Comprehensive Tutorial
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AL HVAC Contractor Comprehensive Tutorial
Lined duct inside clear 18X12. How many cfm are
being handled if the velocity is 1500 FPM?
1850
2000
1200
1725
1
A.
B.
C.
D.
CORRECT: B Duct Calculator
A duct is carrying 1000 CFM. The friction loss per 100' of duct is .11". What is the duct size?
18 x 12
20 x 10
20 x 12
20 x 8
2
A.
B.
C.
D.
CORRECT: D Duct Calculator
In a duct which measures 18 x 12 inside, the velocity is 1500 FPM. What is the CFM being handled by the
duct?
2100 CFM
2355 CFM
2450 CFM
225 CFM
3
A.
B.
C.
D.
CORRECT: A Duct Calculator
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When any two of the following items are known, the
other two items can be determined using the Trane Ductulator:
1. Friction loss in inches of W.C. per 100' of duct
2. Desired velocity in round duct3. Round duct diameter
4. Dimensions for various rectangular duct
True
False
4
A.
B.
C.
D.
CORRECT: A Duct Calculator
With the friction per 100' of duct known, match this
friction, found on the inner blue band, to coinside with
the required ___ on the outer blue band. The velocity
of this system can then be established.
CFM
FPM
Friction loss
rectangular duct size
5
A.
B.
C.
D.
CORRECT: A Duct Calculator
Assume a required air volume of 5000 CFM, and, a
friction loss of .1" W.C. per 100' of duct. Which of
the following is true?
velocity is 1420 FPM
round duct diameter is 25"
rectangular duct dimension is 18" X 29"
all of these
6
A.
B.
C.
D.
CORRECT: A Duct Calculator
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According to the Trane Ductulator, the maximum
recommended velocity in a branch line duct in a theater should not exceed:
1250 FPM
1275 FPM
1300 FPM
1325 FPM
7
A.
B.
C.
D.
CORRECT: C Duct Calculator
The least duct size allowed by the Trane Ductulator is:
2"
3"
4"
3" X 3"
8
A.
B.
C.
D.
CORRECT: B Duct calculator
Given: An industrial branch duct riser carrying 25, 000 CFM.
Assuming the maximum velocity recommended by the
Trane Ductulator, what is the size of the rectangular duct with the limitation of 40" on one side of the
rectangular duct.
40 X 40
40 X 52
50 " round
40 X 60
9
A.
B.
C.
D.
CORRECT: D Ductulator
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When connecting fibrous glass duct board to sheet
metal, washers shall be __ inch think minimum with turned edges to prevent their cutting into the duct
board or the facing.
0.028
0.28
0.016
0.16
10
A.
B.
C.
D.
CORRECT: A Fibrous Glass Duct Construction
Standard 3.30
Deflection of the duct board relative to a flat position of the board is limited to __ of the span.
1/100
1/10
1/50
1/32
11
A.
B.
C.
D.
CORRECT: A Fibrous Glass Duct Construction Standard 1.1
The minimum width of pressure sensitive tape for 1 inch duct board is __ inch/es.
1
1 1/2
2
2 1/2
12
A.
B.
C.
D.
CORRECT: D Fibrous Glass Duct Construction Standard 2.02
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__ fabrication is accurate, repeatable, and fast.
Machine
Hand
13
A.
B.
C.
D.
CORRECT: A Fibrous Glass Duct Construction
Standard 2.10
__ are the three methods for setting up cutting tools in
the grooving machine.
Forward, reverse and neutral
Neutral, standard and reverse
Preferred, forward and reverse
Preferred, reverse and standard
14
A.
B.
C.
D.
CORRECT: D Fibrous Glass Duct Construction Standard 2.10
The principle of MDC is based on the use of __ inch nominal duct module for straight duct runs and
fittings of most types.
36
42
48
32
15
A.
B.
C.
D.
CORRECT: C Fibrous Glass Duct Construction Standard 2.2
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The MDC principle __.
Minimizes the number of circumferential
joints
Simplifies fabrication of fittings
Improves the quality of workmanship
All of the above
16
A.
B.
C.
D.
CORRECT: D Fibrous Glass Duct Construction
Standard 2.2
___ tools are normally required to fabricate straight section of fibrous glass duct board.
Machine grooving
Hand grooving
17
A.
B.
C.
D.
CORRECT: B Fibrous Glass Duct Construction Standard 2.-5
When fabricating fittings from modules or flat board, use #__ plated sheet metal screws, board thickness +
1/4 inch with 2 1/2 inch square or 3 inch round
galvanized steel washers, 0.028 inch thick, volcano
type, with turned edges facing away from duct board, 12 inch nominal centers.
8
10
12
14
18
A.
B.
C.
D.
CORRECT: B Fibrous Glass Duct Construction Standard 3.1
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All mechanical connections of fibrous glass duct to
sheet metal equipment must be __ inches maximum on center.
14
16
12
10
19
A.
B.
C.
D.
CORRECT: C Fibrous Glass Duct Construction Standard 3.30
__ sided fibrous glass duct is approximately round din cross section and is an acceptable substitute for rigid
round duct.
6
8
10
12
20
A.
B.
C.
D.
CORRECT: C Fibrous Glass Duct Construction
Standard 3.31
Tape tabs, when staple flaps are not present, are used at seams and joints. Such tabs, made from 8 inch
minimum lengths of closure tape, are equally spaced
on either side of joints on __ inch maximum centers, with at least one tape tab per side.
14
15
16
12
21
A.
B.
C.
D.
CORRECT: D Fibrous Glass Duct Construction Standard 4.2
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You must use __ inch minimum wide tape for 1 inch
duct board when applying pressure sensitive aluminum foil tape closures.
1
1 1/2
2 1/2
2
22
A.
B.
C.
D.
CORRECT: C Fibrous Glass Duct Construction Standard 4.3
For 2 inch duct board, you must use __ inch wide, minimum, when applying pressure sensitive aluminum
foil tape closures.
3
2 1/2
2
1 1/2
23
A.
B.
C.
D.
CORRECT: A Fibrous Glass Duct Construction
Standard 4.3
Referring to the insulated collar method of flexible duct connections to duct board, for an R-value of 4.2,
you would need to cut a ring from a 1 inch piece of
duct board whose inside diameter is the same as that of the sheet metal collar plus __ inch/es.
1
2
3
4
24
A.
B.
C.
D.
CORRECT: B Fibrous Glass Duct Construction Standard 4.7
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For reinforcement purposes, use #10 plated sheet
metal screws, board thickness plus __ inch thread length.
1/8
1/4
3/8
1/2
25
A.
B.
C.
D.
CORRECT: B Fibrous Glass Duct Construction Standard 5.1
The number of tie rods required for an L angle length of 20 inches is __.
2
3
4
5
26
A.
B.
C.
D.
CORRECT: A Fibrous Glass Duct Construction Standard 5.15
You may use __ reinforcement method for fibrous glass duct system straight sections and fittings.
Tie rod
Channel
Both A and B
Neither A nor B
27
A.
B.
C.
D.
CORRECT: C Fibrous Glass Duct Construction Standard 5.2
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A tie rod termination method is __.
Fasloop
Pop rivet
Locking cap
All of the above
28
A.
B.
C.
D.
CORRECT: D Fibrous Glass Duct Construction
Standard 5.7
The __ is not be used on sloped panels of fittings.
Fasloop
Pop Rivet
Locking Cap
None of the above
29
A.
B.
C.
D.
CORRECT: C Fibrous Glass Duct Construction
Standard 5.7
You are permitted to reuse locking caps.
True
False
30
A.
B.
C.
D.
CORRECT: B Fibrous Glass Duct Construction
Standard 5.7
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Channels suspended trapeze style using __ gauge
minimum hanger wire are the preferred methods of support.
16
18
12
10
31
A.
B.
C.
D.
CORRECT: C Fibrous Glass Duct Construction Standard 6.2
Straps or saddles in contact with hanging 10 sided and preformed round ducts shall be minimum __ inch.
1
3/4
7/8
1 1/2
32
A.
B.
C.
D.
CORRECT: D Fibrous Glass Duct Construction Standard 6.8
The maximum permissible sag in hanging and supporting flexible duct is __ inch per foot.
1/4
3/8
1/2
3/4
33
A.
B.
C.
D.
CORRECT: C Fibrous Glass Duct Construction Standard 6.9
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Vertically installed flexible duct must be stabilized by
support straps located at __ feet on centers.
3
4
5
6
34
A.
B.
C.
D.
CORRECT: D Fibrous Glass Duct Construction Standard 6.9
If damage extends into the insulation and to within __ inches of edge, cut out and repair the entire width of
the damaged panel.
3
5
6
8
35
A.
B.
C.
D.
CORRECT: C Fibrous Glass Duct Construction Standard 8.3
Figure 2-4A shows that the __ is considered the industry standard for machine grooving.
Shiplap
Modified shiplap
V-Groove
Modified V-Groove
36
A.
B.
C.
D.
CORRECT: B Fibrous Glass Duct Construction Standard Figure 2-4A
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Figure 2-5 shows ___.
4 ways to make a duct section
Modified shiplap fabrication method
V-groove fabrication method
Shiplap fabrication method
37
A.
B.
C.
D.
CORRECT: A Fibrous Glass Duct Construction
Standard Figure 2-5
According to Figure 3-28A, sheet metal tap
connection requires use of bearing plate inside duct. If the duct span is a span of between 31 - 54 inches, the
sheet metal gauge must be __.
26
24
22
20
38
A.
B.
C.
D.
CORRECT: C Fibrous Glass Duct Construction
Standard Figure 3-28A
Figure 3-2C shows __.
90 degree elbow with rail mounted metal turning vanes from module
90 degree elbow with turning vanes from flat grooved duct board
Three piece 90 degree elbow from duct board
module
Elbows of less than 90 degrees from duct
board module
39
A.
B.
C.
D.
CORRECT: A Fibrous Glass Duct Construction
Standard Figure 3-2C
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Figure 3-6C shows __.
Tee from flat duct board with fibrous glass
turning vanes
Tee from duct board module with rail
mounted metal turning vanes
Both A and B
Neither A nor B
40
A.
B.
C.
D.
CORRECT: B Fibrous Glass Duct Construction Standard Figure 3-6C
Figure 6-3B shows the use of __ inch wide hanger channels for ducts of less than 48 inch width x 24 inch
height.
3
2
2 1/2
3 1/2
41
A.
B.
C.
D.
CORRECT: B Fibrous Glass Duct Construction
Standard Figure 6-3B
The International Gas Code does not apply to ___.
Portable LP gas equipment
Brooders and dehydrators
Welding systems
All of the above
42
A.
B.
C.
D.
CORRECT: D IGC 2003 101.2.4 (1)(2)(4)
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The purpose of the International Gas Code is to
provide ___ protection standards to safeguard life, limb, health and public property.
Maximum
Minimum
Complete
All inclusive
43
A.
B.
C.
D.
CORRECT: B IGC 2003 101.4
Generally, the International Gas Code shall not require the removal, alteration or abandonment of, nor
prevent the continued utilization and maintenance of
__ lawfully in existence at the time of the adoption of
this Code.
Historic installations
New installations
Installations outside the jurisdiction
Existing installations
44
A.
B.
C.
D.
CORRECT: D IGC 2003 102.2
Additions, alterations, repairs and renovations to existing systems shall conform to __.
The Code in existence at the time of
installation
The 2000 International Gas Code
The Code as adopted currently
None of the these
45
A.
B.
C.
D.
CORRECT: C IGC 2003 102.4
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Historic buildings, judged safe, need not have repair
work conform to the current Code.
True
False
46
A.
B.
C.
D.
CORRECT: A IGC 2003 102.6
New work in moved buildings within the jurisdiction of this Code need not comply with this Code.
True
False
47
A.
B.
C.
D.
CORRECT: B IGC 2003 102.7
The Code official ___.
Shall be elected by the people
May be removed from office for cause
May be sued in his private capacity
May have charges brought before him by the
home owner
48
A.
B.
C.
D.
CORRECT: B IGC 2003 103.2
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The Code official ___.
May be sued in his private capacity while
acting n accordance within the jurisdiction of the Code
May not be sued while in the employ of the jurisdiction, and acting outside his capacity
as a Code official
Both A and B
Neither A nor B
49
A.
B.
C.
D.
CORRECT: D IGC 2003 103.4
A Code official, while acting and discharging his duties as Code official who is sued must post bond and
pay for legal defense.
True
False
50
A.
B.
C.
D.
CORRECT: B IGC 2003 103.4
It is the duty of the Code official to ___.
Keep official records of the project
Issue work permits
Make all required inspections
All of the above
51
A.
B.
C.
D.
CORRECT: D IGC 2003 104.4, 104.3, 104.8
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Materials, equipment and devices may be reused under
which of the following conditions?
If such apparatus is presently in working condition
If they have been tested and approved
Materials, equipment and devices may not be reused in fuel gas piping systems
Only after reconditioning
52
A.
B.
C.
D.
CORRECT: B IGC 2003 105.4
Construction documents, engineering data and diagrams shall be submitted in sets of __ or more with
each application for a permit.
2
4
6
8
53
A.
B.
C.
D.
CORRECT: A IGC 2003 106.3.1
It is the duty of the __ to review an application, construction documents and other data for the purpose
of issuing an permit.
Engineer
Contractor
Owner
Code official
54
A.
B.
C.
D.
CORRECT: D IGC 2003 106.4
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A false statement or misrepresentation of material fact
on an application for permit could be cause for __.
Suspension of permit
Revocation of permit
Both A and B
Loss of license for one year
55
A.
B.
C.
D.
CORRECT: C IGC 2003 106.4.5
Work which proceeds before a permit is issued ___.
Is considered a misdemeanor
Qualifies for a civil fine of $5,000
Subjects the contractor to double permit fees
All of the above
56
A.
B.
C.
D.
CORRECT: C IGC 2003 106.5.1
The Code official shall not authorize the refunding of
any fee paid.
True
False
57
A.
B.
C.
D.
CORRECT: B IGC 2003 106.5.3
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Upon notice from the Code official that work is being
done contrary to the provisions of this code or in a dangerous or unsafe manner, ____.
The Code official shall cordon off the area so
that work stops immediately
The Code official shall give the contractor
written notice to cease work in 24 hours
The Code official shall, along with the sheriff and or local law enforcement officers,
immediately shut down the entire project and
escort the work force off the site
The work shall cease immediately
58
A.
B.
C.
D.
CORRECT: D IGC 2003 108.5
A person shall have the right to appeal a decision of
the Code official to the Board of Appeals.
True
False
59
A.
B.
C.
D.
CORRECT: A IGC 2003 109.1
A Board of Appeals shall consist of __ members,
appointed by the Chief Appointing Authority.
2
3
4
5
60
A.
B.
C.
D.
CORRECT: D IGC 2003 109.2
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Each newly appointed successor member of the Board
of Appeals shall serve for a term of __ years.
2
3
4
5
61
A.
B.
C.
D.
CORRECT: D IGC 2003 109.2
A low heat appliance produces flue gasses at temperatures of ____ degrees F or Less.
500
750
1000
1250
62
A.
B.
C.
D.
CORRECT: C IGC 2003 201 A
According to the IFGC, a room large in comparison with the size of equipment is a room having a volume
equal to at least __ times the total volume of a furnace
or air conditioning appliance or at least 16 times to
total volume of a boiler.
12
10
8
6
63
A.
B.
C.
D.
CORRECT: A IGC 2003 202
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A __ is a furnace designed with airflow discharge
vertically near the bottom of the furnace.
Forced air furnace
Downflow furnace
Gravity type furnace
Enclosed furnace
64
A.
B.
C.
D.
CORRECT: B IGC 2003 202
The treatment of indoor and outdoor air so as to control temperature, humidity and cleanliness, when
delivered to a space is __.
Exhaust air
Warm air
Return air
Air conditioning
65
A.
B.
C.
D.
CORRECT: D IGC 2003 202 A
___ by the Code, official or other authority having jurisdiction, is which of the following?
Approved
Approval agency
Approval listing
Approval device
66
A.
B.
C.
D.
CORRECT: A IGC 2003 202 A
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A broiler is a device which cooks food by which of the
following?
Convection
Convention
Radiation
Induction
67
A.
B.
C.
D.
CORRECT: C IGC 2003 202 B
BTU is the abbreviation for __.
Baking Transition Unit
Better Than Ultra
Below the U-Factor
British Thermal Unit
68
A.
B.
C.
D.
CORRECT: D IGC 2003 202 B
One BTU is the quantity of energy required to raise
the temperature of one pound of water 1 degree.
True
False
69
A.
B.
C.
D.
CORRECT: B IGC 2003 202 B
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Forced-draft burner depends on a draft forced by a fan
that is an integral part of the appliance and is located ___ of the burner.
Outside
Inside
Upstream
Downstream
70
A.
B.
C.
D.
CORRECT: C IGC 2003 202 B
An induced-draft burner depends on draft induced by a fan that is an integral part of the appliance and is
located __ of the burner.
Outside
Inside
Upstream
Downstream
71
A.
B.
C.
D.
CORRECT: D IGC 2003 202 B
__ is the rapid oxidation of a fuel accompanied by the production of heat or heat and light.
Burning
Combustion
A flame
Water production
72
A.
B.
C.
D.
CORRECT: B IGC 2003 202 C
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Concealed piping is not considered to be located
behind a removable panel.
True
False
73
A.
B.
C.
D.
CORRECT: A IGC 2003 202 C
The pipe that connects an approved appliance as a chimney, flue or vent is known as a ___.
Connector
Flue
Vent
Control
74
A.
B.
C.
D.
CORRECT: A IGC 2003 202 C
The pressure difference created by a vent or chimney because of its height, and the temperature difference
between the flue gasses and the atmosphere is known
as __.
Draft
Forced draft
Induced draft
Natural draft
75
A.
B.
C.
D.
CORRECT: D IGC 2003 202 D
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A __ is a non-adjustable device built into a gas
utilization device.
Back draft damper
Volume Damper
Draft hood
Hand damper
76
A.
B.
C.
D.
CORRECT: C IGC 2003 202 D
Draft hoods __.
Provide for ready escape of flue gasses into the chimney
Prevent back draft from entering into the
appliance
Neutralize the effect of stack action upon the
appliance
All of the above
77
A.
B.
C.
D.
CORRECT: D IGC 2003 202 D
Fuel gases include all of the following except __.
Natural gas
Oxyacetylene
Liquefied petroleum gas
Hydrogen gas
78
A.
B.
C.
D.
CORRECT: B IGC 2003 202 F
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A furnace designed for airflow discharge downward at
or near the bottom is a __.
Gravity flow furnace
Down flow furnace
Counter flow furnace
Unit heater
79
A.
B.
C.
D.
CORRECT: B IGC 2003 202 F
A joint made by bolting together a pair of flanged ends is a __ joint.
Mechanical
Flared
Flanged
Welded
80
A.
B.
C.
D.
CORRECT: C IGC 2003 202 J
A __ is a device responsive to changes to pressure, temperature and responsible for shutting off or
throttling back the supply of gas to the appliance.
Limit control
Thermostat
Sail switch
Pressure control
81
A.
B.
C.
D.
CORRECT: A IGC 2003 202 L
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Space within a dwelling unit for the purpose of
sleeping and eating is a living space.
True
False
82
A.
B.
C.
D.
CORRECT: A IGC 2003 202 L
"Stay Warm Heating" has a project to install a total comfort HVAC unit in the new Rialto Theater. Jimmy
Lee, Stay Warm's project manager, must determine if
the new Bryant unit is large or small in comparison to
the room in which it is to be installed. Field measurements indicate the room is 12 feet wide by 18
feet long. The ceiling height is 10 feet. The Bryant
unit measure 5'6" long by 3'6" high. Is this room large
or small in comparison to the Bryant unit?
Large
Small
83
A.
B.
C.
D.
CORRECT: A IGC 2003 202 R
An appliance which required 36 inches of clearance to
combustibles, has 24 gauge sheet metal with ventilated
airspace installed to protect the combustibles, the allowed clearance is now __.
9 inches
18 inches
24 inches
30 inches
84
A.
B.
C.
D.
CORRECT: B IGC 2003 308.2
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Low pressure boilers installed in rooms that are small
in comparison to the size of the equipment may use Table 308.2 for clearance reduction.
True
False
85
A.
B.
C.
D.
CORRECT: B IGC 2003 308.2 Table
Air conditioning equipment installed in rooms that are large in comparison with the size of the equipment
shall be installed with which of the following
clearances?
2 inches
4 inches or greater
In accordance with the terms of their listing
In accordance with Table 308.2 of this Code
86
A.
B.
C.
D.
CORRECT: C IGC 2003 308.3.1
Furnace plenum clearance to plaster on metal lath __.
Shall be 2 inches
Shall be measured to the surface of the plaster
Shall be measured to the inside face of the
metal lath
May be reduced to 2 inches
87
A.
B.
C.
D.
CORRECT: B IGC 2003 308.3.4
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Gas piping may be used as a grounding electrode
where the engineer and the Code official have given approval.
True
False
88
A.
B.
C.
D.
CORRECT: B IGC 2003 309.1
Electrical connections between equipment and the building wiring, including the grounding of the
equipment, shall conform to the National Electrical
Code.
True
False
89
A.
B.
C.
D.
CORRECT: A IGC 2003 309.2
Each above-ground portion of a gas piping system that is likely to ___ shall be electrically continuous and
bonded to a ground-fault path.
Corrode
Rust
Become energized
Become deenergized
90
A.
B.
C.
D.
CORRECT: C IGC 2003 309.2
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Gas piping bonding shall be connected to a circuit
other than that supplying the gas equipment.
True
False
91
A.
B.
C.
D.
CORRECT: B IGC 2003 310.1
Exposed gas piping systems shall be identified by which of the following colors?
Red
Yellow
Blue
Green
92
A.
B.
C.
D.
CORRECT: B IGC 2003 401.5
When sizing a gas piping system which name plate BTU input rating is unknown, a hydronic boiler for a
single family unit would have an approximate rating
___ BTU.
60,000
100,000
110,000
120,000
93
A.
B.
C.
D.
CORRECT: B IGC 2003 402.2 Table
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According to Table 402.2, an instantaneous water
heater with a capacity of four gallons per minute has a BTU/h input of approximately ___ BTU/h.
142,800
285,000
428,400
35,000
94
A.
B.
C.
D.
CORRECT: B IGC 2003 402.2 Table
According to the International Gas Code, Table 402.3, a fuel gas piping system, with a developed length of
145 feet, carrying 1245 cubic feet of fuel gas, would
require a schedule 40 pipe size of:
1 1/4"
1 1/2"
2"
2 1/2"
95
A.
B.
C.
D.
CORRECT: D IGC 2003 402.3
Table 402.4(1) is used to size __. I. schedule 40 metalic pipe
II. pressure drop of 0.3 inches water column
I only
II only
Both I and II
Neither I nor II
96
A.
B.
C.
D.
CORRECT: C IGC 2003 402.4(1) Table
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A segment of schedule 40 metallic pipe is carrying
670 cubic feet of gas per hour. Assuming a pressure drop of .3 inches water column and a maximum
branch length of 50 feet, what would be the minimum
pipe size required?
1 inch
1 1/4 inch
1 1/2 inch
2 inch
97
A.
B.
C.
D.
CORRECT: C IGC 2003 402.4(1) Table
Given: Natural gas piping system; pressure drop of .5 inches water column; type cast tubing; tube size is 23;
maximum capacity of 38 cubic feet of gas per hour.
What is the maximum branch length allowed?
150
200
250
300
98
A.
B.
C.
D.
CORRECT: B IGC 2003 402.4(14) Table
Given: Type K copper pipe; pressure drop of .3 inches
water column; maximum branch length of 81 feet; 387
cubic feet per hour demand. What is the minimum size
pipe required?
1 inch
1 1/4 inch
1 1/2 inch
2 inch
99
A.
B.
C.
D.
CORRECT: C IGC 2003 402.4(7) Table
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At a maximum branch length of 153 feet, what is the
maximum cubic feet of gas that can be carried by a 5/8 inch type L copper semi-rigid tube?
50
45
41
39
100
A.
B.
C.
D.
CORRECT: C IGC 2003 402.4(8) Table
The operating pressure for undiluted LP gas systems shall not exceed ___ psig.
8
10
16
20
101
A.
B.
C.
D.
CORRECT: D IGC 2003 402.6.1
Where plastic pipe is used for fuel gas piping systems, the joint shall be designed so that the longitudinal pull-
out resistance of the joint will be at least __.
20 pounds per square inch
Equal to the solvent weld medium
The compression strength of the pipe
The tensile strength of the pipe
102
A.
B.
C.
D.
CORRECT: D IGC 2003 403.11
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Acceptable flanged gasket material include all of the
following except __.
Neoprene
Asbestos
Aluminum "O" rings
Spiral wound metal gaskets
103
A.
B.
C.
D.
CORRECT: A IGC 2003 403.13
Copper and brass tubing shall not be used in fuel gas piping systems where the natural gas contains more
than an average of __ grains of hydrogen sulfide per
100 cubic feet of gas.
.3
.03
3.0
30.0
104
A.
B.
C.
D.
CORRECT: A IGC 2003 403.5.2
According to code, thread compounds shall be resistant to the action of LP gas, fuel gas, and, any
chemical constituents of the gases conducted through
the pipe.
True
False
105
A.
B.
C.
D.
CORRECT: A IGC 2003 403.9.3
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Portions of fuel gas piping systems in concealed
locations shall not include:1. Unions
2. Tubing fittings
3. Right and left couplings4. Brazed joints
5. Bushings
6. Swing joints
7. Compression couplings
All but #1
All but #2
All but #4
All but #6
106
A.
B.
C.
D.
CORRECT: C IGC 2003 404.3, 404.3(1)
Uncoated threaded or socket welded joints shall not be
used __.
True
In contact with soil
In an alkaline atmosphere
False
107
A.
B.
C.
D.
CORRECT: B IGC 2003 404.8.1
Mitered bends in excess of 3 degrees shall not be used
in fuel gas piping systems where the internal pressure
exceeds __.
20 psi
30 psi
40 psi
50 psi
108
A.
B.
C.
D.
CORRECT: D IGC 2003 404.8.1
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A branch length of 45 feet of 2 1/2 inch fuel gas
piping requires purging with an inert gas.
True
False
109
A.
B.
C.
D.
CORRECT: B IGC 2003 406.7.1
Vertical spacing of hangers for fuel gas piping 1 1/4 inch and larger shall be no less than __.
6 feet
8 feet
Every floor
10 feet
110
A.
B.
C.
D.
CORRECT: C IGC 2003 415.1 Table
According to the International Gas Code, Chapter 5 covers all of the following except:
factory built
chimneys
chimney liners
single wall chimneys
111
A.
B.
C.
D.
CORRECT: B IGC 2003 501.1
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Residential and low heat appliance flue lining systems
shall be clay flue lining, a listed chimney lining system, and any other approved materials which will
support temperatures up to ____ degrees F.
1200
1500
1800
2400
112
A.
B.
C.
D.
CORRECT: C IGC 2003 501.12
Category II, III, and IV appliance venting systems shall be sized in accordance with IGC section 504.
True
False
113
A.
B.
C.
D.
CORRECT: B IGC 2003 501.14
must be sized in accordance with manufacturers recommendations
According to the International Gas Code, masonry chimney flues shall be provided with a cleanout
opening having a minimum height of ____ inches.
6
8
10
12
114
A.
B.
C.
D.
CORRECT: A IGC 2003 501.15.3
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According to the International Gas Code, masonry
chimneys equipped with a chimney lining system shall not be required to have clearance between combustible
materials and the exterior surfaces of the masonry
chimney.
True
False
115
A.
B.
C.
D.
CORRECT: B IGC 2003 501.15.4 exception
liner system must be "listed"
According to the International Gas Code, abandoned inlet openings in chimneys and vents shall be closed .
True
False
116
A.
B.
C.
D.
CORRECT: B IGC 2003 501.5
shall be closed by an approved method
According to the International Gas Code, positive pressure venting systems shall be:
I. Taped & sealedII. Designed for a minimum of .25" of positive
pressure
I only
II only
Both I and II
Neither I nor II
117
A.
B.
C.
D.
CORRECT: D IGC 2003 501.7
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According to the International Gas Code, when
connecting an appliance to chimney flues serving fireplaces, a ____ shall be provided below the point of
connection to prevent entry of room air into the flue.
cleanout
combustible seal
noncombustible seal
damper
118
A.
B.
C.
D.
CORRECT: C IGC 2003 501.7
An appliance shall not be connected to a flue serving a factory-build fireplace.
True
False
119
A.
B.
C.
D.
CORRECT: B IGC 2003 501.7.2
If the appliance is specifically listed for such installation, then its OK!
According to the International Gas Code, when connecting a fuel gas appliance to a masonry fireplace
flue:
the connector shall extend to the fireplace flue
the connector shall extend to the fireplace
chamber
the connector shall extend to a point at least
4' vertical from the fireplace shelf
the ICG prohibits this arrangement
120
A.
B.
C.
D.
CORRECT: A IGC 2003 501.7.3
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According to the International Gas Code, laboratory
burners must be vented.
True
False
121
A.
B.
C.
D.
CORRECT: B IGC 2003 501.8
According to the International Gas Code, Gas refrigerators need not be vented.
True
False
122
A.
B.
C.
D.
CORRECT: A IGC 2003 501.8
According to the International Gas Code, Type II clothes dryers need not be vented.
True
False
123
A.
B.
C.
D.
CORRECT: B IGC 2003 501.8
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According to the International Gas Code, room heaters
listed for unvented use need not be vented as long as there is an openable window in the room.
True
False
124
A.
B.
C.
D.
CORRECT: B IGC 2003 501.8
According to the International Gas Code, paragraph 501.8, a room containing multiples of items 1-11,
where the sum of the input ratings is greater than ____
BTU per cubic foot of room volume, an approved
venting system shall be provided.
20
40
100
200
125
A.
B.
C.
D.
CORRECT: A IGC 2003 501.8
According to the International Gas Code, connectors shall connect to a masonry chimney flue at a point not
less than ____ inches above the lowest portion of the
interior of the chimney flue.
6
12
18
24
126
A.
B.
C.
D.
CORRECT: B IGC 2003 501.9
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According to the International Gas Code, where vents
pass through insulated assemblies, an insulation shield constructed of not less than ____ gauge sheet metal
shall be used to provide clearance between the vent
and the insulation.
20
22
24
26
127
A.
B.
C.
D.
CORRECT: D IGC 2003 502.4
The entire length of a chimney vent connector shall have ___ for, inspection, cleaning and repair.
Confinement
Access doors
Access
Ready access
128
A.
B.
C.
D.
CORRECT: D IGC 2003 503.10.12
A gas utilization appliance shall not be connected to a chimney flue serving ___, disregarding exceptions.
Any other gas utilization appliance
Any appliance which has a draft hood
A fireplace
A space heater
129
A.
B.
C.
D.
CORRECT: C IGC 2003 503.10.13
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A vent connector shall not pass through ___.
A ceiling
A floor
Fire resistant rated wall
All of the above
130
A.
B.
C.
D.
CORRECT: D IGC 2003 503.10.14
A single wall metal connector shall not pass through
any __.
Interior wall
Exterior wall
Living spaces
All of the above
131
A.
B.
C.
D.
CORRECT: A IGC 2003 503.10.14
According to the IFGC, for residential and low heat
appliances, the thimble shall be not less than __ inches larger in diameter than the vent connector.
12
9
7
6
132
A.
B.
C.
D.
CORRECT: A IGC 2003 503.10.15
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Ventilated metal thimbles designed for Type B metal
vent shall be a minimum of ___ inches in diameter larger than the outside diameter of the metal vent.
2
4
6
8
133
A.
B.
C.
D.
CORRECT: B IGC 2003 503.10.15
Single wall metal pipe located within the exterior walls of a building in locales having a 99% winter
design temperature of __ degrees Fahrenheit or higher
shall be permitted to be used in unconditioned spaces
other than attics and crawl spaces.
-5
Zero
5
10
134
A.
B.
C.
D.
CORRECT: C IGC 2003 503.10.2.2 Exception
The minimum thickness for a galvanized steel vent connector 8" in diameter, shall be no less than ____
inches.
.019
.023
.029
.034
135
A.
B.
C.
D.
CORRECT: B IGC 2003 503.10.2.4 Table
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The minimum thickness for a steel vent connector for
medium heat equipment connector, 8" diameter, shall be no less than ____ inches.
.053
.067
.093
.123
136
A.
B.
C.
D.
CORRECT: A IGC 2003 503.10.2.5
Vent connectors serving Category __ appliances shall not connect to any portion of a mechanical draft
system operating under positive static pressure.
I
II
III
IV
137
A.
B.
C.
D.
CORRECT: A IGC 2003 503.10.4
Joints between sections of connector piping and connections to flue collars and hood outlets shall be
fastened by any of the following methods except __.
Any approved means
Aluminum duct tape
Sheet metal screws
In accordance with manufacturers instructions
138
A.
B.
C.
D.
CORRECT: B IGC 2003 503.10.7
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According to the IFGC, a vent connector shall be
installed without dips or sags and shall slope upward toward the vent or chimney at least __ inch per foot.
1/2
1/8
1/4
3/16
139
A.
B.
C.
D.
CORRECT: C IGC 2003 503.10.8
Without considering exceptions, the maximum horizontal length of a single wall vent connector shall
not exceed __.
100 feet
75 feet
100% of the vertical rise of the vent
75% of the vertical rise of the vent
140
A.
B.
C.
D.
CORRECT: D IGC 2003 503.10.9
According to the IFGC, a draft hood shall be located so its relief opening is not less than __ inches from
any surface except that of the equipment it serves and
the venting system to which the draft hood is
connected.
12
18
9
6
141
A.
B.
C.
D.
CORRECT: D IGC 2003 503.12.7
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Manually operated dampers __ placed in the vent
connector of any appliance.
Shall not be
Are permitted to be
142
A.
B.
C.
D.
CORRECT: A IGC 2003 503.13
According to the International Gas Code, incinerators shall be permitted to be vented by means of a
mechanical draft system of an induced draft design.
True
False
143
A.
B.
C.
D.
CORRECT: B IGC 2003 503.3.3.2
According to the International Gas Code, ventilating hoods shall be permitted to vent____ equipment.
production
commercial
residential
process
144
A.
B.
C.
D.
CORRECT: B IGC 2003 503.3.3.4
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In a mechanical venting system where a ventilating
hood is used, provisions shall be made to prohibit ____ when the ventilation loop's damper is not in the
open position.
ignition
flow of gas to main burner
flow of gas through the solenoid valve
the exhaust fan from operating
145
A.
B.
C.
D.
CORRECT: B IGC 2003 503.3.4
According to the International Gas Code, no portion of a venting shall extend through or into:
an attic
an air duct
an air plenum
B & C are correct
146
A.
B.
C.
D.
CORRECT: D IGC 2003 503.3.5
According to the International Gas Code, table 503.4, a listed, vented wall furnace can utilize ____ for its
flue.
single wall
Type B
Type L
Type BW
147
A.
B.
C.
D.
CORRECT: D IGC 2003 503.4
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According to the International Gas Code, approved
plastic piping is permitted to be used for approved appliances.
True
False
148
A.
B.
C.
D.
CORRECT: A IGC 2003 503.4.1
According to the International Gas Code, masonry chimneys built in accordance with NFPA 211 shall be
built for temperatures up to ____ degrees F.
1500
1800
2400
3000
149
A.
B.
C.
D.
CORRECT: B IGC 2003 503.5.3
According to the International Gas Code, residential chimneys for a low-heat appliance, shall extend ____
feet above the highest point where it passes through a
roof.
2
3
4
5
150
A.
B.
C.
D.
CORRECT: B IGC 2003 503.5.4
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According to the International Gas Code, residential
chimneys for a low-heat appliance, shall extend ____ feet above any portion of a building within a
horizontal distance of 10 feet.
2
3
4
5
151
A.
B.
C.
D.
CORRECT: A IGC 2003 503.5.4
According to the International Gas Code, chimneys for medium-heat equipment shall extend at least ____ feet
higher than any portion of any building within 25 feet.
2
3
10
25
152
A.
B.
C.
D.
CORRECT: C IGC 2003 503.5.4
Using the alternate method #1 of flue sizing in the International Gas Code, the maximum size individual
chimney for an appliance whose draft hood is 3" in
diameter would be ____ inches in diameter.
4
5
6
7
153
A.
B.
C.
D.
CORRECT: D IGC 2003 503.5.5 exception (1)
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Using the alternate method #2 of flue sizing in the
IGC, the common flue size for a 4" and a 5" connected appliance would be a ____ inch diameter pipe.
4
5
6
7
154
A.
B.
C.
D.
CORRECT: C IGC 2003 503.5.5 exception (2)
According to the International Gas Code, an existing chimney which has previously been used for venting
solid-burning fuel shall be ____ prior to placing a new
fuel gas burning appliance into its service.
abandoned
replaced
cleaned
removed
155
A.
B.
C.
D.
CORRECT: C IGC 2003 503.5.6
According to the International Gas Code, fuel gas burning equipment shall be permitted to be connected
to a chimney flue serving a separate appliance
designed to burn solid fuel.
True
False
156
A.
B.
C.
D.
CORRECT: B IGC 2003 503.5.7.1
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According to the International Gas Code, category I
gas utilizing equipment on more than one floor are permitted to be serviced by a common gas vent.
True
False
157
A.
B.
C.
D.
CORRECT: A IGC 2003 503.6.10
According to the International Gas Code, category I gas utilizing equipment on more than one floor which
is to be served by a common flue vent require the
following:
I. All equipment shall be located in rooms separated
from habitable living
II. Equipment rooms shall have exteriorly furnished combustion, ventilation and dilution air.
I only
II only
Both I and II
Neither I nor II
158
A.
B.
C.
D.
CORRECT: C IGC 2003 503.6.10.1
According to the International Gas Code, when sizing
connectors in multi-story gas venting systems, the
available height (H) is the vertical distance between:
I. The level of the highest draft hood outlet
II. The centerline of the next highest interconnection
tee
Either I or II
Both I or II
Neither I nor II
159
A.
B.
C.
D.
CORRECT: B IGC 2003 503.6.10.2
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According to the International Gas Code, when sizing
connectors in multi-story venting systems, the size of a connector segment is determined from:
it's draft hood outlet
draft hood inlet
Btu input
Btu output
160
A.
B.
C.
D.
CORRECT: C IGC 2003 503.6.10.2(2)
According to the International Gas Code, when sizing the common vertical vent in a multi-story venting
system, the size of the common vent is based upon:
I. Total connected Btu input of equipmentII. Total available height of common vertical vent
I only
II only
Both I and II
Neither I nor II
161
A.
B.
C.
D.
CORRECT: C IGC 2003 503.6.10.2(3)
According to the International Gas Code, a fuel gas
vent shall pass through the roof using all of the
following except:
roof flashing
pitch pocket
roof jack
roof thimble
162
A.
B.
C.
D.
CORRECT: B IGC 2003 503.6.3
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Generally, Type L vents shall extend vertically with
off sets not exceeding ____ degrees.
30
45
60
90
163
A.
B.
C.
D.
CORRECT: B IGC 2003 503.6.4
According to the International Gas Code, Type B vents shall be permitted to have one offset of not more
than ____ degrees.
30
45
60
90
164
A.
B.
C.
D.
CORRECT: C IGC 2003 503.6.4
According to the International Gas Code, the total horizontal length of a vent, including the length of its
connector, serving a gravity vented appliance, shall
not exceed ____% of its vertical height.
30
45
60
75
165
A.
B.
C.
D.
CORRECT: D IGC 2003 503.6.4
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According to the International Gas Code, a vent for a
fuel gas appliance shall terminate above the roof surface with:
room in the thimble for combustion air
a listed cap
a listed roof assembly
either B or C
166
A.
B.
C.
D.
CORRECT: D IGC 2003 503.6.6
According to the International Gas Code, gas vents 12 inches and smaller shall terminate at least ____ feet
from a vertical wall.
2
6
8
10
167
A.
B.
C.
D.
CORRECT: B IGC 2003 503.6.6
A type B gas vent shall terminate ____ feet in vertical height above the appliance draft hood.
2
3
4
5
168
A.
B.
C.
D.
CORRECT: D IGC 2003 503.6.7
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A type B-W gas vent shall terminate ____ feet in
vertical height above the bottom of a wall heater.
5
7
10
12
169
A.
B.
C.
D.
CORRECT: D IGC 2003 503.6.7
A gas vent exiting through a wall shall not terminate:
on the wall
next to a wall
under an eave
all of the above
170
A.
B.
C.
D.
CORRECT: D IGC 2003 503.6.8
According to the International Gas Code, single wall
metal pipe for use in multi-story gas venting systems shall be made of ____ inch thick galvanized sheet
steel, or other approved materials.
.0123
.0231
.0304
.0434
171
A.
B.
C.
D.
CORRECT: C IGC 2003 503.7.1
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According to the International Gas Code, uninsulated
single-wall metal pipe shall not be used outdoors in cold climates for fuel gas burning equipment.
True
False
172
A.
B.
C.
D.
CORRECT: A IGC 2003 503.7.2
According to the International Gas Code, single-wall metal pipe shall only be used for runs directly from the
space in which the ____ is located.
I. appliance
II. draft hood
I only
II only
Both I and II
Neither I nor II
173
A.
B.
C.
D.
CORRECT: C IGC 2003 503.7.4
According to the International Gas Code, single-wall metal pipe penetrations through a roof, a non-
ventilating shall be used which shall extend ____
inches above the roof and ____ inches below the roof.
18 ; 18
18 ; 6
6 ; 18
6 ; 6
174
A.
B.
C.
D.
CORRECT: B IGC 2003 503.7.5
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According to the International Gas Code, single-wall
metal pipe shall not originate in any of the following except:
unoccupied attic
unoccupied mechanical equipment room
concealed space
chase
175
A.
B.
C.
D.
CORRECT: B IGC 2003 503.7.6
According to the International Gas Code, Table 503.7.7, the clearance of listed equipment with a draft
hood, and listed for use with Type B gas vents, from
combustible material to single-wall metal pipe shall be
no less than ____ inches.
3
6
9
not permitted
176
A.
B.
C.
D.
CORRECT: B IGC 2003 503.7.7 Table
According to the International Gas Code, Table 503.7.7, the clearance form Type B vent to
combustible material for a gas fired toilet shall be no
less than ____ inches.
3
6
9
not permitted
177
A.
B.
C.
D.
CORRECT: D IGC 2003 503.7.7 Table
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According to the International Gas Code, the
minimum dimension for a single-wall pipe vent shall be no less than:
2"
3"
4"
5"
178
A.
B.
C.
D.
CORRECT: A IGC 2003 503.7.9
A mechanical draft venting system shall terminate at least ____ feet above any building inlet within 10 feet.
2
3
4
5
179
A.
B.
C.
D.
CORRECT: B IGC 2003 503.8(1)
A mechanical draft venting system shall terminate at least ____ feet above grade.
1
2
3
4
180
A.
B.
C.
D.
CORRECT: A IGC 2003 503.8(2)
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The minimum input rating of a Category I fan-assisted
appliance connected to a vent or connector is the definition for ___.
Fan Minimum
Fan Maximum
National Minimum
National Maximum
181
A.
B.
C.
D.
CORRECT: A IGC 2003 504.1
The maximum input rating of a Category I fan-assisted appliance connected to a vent or connector is
the definition for __.
Fan minimum
Fan maximum
National minimum
National maximum
182
A.
B.
C.
D.
CORRECT: B IGC 2003 504.1
The maximum input rating of a Category I draft hood appliance connected to a vent or connector is the
definition for __.
Fan min
Fan max
Nat min
Nat max
183
A.
B.
C.
D.
CORRECT: D IGC 2003 504.1
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The maximum combined appliance input rating of one
or more Category I fan-assisted appliances and one or more draft hood equipped appliances attached to a
common vent is the definition for __.
Fan max
Fan min
FAN + FAN
FAN + NAT
184
A.
B.
C.
D.
CORRECT: D IGC 2003 504.1
Given:1. Category I appliance with a draft hood, Type B vent
2. Name plate input rating is 96,000 BTU/h
3. Location is 5 feet horizontally from flue
4. Vertical height draft hood to vent outlet is 15 feetWhat is the minimum size flue?
4 inches
5 inches
6 inches
8 inches
185
A.
B.
C.
D.
CORRECT: B IGC 2003 504.2 (1) Table
Use the following information to select the minimum
size flue:
1. Category I appliance, fan assisted, single appliance2. Name plate input rating of 575,000
3. Location is 15 feet horizontally from flue
4. Vertical rise of flue is 15 feet
5. Vent type is "B"
8 inches
10 inches
12 inches
14 inches
186
A.
B.
C.
D.
CORRECT: B IGC 2003 504.2 (1) Table
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Use the following information to determine the
minimum flue size:1. Single, Category I appliance, 35,000 BTU/h
2. Single wall appliance vent connector
3. Type B vent4. Lateral distance is 12 feet
5. Flue height is 15 feet
3 inches
4 inches
5 inches
Not applicable
187
A.
B.
C.
D.
CORRECT: D IGC 2003 504.2 (1) Table
The maximum horizontal length of a 10 inch vent
connector shall not be greater than __ feet.
10
12.5
15
17.5
188
A.
B.
C.
D.
CORRECT: C IGC 2003 504.2 (1) Table
A single appliance is to be vented with a type B vent.
Its label indicates a BTUh input rating of 120,000.
The venting system will require 3 elbows. If the "Nat
MAX" is 187, what is the rating with the elbows?
149.6
177.6
158.95
168.3
189
A.
B.
C.
D.
CORRECT: D IGC 2003 504.2.3
10 % reduction in the nat/Max rating for one additional elbow over the two allowed. 187 X .9 = 168.3
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According to the IFGC, a multistory common vent
may be reduced by __% in size above the offset.
3
5
4
None of these
190
A.
B.
C.
D.
CORRECT: D IGC 2003 504.3.16
It shall NOT be reduced at all.
Vent connectors for draft hood equipped appliances:I. May
II. Shall not
be smaller than the draft hood outlet diameter.
I
II
Either
Neither
191
A.
B.
C.
D.
CORRECT: B IGC 2003 504.3.19
According to the IFGC, the maximum vent connector length, horizontally, for a connector diameter of 24
inches maximum, shall be __ feet.
36
33
27
21
192
A.
B.
C.
D.
CORRECT: A IGC 2003 504.3.2
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Where vent connectors are combined, prior to entering
the vertical portion of the common vent to form a common vent manifold, the size of the common vent
manifold and the common vent shall be determined by
applying a __ reduction to the common vent capacity part of the common vent tables.
10%
8%
5%
2%
193
A.
B.
C.
D.
CORRECT: A IGC 2003 504.3.2
Commingling a combination of pipe sizes, double wall and single wall metal pipe shall not be permitted by
this Code.
True
False
194
A.
B.
C.
D.
CORRECT: B IGC 2003 504.3.21
The minimum distance from the lowest part of a floor
furnace to the surrounding grade shall not be less than
__ inches.
4
5
6
8
195
A.
B.
C.
D.
CORRECT: C IGC 2003 504.3.22
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At the point where a tee or a wye fitting connects to a
common vent ___.
This arrangement is not permitted
The size of the tee or wye shall not be
diminished
This arrangement is only permitted when common vent sizes are 10 inches or larger
The opening size of the fitting shall be of a
size equal to the common vent
196
A.
B.
C.
D.
CORRECT: D IGC 2003 504.3.4
According to the IFGC, for each elbow up to and including 445 degrees in the common vent, the
maximum common vent capacity listed in the venting
tables shall be reduced by __%.
5
3
7
10
197
A.
B.
C.
D.
CORRECT: A IGC 2003 504.3.6
When using corrugated metallic chimney liners, the
table capacities shall be reduced by __.
15%
20%
25%
30%
198
A.
B.
C.
D.
CORRECT: B IGC 2003 504.3.9
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According to the IFGC, a distance of at least __ inches
from 2 adjoining sides of a floor furnace register to walls shall be provided.
12
18
24
36
199
A.
B.
C.
D.
CORRECT: B IGC 2003 609.2
According to the IFGC, floor furnaces shall not be installed in concrete floor construction built on grade.
True
False
200
A.
B.
C.
D.
CORRECT: A IGC 2003 609.2
A duct furnace shall be installed on the __ side of the blower.
Positive pressure
Negative pressure
Upstream
Intake
201
A.
B.
C.
D.
CORRECT: A IGC 2003 609.4
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All air handled by a non recirculating direct fired
industrial heater, including combustion air, shall be ducted directly from __.
The space being heated
Any return air location
Any indoor location
Any outdoor location
202
A.
B.
C.
D.
CORRECT: D IGC 2003 610.4
Ducts that exhaust clothes dryers shall not be located or penetrate __.
Concealed location
Accessible locations
Masonry walls
Fireblocking
203
A.
B.
C.
D.
CORRECT: D IGC 2003 611.4
According to the IFGC, direct fired industrial air heaters shall incorporate a means to supply outside
ventilation air to the space at a rate of not less than __
cubic feet per minute per 1,000 Btu/h or rated input of
the heater.
12
6
4
2
204
A.
B.
C.
D.
CORRECT: C IGC 2003 612.5
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Clothes dryer exhaust ducts which exhaust __ CFM
shall be provided with make up air.
200
220
300
400
205
A.
B.
C.
D.
CORRECT: A IGC 2003 614.2
Volume damper placed in the inlet side of a forced war air furnace ___.
Are not permitted
Are permitted but may not restrict the
required air flow to the unit
Are permitted without restriction
This topic is not addressed in this Code
206
A.
B.
C.
D.
CORRECT: C IGC 2003 614.5
The minimum nominal size of an exhaust duct for domestic clothes dryers must be __ inches.
6
4
3
2
207
A.
B.
C.
D.
CORRECT: B IGC 2003 614.6
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The maximum length of a clothes dryer exhaust duct
must not exceed __ feet from the dryer location to the outlet terminal.
50
10
25
15
208
A.
B.
C.
D.
CORRECT: C IGC 2003 614.6.1
Ducts in a Type 2 clothes dryer must have a minimum clearance of __ inches to combustible materials.
18
12
9
6
209
A.
B.
C.
D.
CORRECT: D IGC 2003 614.7
If a thermostat is not an integral part of a sauna heater, the heat sensing element must be located
within __ inches of the ceiling.
12
6
18
14
210
A.
B.
C.
D.
CORRECT: B IGC 2003 615.6
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The minimum unobstructed total area of the outside
and return air ducts to a forced air warm air furnace shall not be less than __ square inch/es for each 1,000
Btu/h output rating capacity of the furnace.
2
1
3
4
211
A.
B.
C.
D.
CORRECT: A IGC 2003 618.2
A refrigeration machinery room is __.
A hazardous location
Must have mechanical as well as gravity
ventilation
A prohibited source for return air
A source for contaminated air
212
A.
B.
C.
D.
CORRECT: C IGC 2003 618.3
What does a kitchen, toilet, closet, garage, bathroom and boiler room have in common?
They all qualify for placement of gas
utilization equipment
They are all residential type rooms
They are all living spaces
They are all prohibited spaces for return air
inlets
213
A.
B.
C.
D.
CORRECT: D IGC 2003 618.3 (3)
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Required outdoor air inlets shall be covered with 1/2
inch mesh type screen.
True
False
214
A.
B.
C.
D.
CORRECT: B IGC 2003 618.6
Open top broiler unit hoods shall have a minimum clearance of __ inches maintained between the
cooking top and combustible material above the hood.
18
24
30
36
215
A.
B.
C.
D.
CORRECT: B IGC 2003 618.6
According to the IFGC, suspended type unit heaters shall be installed with clearances to combustible
materials of not less than __ inches at the sides.
12
18
10
24
216
A.
B.
C.
D.
CORRECT: B IGC 2003 620.4
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According to the IFGC, floor mounted type unit
heaters shall be installed with clearances to combustible materials at the back and one side only of
not less than __ inches.
12
18
6
10
217
A.
B.
C.
D.
CORRECT: C IGC 2003 620.4
Group ___ occupancies shall not have unvented room heaters installed in them.
A
E
I
All of these
218
A.
B.
C.
D.
CORRECT: D IGC 2003 621.4
According to the IFGC, the aggregate input rating of all unvented appliances installed in a room shall not
exceed __ Btu/h per cubic foot of volume of such room.
100
70
20
45
219
A.
B.
C.
D.
CORRECT: C IGC 2003 621.5
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A Category I appliance utilizes a draft hood. Its name
plate rating is 96,000 BTU/h input. The appliance is located 5 feet horizontally from the vent. The vertical
height from the outlet of the draft hood to the outlet of
the vent is 15 feet. What is the maximum BTU/h rating this vent can handle?
87,000 BTU/h
142,000 BTU/h
130,000 BTU/h
219,000 BTU/h
220
A.
B.
C.
D.
CORRECT: B IGC 2003 623.5.1
According to the IFGC, if instructions are not available, at least __ inches of clearance must be
provided above the top of a refrigerator.
6
12
8
18
221
A.
B.
C.
D.
CORRECT: B IGC 2003 625.1
According to the IFGC, means for interrupting the
electrical supply to the air conditioning equipment and
to its associated cooling tower shall be provided within
sight of and not over __ feet from the air conditioner and cooling tower.
100
75
50
25
222
A.
B.
C.
D.
CORRECT: C IGC 2003 627.10
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A room or space which is intended exclusively to
house a gaseous hydrogen system is called a hydrogen cut-off room.
True
False
223
A.
B.
C.
D.
CORRECT: A IGC 2003 702.1
Hydrogen-generating appliances utilize __ to generate hydrogen.
Electrolysis
Reformation
Chemical processes
All of the above
224
A.
B.
C.
D.
CORRECT: D IGC 2003 702.1
Referring to gaseous hydrogen systems, 2 permanent openings, one located entirely within __ inches of the
ceiling of a garage and one located entirely within 12
inches of the floor of the garage shall be provided in
the same exterior wall.
6
12
18
24
225
A.
B.
C.
D.
CORRECT: B IGC 2003 703.1.1.1
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Piping used to convey gaseous hydrogen shall be
marked at intervals not exceeding __ feet.
10
12
18
20
226
A.
B.
C.
D.
CORRECT: A IGC 2003 704.1.2.2
According to the IFGC, shield plates shall cover the area of a pipe where the member is notched or bored,
and shall extend a minimum of __ inch/es above sole
plates.
1
2
3
4
227
A.
B.
C.
D.
CORRECT: D IGC 2003 704.1.2.3.5
Piping below ground shall be protected against __.
Corrosion
Freezing
Water
All of the above
228
A.
B.
C.
D.
CORRECT: A IGC 2003 704.1.2.3.7
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According to the IFGC, when referring to the location
of gaseous hydrogen systems, operable windows are not prohibited in interior walls.
True
False
229
A.
B.
C.
D.
CORRECT: B IGC 2003 706.3.1
According to the IFGC, to determine the size of piping used in a gas piping system, all of the following except
__ must be considered.
Diversity factor
Numbers of elbows to be used
Maximum gas demand
Specific gravity of the gas
230
A.
B.
C.
D.
CORRECT: B IGC 2003 Appendix A
Assume you have a 120,000 Btu/h input appliance with a 5-inch diameter draft hood outlet that needs to
be vented into a 10-foot high Type B vent system.
What size vent should be used assuming a 5-foot
lateral single wall metal vent connector is used with 2 90 degree elbows?
5-inch diameter
7-inch diameter
3-inch diameter
6-inch diameter
231
A.
B.
C.
D.
CORRECT: A IGC 2003 Appendix B
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According to Table A.5.1, if the nominal size of
Schedule 40 steel pipe is 1/4 inch, the internal diameter would be __ inch.
0.493
0.622
0.364
1.049
232
A.
B.
C.
D.
CORRECT: C IGC 2003 Table A.5.1
A device or method which has been approved by the code official or any other authority having jurisdiction
is:
listed
approved
certified
accepted
233
A.
B.
C.
D.
CORRECT: A IMC 2003
What is the minimum gauge galvanized steel for a Type I hood?
20 GA
22 GA
18 GA
24 GA
234
A.
B.
C.
D.
CORRECT: C IMC 2003 507.4
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The purpose of Intent is to safeguard ____
property and public welfare, health, limb or
life.
health, wealth, public and property welfare.
equipment, buildings, welfare of others.
life, liberty and the pursuit of happiness.
235
A.
B.
C.
D.
CORRECT: A IMC 2003 101.3
Disregarding exceptions, this code shall not require:I. Removal of lawfully installed equipment prior to
the acceptance of the code
II. Abandonment of mechanical systems lawfully in
existence at the time of adoption of this code
I only
II only
both I and II
either I or II
236
A.
B.
C.
D.
CORRECT: C IMC 2003 102.2
Buildings or structures that are moved into a new area that already has mechanical systems must comply with
the provisions of code ____ for new installations.
102.2
202.1
102.1
201.1
237
A.
B.
C.
D.
CORRECT: A IMC 2003 102.7
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Who does the chief appointing authority of the
jurisdiction appoint?
chief of police.
mechanical inspector.
code official.
presiding judge.
238
A.
B.
C.
D.
CORRECT: C IMC 2003 103.2
The code official shall have authority, as necessary in the interest of public health, safety and general welfare
to:
I. Interpret and implement provisions of the code
II. Enter a premise at anytime an unsafe condition exists
I only
II only
both I and II
neither I nor II
239
A.
B.
C.
D.
CORRECT: A IMC 2003 104.2 and 104.5
Margaret Kelly is the code official inspecting the structures of a building. Before she can begin her
inspection she must show ____.
birth certificate and drivers license.
rules and regulations of the IMC.
estimate of repairs.
proper identification.
240
A.
B.
C.
D.
CORRECT: D IMC 2003 104.6
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Permits shall not be required for all of the following
except:
portable heating appliances
portable cooling units
portable evaporative coolers
self contained refrigeration systems that
contain 10 pounds or more refrigerant
241
A.
B.
C.
D.
CORRECT: D IMC 2003 106.2
According to the International Mechanical Code, who is responsible to notify the authority that work is ready
for inspection?
licensed journeyman
the qualifying party
the permit holder
the company owner
242
A.
B.
C.
D.
CORRECT: C IMC 2003 107.1
According to the International Mechanical Code, the building official may call for re-inspection ____.
All of these.
when approved plans are not readily available
to the inspector.
when there is failure to provide access on the
day the inspector is required to be there.
When the portion of work for each inspection is called for and is not complete or
corrections have not been made.
243
A.
B.
C.
D.
CORRECT: A IMC 2003 107.2.3
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A dated declaration of test for a refrigeration system
shall show the signatures of which one of the following?
owner
installer
mechanical official
mechanical designer
244
A.
B.
C.
D.
CORRECT: B IMC 2003 108.4
Upon notice from a code official of a violation of the code for mechanical work:
I. Such work shall cease within 3 days
II. Such notice shall be given to the property owner
both verbally and in writing
I only
II only
both I and II
neither I nor II
245
A.
B.
C.
D.
CORRECT: D IMC 2003 108.5
A toilet room consists of ____.
a shower, spa, bathtub or a similar fixture
a toilet, bathtub, vanity and water closet
a Jacuzzi, changing room, toilet
a water closet and frequently a toilet
246
A.
B.
C.
D.
CORRECT: D IMC 2003 202
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Air removed from a conditioned space and intended
for reuse as supply air is:
return air
combustion air
outdoor air
recalculated air
247
A.
B.
C.
D.
CORRECT: D IMC 2003 202
A duct is a _____ utilized for conveying air.
gas compressor
welded joint
tube or conduit
warm-air heating appliance
248
A.
B.
C.
D.
CORRECT: C IMC 2003 202
A furnace is a self-contained heating unit that is
designed to supply ____.
combustible liquid from a source of supply to a fuel-oil-burning appliance.
heat that is transferred from one medium to another.
a passageway within a chimney or vent.
heated air to spaces remote from or adjacent
to the appliance location.
249
A.
B.
C.
D.
CORRECT: D IMC 2003 202
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Any appliance which produces a temperature from
combustion at the point of entry into the flue is:
low-heat appliance
high-heat appliance
medium- heat appliance
category I appliance
250
A.
B.
C.
D.
CORRECT: A IMC 2003 202 (c)
A pilot that burns without turn down, whether or not the main burner is firing is:
standing pilot
continuous pilot
blue flame pilot
ignition pilot
251
A.
B.
C.
D.
CORRECT: B IMC 2003 202 (c)
At what maximum pressure may a low pressure boiler supply hot water?
150 psi
160 psi
170 psi
180 psi
252
A.
B.
C.
D.
CORRECT: B IMC 2003 202 b
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What is the name of the appliance that generates
steam or other vapors in excess of 15 PSI?
steam boiler
low pressure boiler
low temperature boiler
power steam boiler
253
A.
B.
C.
D.
CORRECT: D IMC 2003 202 b
A central heating furnace that is not listed for closet or alcove installation is being installed. The room
SHALL HAVE a volume of at least ___ times greater
than the total volume of the furnace.
10
12
18
20
254
A.
B.
C.
D.
CORRECT: B IMC 2003 202 c
A joint obtained by the joining of metal parts with alloys which melt at temperatures higher than 800
degrees F is a ____ joint.
fusion
soldered
mechanical
brazed
255
A.
B.
C.
D.
CORRECT: D IMC 2003 202 definitions B
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What does a Type 1 kitchen hood remove?
grease
dust
smoke
steam
256
A.
B.
C.
D.
CORRECT: A IMC 2003 202 definitions H
A unit is considered to be readily accessible if it can be
reached for operation, to renew or repair quickly ____:
by using a step ladder
by removing a panel
without using a step ladder
by removing a door
257
A.
B.
C.
D.
CORRECT: C IMC 2003 202 definitions R
A natural draft, automatically controlled gas appliance
shall be equipped with a device that will shut off the fuel supply to the burner in the event of:
low draft condition
the flue temperature reaches 100 F
pilot flame goes out
combustion chamber temperature reaches 100
degrees F
258
A.
B.
C.
D.
CORRECT: C IMC 2003 202 s
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A listed device that will automatically shut off a
supply of fuel is required on which of the following appliances?
stove top gas boiler
kitchen range
gas fire log
warm air furnace
259
A.
B.
C.
D.
CORRECT: D IMC 2003 202 s
According to Code, the minimum depth of a trap seal is:
30,700 BTU
28,800 BTU
45,100 BTU
60,500 BTU
260
A.
B.
C.
D.
CORRECT: B IMC 2003 202 u
A residence of ordinary tightness gets all or part of its combustion air to supply its appliances by infiltration.
How many cubic feet per 1000 BTUH of combustion
air are required to supply each appliance in the
building?
50
30
40
20
261
A.
B.
C.
D.
CORRECT: A IMC 2003 202 u
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In ordinary construction, combustion air is considered
adequate by means of infiltration provided the volume of the room is not less than ___ CF per 1,000 BTU
input of the appliance.
75
50
25
40
262
A.
B.
C.
D.
CORRECT: B IMC 2003 202 u
A furnace is being installed in a garage to heat an attic apartment. Concrete filled steel posts will be installed
in front of the furnace so no vehicle will actually be
able to hit the furnace. How high above the garage
floor do the burners have to be to comply with the minimum height specified by the code?
24"
6"
12"
18"
263
A.
B.
C.
D.
CORRECT: D IMC 2003 304.3
Central furnaces within a compartment shall have a
minimum working space clearance from the back and
sides of:
2"
3"
4"
5"
264
A.
B.
C.
D.
CORRECT: A IMC 2003 306.1.1
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According to the International Mechanical Code, a
furnace room shall have an opening or passage large enough to remove the largest piece of equipment in
such room and not be less than ___ wide x ___ high.
2', 3'-6"
2', 6'-8"
2', 6'-9"
2', 7'-6"
265
A.
B.
C.
D.
CORRECT: C IMC 2003 306.2
The total distance from a passageway opening to any furnace located in a crawl space shall not be more than
____ feet
15
20
25
30
266
A.
B.
C.
D.
CORRECT: B IMC 2003 306.3
A level working platform of not less than ____ inches in depth shall be provided in front of the entire fire
box side of an attic furnace including access to other
controls.
30
32
42
36
267
A.
B.
C.
D.
CORRECT: A IMC 2003 306.3
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Which of the following is required when a warm air
furnace is installed in an attic?
the electric outlet and lighting fixture must be installed near the furnace
the attic must have fire-resistive decking
an electric outlet and lighting fixture must be installed near the attic access door
all air ducts must be installed at least 5' above
the service area
268
A.
B.
C.
D.
CORRECT: A IMC 2003 306.3.1
A furnace located under the floor shall have ____ at or near the furnace?
the service record
a permanent electric outlet and light fixture
a light fixture
a starting collar
269
A.
B.
C.
D.
CORRECT: B IMC 2003 306.4.1
According to the International Mechanical Code, a non-listed furnace which is to be installed on a roof
that is 18' high:
may be installed on a properly constructed
roof jack
must be provided with permanent means of
access
must be in a properly constructed penthouse
must be water tight
270
A.
B.
C.
D.
CORRECT: B IMC 2003 306.5
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Furnaces located on a roof with a pitch greater than 4'
on 12, shall have a level working platform of at least:
48" x 48"
24" x 30"
30" x 48"
30" x 30"
271
A.
B.
C.
D.
CORRECT: D IMC 2003 306.6
Where condensate drain lines serve more than one fuel burning appliance in the same residence, the drain line
diameter shall be:
approved by building official before
installation
no less than 1"
approved by local fire Marshall after
installation
not less that the appliance connection
272
A.
B.
C.
D.
CORRECT: D IMC 2003 307.2.2
Combustion air vent openings that terminate on the outside of the building shall be covered with a
corrosion resistant screen that has a wire mesh of:
1/8"
1/16"
1/4"
1/2"
273
A.
B.
C.
D.
CORRECT: C IMC 2003 401.6
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Natural ventilation is defined by the code as being
obtained through all of the following except:
an open window
make up air fan
an open door
infiltration
274
A.
B.
C.
D.
CORRECT: D IMC 2003 402.1
According to the International Mechanical Code, in which chapter of the International Building Code shall
natural ventilation of an occupied space comply to?
3
6
9
12
275
A.
B.
C.
D.
CORRECT: D IMC 2003 402.1
Mechanical ventilation may be provided by all of the following except:
supply air fans
bathroom exhaust fan
make up air fan
gravity roof ventilator
276
A.
B.
C.
D.
CORRECT: D IMC 2003 403.1
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In what section of the International Mechanical Code
would you refer to in order to find the minimum ventilation rate of required outdoor air?
401.6
402.2.4
403.2
404.5
277
A.
B.
C.
D.
CORRECT: C IMC 2003 403.2
Public toilet rooms shall be ventilated with exhaust air at the rate of:
75 cfm per water closet or urinal
25 cfm per square foot
.5 cfm per cubic foot
no less than 150 cfm exhaust fans
278
A.
B.
C.
D.
CORRECT: A IMC 2003 403.3
An auditorium is being designed for an occupant load of 100 persons per 1000 square feet. The theater
measure 157' x 127' of conditioned floor area. What is
the design outdoor air cfm?
398
299
199
20
279
A.
B.
C.
D.
CORRECT: C IMC 2003 403.3 table
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Mechanical ventilation systems for public garages
must activate upon detection of ____ ppm of carbon monoxide.
25
30
33
41
280
A.
B.
C.
D.
CORRECT: A IMC 2003 404.1
Air from a public building may be exhausted to the outdoors in all of the following locations except:
side wall louver
positive discharge roof ventilator
an adequate louvered attic space
basement air shaft
281
A.
B.
C.
D.
CORRECT: C IMC 2003 501.2
In what area shall an inlet to an exhaust system be located?
at floor level.
in the area of the heaviest concentration of
contaminants.
to the immediate left of an outlet door.
in the crawl space of the attic.
282
A.
B.
C.
D.
CORRECT: B IMC 2003 502.1.1
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According to Code, electric ARC projectors without an
exhaust connection shall have the contaminates removed through a mechanical exhaust system at a
rate of ____ cfm per lamp.
100
150
200
250
283
A.
B.
C.
D.
CORRECT: C IMC 2003 502.5.2
In accordance to the International Mechanical Code, during the construction, alteration or demolition of a
structure where the use of materials that contain
solvents that are flammable ____ must be used.
ceiling fan
both manuel and automatic shut-off valves
automatic sprinkler system
ventilation
284
A.
B.
C.
D.
CORRECT: D IMC 2003 502.6.1
Parts of fans in contact with explosive or flammable vapors shall be made of?
nonferrous material
forged steel
cast steel
molybdenum/steel alloy
285
A.
B.
C.
D.
CORRECT: A IMC 2003 503.2
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Ducts from clothes dryers shall:
I. Terminate on the outside of the building with a volume damper
II. Have a smooth interim finish with a maximum
developed length of 20'
I only
II only
both I and II
neither I nor II
286
A.
B.
C.
D.
CORRECT: D IMC 2003 504.6.1
Ducts conveying exhaust from hoods over commercial kitchen ranges, should have a conveying velocity of
____.
1500 fpm
1000 fpm
2000 fpm
500 fpm
287
A.
B.
C.
D.
CORRECT: A IMC 2003 506.3.6
The velocity in a grease duct serving a commercial range hood shall not be less than ____ feet per minute.
1200
1500
1800
2000
288
A.
B.
C.
D.
CORRECT: B IMC 2003 506.3.6
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Duct systems serving a type I hood shall slope not less
than ___ inch per linear foot towards the hood.
1/4
1/2
3/4
1
289
A.
B.
C.
D.
CORRECT: A IMC 2003 506.3.9
A Type I island hood is being sized for a deep fat fryer. The open area of the hood is 24 square feet (4' x
6'). According to the IMC, the cfm requirement for
this hood is:
2400 cfm
3200 cfm
3600 cfm
4800 cfm
290
A.
B.
C.
D.
CORRECT: C IMC 2003 507.13.4
Each exhaust outlet in a Type I hood shall serve no more than a ____ foot section of hood.
10
12
14
16
291
A.
B.
C.
D.
CORRECT: B IMC 2003 507.15
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When using copper to construct a Type II exhaust
hood, the sheets shall be no less than ____ ounces per square foot.
24
22
20
18
292
A.
B.
C.
D.
CORRECT: A IMC 2003 507.5
The portion of a type I hood shall have clearance from unprotected combustible construction of not less than
____ inches.
15
18
21
24
293
A.
B.
C.
D.
CORRECT: B IMC 2003 507.9
According to Code, the temperature difference between the makeup air and the kitchen space where
cooking fumes are being exhausted shall not exceed:
5 degrees F
10 degrees F
ambient outside temperature
ambient indoor temperature
294
A.
B.
C.
D.
CORRECT: B IMC 2003 508.1.1
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Ducts used to convey flammable vapors in excess of
the acceptable lower flammability limit shall extend directly:
to the exterior of the building without
entering other spaces
to the exterior of the building but may pass
through no more than one building space
to the exterior of the building but may pass through no more than two other building
spaces
into a filtering system to reduce the level of the flammables and then recirculate the air to
other building spaces
295
A.
B.
C.
D.
CORRECT: A IMC 2003 510 5.7
A hazardous exhaust galvanized duct has a square
dimension of 28". The material used for fabricating
the duct should be ____ gage.
18
16
14
12
296
A.
B.
C.
D.
CORRECT: C IMC 2003 510.8 Table
A dust conveying duct system shall be provided with:
safety relief system
explosion relief system
both A and B
Either A or B
297
A.
B.
C.
D.
CORRECT: D IMC 2003 511.1.5
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Stud wall cavities and the spaces between solid floor
joists utilized as air plenums shall:I. Not be utilized as a plenum for supply air
II. Be isolated from adjacent concealed spaces by
approved fire blocking
I only
II only
both I and II
either I or II
298
A.
B.
C.
D.
CORRECT: C IMC 2003 602.3
What minimum clearance is required between a fabricated metal duct and the ground below?
8"
2"
6"
4"
299
A.
B.
C.
D.
CORRECT: D IMC 2003 603.14
You are directed to fabricate 100 feet of 14x10 low pressure galvanized iron ductwork, using a 10%
waste factor for joints and seams. In accordance with
able 603.3 of the International Mechanical Code, this duct system would weigh approximately ____ pounds.
234
343
421
512
300
A.
B.
C.
D.
CORRECT: C IMC 2003 603.3 Table
28 gage is the minimum required thickness for this duct. It weighs .7812 pounds per square foot. 14 X 10
duct has a perimeter of 48 inches or 4'. 1 lf weighs 4 X .7812 or 3.12 pound per LF. 100 LF weighs 312
pounds. Add 10% for seams = 343#
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Round aluminum ducts used in a single family
dwelling shall be of ____ minimum gage.
28
26
24
22
301
A.
B.
C.
D.
CORRECT: B IMC 2003 603.4
What cannot be used for the fabrication of evaporative cooling ducts?
a masonry shaft connected to the outdoors
galvanized steel
copper
gypsum wall board
302
A.
B.
C.
D.
CORRECT: D IMC 2003 603.4.1
What class of non-metallic duct is designated to convey conditioned air?
0
1
2
3
303
A.
B.
C.
D.
CORRECT: B IMC 2003 603.5
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According to the UL 181, nonmetallic ducts shall be
constructed with ____ duct material.
Class 0 or Class 3
Class I or Class 2
Class 2 or Class 5
Class 0 or Class I
304
A.
B.
C.
D.
CORRECT: D IMC 2003 603.5
Class 0 duct shall have a flame spread rating not to exceed:
0
25
50
75
305
A.
B.
C.
D.
CORRECT: A IMC 2003 603.6.1
What must be done to ducts installed in the ground?
embedded in 2" of 200 PSI or less concrete
tested for water leaks at 3 PSI per hour
embedded in 3" of light weight concrete
joints tightly sealed
306
A.
B.
C.
D.
CORRECT: D IMC 2003 603.8
How are joints in ducts made air tight?
use of ductmate flanges
tape, mastic, gasketing
silicone sealant
companion angle rings
307
A.
B.
C.
D.
CORRECT: B IMC 2003 603.8
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Before the concrete encasement can be pored all ducts
must be ____.
tested
inspected by the code official
secured and sealed
sloped to allow for proper drainage
308
A.
B.
C.
D.
CORRECT: C IMC 2003 603.8.2
In accordance with the ASTM D 2412, plastic ducts are constructed of ____.
metal
fibrous glass
gypsum
PVC
309
A.
B.
C.
D.
CORRECT: D IMC 2003 603.8.3
Air ducts are being installed for a central air conditioner. Supply air ducts run through a ventilated
attic in Heating Zone I. All of the following
insulations may be used except:
1 1/2 " mineral fiber or glass blanket
1" mineral fiber or glass blanket
vapor barrier with PERM Rating of 1.5
1 1/2 " mineral board
310
A.
B.
C.
D.
CORRECT: C IMC 2003 604.11
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What maximum flame spread rating is allowed for
insulation jacketing?
75
50
25
100
311
A.
B.
C.
D.
CORRECT: C IMC 2003 604.3
Exposed materials used inside a duct system shall have what maximum flame spread rating?
75
50
25
100
312
A.
B.
C.
D.
CORRECT: C IMC 2003 604.3
According to the International Mechanical Code, central heating and air-conditioning systems shall be
equipped with:
I. air filters II. Air filters installed din the return air side
I only
II only
Both I and II
Neither I nor II
313
A.
B.
C.
D.
CORRECT: D IMC 2003 605.1
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According to the International Mechanical Code,
ductwork shall connect to fire damper sleeves so that a collapse of the duct system during a fire:
will not impair the sleeve connection
will not dislodge the hangers
will not impair the damper operation
will maintain the bolted connection
314
A.
B.
C.
D.
CORRECT: B IMC 2003 607.1
Which of the following is not one of the purposes of the combustion air ducts provided to an appliance?
provides draft dilution air
provides ventilation air for the equipment
provides exhaust in case of a gas leak
provides air for fuel combustion
315
A.
B.
C.
D.
CORRECT: C IMC 2003 701.2
When combustion air vents are terminated in a vented attic space, the attic shall have a clear vertical height
of no less than ___ inches.
15
20
25
30
316
A.
B.
C.
D.
CORRECT: D IMC 2003 701.4.2
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Combustion air for gas appliances shall not be taken
from ____.
an attic
a refrigeration machinery room
a crawl space
an appliance enclosure
317
A.
B.
C.
D.
CORRECT: B IMC 2003 701.5
According to the International Mechanical Code, a warm air furnaces' combustion air supply may NOT be
taken from:
communicating residence air
attic
outside air shaft
a well ventilated refrigeration machinery room
318
A.
B.
C.
D.
CORRECT: D IMC 2003 701.5
Combustion air must be delivered to a mechanical room and divided equally to the lower?
8"
10"
12"
6"
319
A.
B.
C.
D.
CORRECT: C IMC 2003 702.1
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In a building of unusually tight construction, an
appliance is to be installed in an unconfined space. Combustion air to supply the appliance shall be taken
directly from the outdoors through 2 openings. Each
opening shall have a minimum free area for all appliances requiring combustion air of one square inch
per:
1000 BTUH
5000 BTUH
2000 BTUH
4000 BTUH
320
A.
B.
C.
D.
CORRECT: B IMC 2003 703.1.2
Combustion air vents for a gas fired 25,000 btu/per
hour appliance will terminate in the attic. The attic
space communicates directly with the outdoors. What
minimum diameter vertical vents are required? (If between sizes, go to larger size.)
6"
7"
8"
9"
321
A.
B.
C.
D.
CORRECT: B IMC 2003 703.1.4
A boiler room of tight construction contains three
boilers: 2 rated at 1,000,000 BTU each, and one rated
at 500,000 BTU. The minimum required area for combustion air is ____square inches. (NOTE:
Combustion air taken exclusively from outdoors and
meets Condition 1)
3000
2500
2000
1500
322
A.
B.
C.
D.
CORRECT: B IMC 2003 704.1.2
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When an opening or duct is required to supply fresh
air to a gas fired water heater, the smallest dimension shall be at least:
2
3
4
5
323
A.
B.
C.
D.
CORRECT: C IMC 2003 709.1
In a single family dwelling, an unobstructed stud space may be used as a combustion air duct provided no
more than ___ fire stops are removed.
4
3
2
1
324
A.
B.
C.
D.
CORRECT: D IMC 2003 709.1 (1) exception
According to the International Mechanical Code, combustion air ducts for heat producing appliances
shall not be installed in a location that requires the use
of____ except when electrically interlocked with the
firing cycle of the appliance.
manual dampers
fire dampers
volume dampers
sheet metal screws
325
A.
B.
C.
D.
CORRECT: B IMC 2003 710.2
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What is the minimum distance at "A"?
1'
2'
3'
4'
326
A.
B.
C.
D.
CORRECT: A IMC 2003 802.6
A Type B gas vent must terminate not less than ___
above any vertically extended portion of a building when it is within 10' of the vertical portion.
1'
2'
3'
4'
327
A.
B.
C.
D.
CORRECT: A IMC 2003 802.6
A listed residential water heater with a draft hood has a chimney connector made of single wall metal pipe.
What minimum clearance is required between the
connector and any unprotected combustible material?
9"
3"
6"
12"
328
A.
B.
C.
D.
CORRECT: C IMC 2003 803.10.4 Table
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Where is the water discharge line from a cooling tower
required to be piped?
to an open type expansion tank
into the supply side of a water softener
into a boiler feedwater system
to an approved disposal system
329
A.
B.
C.
D.
CORRECT: D IMC 2003 908.3
What minimum clearance is required between a swinging door and a vented wall furnace?
8"
6"
4"
2"
330
A.
B.
C.
D.
CORRECT: B IMC 2003 909.3
A furnace located under the floor shall have a clearance of ____ from the ground?
6"
10"
12"
3"
331
A.
B.
C.
D.
CORRECT: A IMC 2003 910.2
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A floor furnace shall not be installed:
using lag bolts supported by floor joists
on concrete slab on grade
with a 2" clearance to the ground when sealed by the manufacturer
with a 12" clearance to an inside corner from the outlet register or grille
332
A.
B.
C.
D.
CORRECT: B IMC 2003 910.2
According to IMC, a sauna room is to have a ventilation opening near the top of the door not less
than:
3" x 6"
4" x 8"
5" x 10"
5" x 12"
333
A.
B.
C.
D.
CORRECT: B IMC 2003 914.5
A blower type warm air furnace must have its air supply duct sized according to BTUH output rating of
the furnace. What minimum unobstructed cross
sectional supply duct area is required for a 180,000
BTUH furnace?
360 sq. inches
720 sq. inches
240 sq. inches
180 sq. inches
334
A.
B.
C.
D.
CORRECT: A IMC 2003 918.2
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The minimum unobstructed total area of supply duct
from a forced warm air furnace shall not be less than ____" per 1000 Btuh output rating of the furnace.1
1
2
3
4
335
A.
B.
C.
D.
CORRECT: B IMC 2003 918.2
From which of the following places is return air prohibited?
a dining area
a tool room
a closet
none of these
336
A.
B.
C.
D.
CORRECT: C IMC 2003 918.6
When is the return air from one apartment unit permitted to mix with the return air from another
apartment?
with permission of the administrative
authority
when the apartment building is multi-floor
when apartments are separated by a fire wall
not permitted
337
A.
B.
C.
D.
CORRECT: D IMC 2003 918.8
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What minimum return vent opening is required for a
120,000 BTUH upflow warm air furnace in a residence?
240 square inches
840 square inches
480 square inches
720 square inches
338
A.
B.
C.
D.
CORRECT: A IMC 2003 923.2
Water heaters used for both potable water and space heating shall be limited to a maximum temperature of:
120 degrees F
130 degrees F
140 degrees F
150 degrees F
339
A.
B.
C.
D.
CORRECT: C IMC 2003 1002.2.1
What is the minimum clearance for a residential gas boiler from the sides & back?
12"
14"
16'
18"
340
A.
B.
C.
D.
CORRECT: D IMC 2003 1004.3
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The controls have been set for a new hot water boiler
and it has passed its operational test. A set of operating instructions has been given to the new
owner. The Code also requires the installer to give the
new owner:
warranty
pressure test results
control wiring diagram
inspection notice
341
A.
B.
C.
D.
CORRECT: C IMC 2003 1004.7
When a natural gas fired low pressure boiler has a low water condition and the burner is operating, the
________ shuts off gas to the burner.
manual reset valve
main gas solenoid
zero reducing governor
vapor stat
342
A.
B.
C.
D.
CORRECT: B IMC 2003 1007.2
According to Code, open type expansion tanks for hot water heating systems shall have an overflow pipe
with a minimum diameter of:
1"
1 1/4"
1 1/2"
2"
343
A.
B.
C.
D.
CORRECT: A IMC 2003 1009.3
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The pressure test gauge used for testing a boiler or
pressure vessel shall be graduated over a range of:I. Not less than 1 1/2 times maximum test pressure
II. Not more than 4 times maximum test pressure
I only
II only
both I and II
either I or II
344
A.
B.
C.
D.
CORRECT: C IMC 2003 1011.2
What minimum clear height is required in a refrigeration machinery room?
7'- 2"
6'- 2"
6'- 4"
6'- 8"
345
A.
B.
C.
D.
CORRECT: D IMC 2003 1105.2
Refrigeration machinery rooms shall contain a refrigerant detector with:
I. An audible alarm
II. A visual alarm
I only
II only
both I and II
either I or II
346
A.
B.
C.
D.
CORRECT: C IMC 2003 1105.3
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According to the International Mechanical Code, the
frequency for the air to be changed in a room that houses a refrigeration condensing unit is:
every 30 minutes
not less than .5 cfm per square foot
25 cfm per person in the room
.25 cfm per aggregate tons of refrigeration in
the room
347
A.
B.
C.
D.
CORRECT: C IMC 2003 1105.8.3
A refrigeration room for ammonia shall be equipped with a detector that will energize the ventilation
system when the room reaches ___ ppm saturation of
ammonia.
1000
1500
2000
2500
348
A.
B.
C.
D.
CORRECT: A IMC 2003 1106.3.1
What is the maximum nominal size soft drawn copper tubing that may be used for lines on a refrigeration
system?
7/8"
3/4"
5/8"
1/2"
349
A.
B.
C.
D.
CORRECT: A IMC 2003 1107.4.3
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What is required to be installed at each refrigerant
piping outlet from a receiver?
stop valve
pressure relief valve
pressure limiting device
check valve
350
A.
B.
C.
D.
CORRECT: A IMC 2003 1107.7
What type of material should not be used in a low pressure steam or hot water system?
brass tubing
wrought iron
galvanized pipe
aluminum tubing
351
A.
B.
C.
D.
CORRECT: D IMC 2003 1202
A metal sleeve is installed through an interior wall to hold high temperature water pipes. The pipes shall be
insulated with:
the same thickness as the insulation required
for the other sections of exposed pipe
1/2 the thickness of the required insulation of
the other sections of the exposed pipe
twice the thickness of the required insulation on the exposed suspended pipes
at least 1/2 the thickness of the sleeve minus the nominal pipe size
352
A.
B.
C.
D.
CORRECT: A IMC 2003 1206.4
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Which of the following codes has been adopted as the
Mechanical Code for Oklahoma?
UMC
IMC
1997 UMC
1997 IPC
353
A.
B.
C.
D.
CORRECT: D IMC 2003 13
According to the International Mechanical Code, if an appliance has been designed for a certain type of fuel
in which it will be connected to, before it can be
converted from the specified fuel listed on the rating
plate for use with a different fuel, the code official must give reapproval.
True
False
354
A.
B.
C.
D.
CORRECT: A IMC 2003 1301.3
Exposed fuel gas piping other than black steel pipe shall be:
I. Identified by a black label marked "GAS"
in yellow letters II. Spaced at intervals not less then "5' "
I only
II only
Both I and II
Neither I nor II
355
A.
B.
C.
D.
CORRECT: D IMC 2003 1301.5
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To calculate CFH of gas required for an appliance,
divide the maximum Btuh input of the appliance by:
1000 Btuh per cubic foot
the average Btuh per cubic foot value supplied
1150 Btuh per cubic foot
the minimum Btuh per cubic foot value
supplied
356
A.
B.
C.
D.
CORRECT: B IMC 2003 1302.2.1
According to the IMC, the demand for a domestic clothes dryer is:
35,000 Btuh
45,000 Btuh
50,000 Btuh
55,000 Btuh
357
A.
B.
C.
D.
CORRECT: A IMC 2003 1302.3 Table
According to the IMC, an emergency steam boiler of 50 horsepower, would have a demand factor of:
50,000 Btuh
250,000 Btuh
1,500,000 Btuh
2,500,000 Btuh
358
A.
B.
C.
D.
CORRECT: D IMC 2003 1302.3 Table
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A plastic pipe gas piping system has been installed.
The developed length of the system is 27'. The total demand of the system is 375,000 Btuh. What is the
minimum allowable size for the yardline?
5/8"
7/8"
1 1/8"
1 1/4"
359
A.
B.
C.
D.
CORRECT: C IMC 2003 1302.5 (4)
The common gas supply line to a multiple family dwelling unit is permitted to be sized for a percentage
of the total gas demand. The gas demand for heating
equipment for each dwelling unit shall be multiplied
by ____ and added to the demand value of the common pipe system.
120%
110%
100%
90%
360
A.
B.
C.
D.
CORRECT: D IMC 2003 1302.9
An apartment complex of 40 units contains gas ranges
and water heaters. What multiplier is used to find the
derated connected load?
.21
.22
.23
.24
361
A.
B.
C.
D.
CORRECT: B IMC 2003 1302.9 Table
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An apartment complex of 50 units will have the
following appliances in each unit:
gas ranges free standing
30 gallon water heater
What is the total connected load?
1,850,000
950,000
4,750,000
3,350,000
362
A.
B.
C.
D.
CORRECT: B IMC 2003 1302.9 Table
A length of malleable black pipe which has been
previously used in a portable water system is found on
the truck and is just the right length for the last
segment of a natural gas piping system. Since the length of pipe is less than 10', the pipe is installed and
put under pressure for testing. The pipe system has
passed the test. What code section does this installation violate?
G103.10
312.3
312.9
G103.8
363
A.
B.
C.
D.
CORRECT: D IMC 2003 1303.1
Joints between differing pipe materials shall be:
stainless steel adaptors
approved adaptor fittings
brass couplings
schedule 80 PVC
364
A.
B.
C.
D.
CORRECT: B IMC 2003 1303.11
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Which of the following methods shall be used to join
PE or PB piping?
compression fittings
insert fittings
solvent weld
heat fuse
365
A.
B.
C.
D.
CORRECT: D IMC 2003 1303.17.2
All pipe which has been cut for use in a fuel gas piping system shall:
I. Be cut square with the pipe
II. Reamed to full bore
I only
II only
Both I and II
Neither I nor II
366
A.
B.
C.
D.
CORRECT: C IMC 2003 1303.2
According to the IMC, a 120' length black malleable pipe carrying 46,000 Btuh of gas demand shall have
____ threads cut on the pipe at each fitting or joint.
8
10
12
13
367
A.
B.
C.
D.
CORRECT: B IMC 2003 1303.23.2
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Joint compound used for fuel gas piping systems shall:
I. Be applied to mail threads only II Be resistant to action of fuel gas.
I only
II only
Both I and II
Neither I nor II
368
A.
B.
C.
D.
CORRECT: D IMC 2003 1303.3.3
Gas piping inside any building shall not be run in all of the following locations except:
air duct
chimney
elevator shaft
concealed chase
369
A.
B.
C.
D.
CORRECT: D IMC 2003 1304.0
According to the IMC, the minimum bury depth for an underground gas piping system is:
12"
14"
16"
18"
370
A.
B.
C.
D.
CORRECT: D IMC 2003 1304.11
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A tracer wire for underground plastic gas piping shall:
I. Have green insulationII. Not be less than 20 awg
III. Suitable for direct burial
I only
II only
III only
None of these
371
A.
B.
C.
D.
CORRECT: C IMC 2003 1304.17.1
When testing for tightness in a fuel gas piping system all of the following except ____ are permitted.
air
oxygen
nitrogen
argon
372
A.
B.
C.
D.
CORRECT: B IMC 2003 1304.18
When gas piping is installed through wood studs and is less than 1 1/4" from the nearest edge of the stud,
the point of passage shall be protected with a face
plate not less than ____.
1/32
1/16
3/32
1/8
373
A.
B.
C.
D.
CORRECT: B IMC 2003 1304.6
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Gas piping shall not be installed in:
solid floors
2 x 10 floor joists
concealed walls
attics
374
A.
B.
C.
D.
CORRECT: A IMC 2003 1305.2.1
The installation of gas piping is a trench containing
water piping is:
prohibited
encouraged
permitted with administrative authority
approval
permitted when 12" separation is maintained
375
A.
B.
C.
D.
CORRECT: C IMC 2003 1305.2.1
Each gas meter shall have its own shut off valve located:
up stream of the meter
downstream of the meter
near the building entrance
within 2' of the building entrance
376
A.
B.
C.
D.
CORRECT: B IMC 2003 1305.7
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A shut off valve shall be installed for each appliance.
Each shut off valve shall:I. Be in the same room as the appliance.
II. Be within 3" of the appliance.
I only
II only
Both I and II
Neither I nor II
377
A.
B.
C.
D.
CORRECT: A IMC 2003 1307.2
According to the IMC, the maximum distance between horizontal supports for 1 1/4" schedule 40
black pipe is:
8'
10'
12'
14'
378
A.
B.
C.
D.
CORRECT: A IMC 2003 1308.5
According to the IMC, and disregarding exceptions, the maximum length of an appliance fuel connector
shall be:
3'
4'
5'
6'
379
A.
B.
C.
D.
CORRECT: A IMC 2003 1309.1.2
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According to the IMC, the maximum length of a fuel
connector to a dryer is:
3'
4'
5'
6'
380
A.
B.
C.
D.
CORRECT: D IMC 2003 1309.1.2
According to the IMC, a 1' long semi rigid connector of 3/8" OD can carry ____ Btuh.
25,000
35,000
40,000
50,000
381
A.
B.
C.
D.
CORRECT: C IMC 2003 1309.1.2 (1)
Refer to the whole house drawing and floor plan in ACCA manual "D". The minimum standard duct size
required to supply outlet #3 is ____ inch diameter.
5
4
3
6
382
A.
B.
C.
D.
CORRECT: C Manual D
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Refer to the whole house drawing and floor plan in
ACCA manual "D". The total effective length of the duct supplying outlet #5 is ____ feet.
53
30
48
18
383
A.
B.
C.
D.
CORRECT: D Manual D
Refer to the whole house drawing and floor plan in ACCA manual "D". The minimum standard round
duct size required to supply outlet "D".
384
A.
B.
C.
D.
CORRECT: A Manual D
Refer to the whole house drawing and floor plan in ACCA manual "D". The minimum standard round
duct size required to supply outlet # 4 is ____ inch
diameter.
4
3
6
7
385
A.
B.
C.
D.
CORRECT: B Manual D
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Refer to the whole house drawing and floor plan in
ACCA manual "D". To achieve a 45 degree F temperature rise across the heat exchanger, a furnace
blower needs to deliver ____ of air.
1600 CFM
1350 CFM
930 CFM
1870 CFM
386
A.
B.
C.
D.
CORRECT: C Manual D
Refer to the whole house drawing and floor plan in ACCA manual "D". The branch design static pressure
for outlet 10 during heating is:
.65" WG per 100'
.55" WG per 100'
.6" WG per 100'
.5" WG per 100'
387
A.
B.
C.
D.
CORRECT: D Manual D
Refer to the whole house drawing and floor plan in ACCA manual "D". The total respective length of the
duct supplying outlet # 4 is ____ feet.
13
38
70
83
388
A.
B.
C.
D.
CORRECT: A Manual D
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The maximum air velocity through a rigid walled
branch duct on the return side of an HVAC system is recommended to be ____ FPM.
500
400
600
700
389
A.
B.
C.
D.
CORRECT: B Manual D
Refer to the branch duct drawing. The branch plenum velocity factor at point "A" in the diagram is equal to
____ of equivalent length.
cannot tell from the diagram
20'
30'
10'
390
A.
B.
C.
D.
CORRECT: D Manual D 4-2
Heat loss calculations for buildings slab on grade according to Manual J the heat loss near the edge will
be greater than near the center. A perimeter system
will affect the change in temperature.
True
False
391
A.
B.
C.
D.
CORRECT: A MANUAL J
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What are the annual heating degree days in San
Antonio, TX?
2220
2837
1560
3456
392
A.
B.
C.
D.
CORRECT: C MANUAL J
What are the annual heating degree days in San Antonio, TX?
2220
2837
1560
3456
393
A.
B.
C.
D.
CORRECT: C MANUAL J
An 8" sand and gravel concrete block has an overall R-value of approximately ____.
.11
1.11
4.6
10.1
394
A.
B.
C.
D.
CORRECT: B Manual J
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An 8" sand and gravel concrete block has an overall R-
value of approximately ____.
.11
1.11
4.6
10.1
395
A.
B.
C.
D.
CORRECT: B Manual J
Refer to drawing MJ-HC-G. Use ACCA Manual J for calculations. Excluding duct loss, the total design
heating load for this house is ____ Btuh.
30,001-35,000
under 30,000
35,001-40,000
over 40,000
396
A.
B.
C.
D.
CORRECT: B Manual J
Manual J should not be used to estimate heating and cooling loads for all of the following except:
residential designs which include solariums
and atriums
residential designs which include five or more bedrooms
residential designs which include hot tubs or
swimming pools
residential designs which include passive or
active solar construction
397
A.
B.
C.
D.
CORRECT: B Manual J
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Sizing of furnaces, air-conditioning equipment, fan,
and ductwork is selected using:
the number of rooms in a structure
the number of persons occupying the dwelling
load calculation for the entire structure
the load calculations of the occupied areas
398
A.
B.
C.
D.
CORRECT: C Manual J
Sizing of furnaces, air-conditioning equipment, fan, and ductwork is selected using:
the number of rooms in a structure
the number of persons occupying the dwelling
load calculation for the entire structure
the load calculations of the occupied areas
399
A.
B.
C.
D.
CORRECT: C Manual J
When heating/cooling equipment is oversized:I. Operating costs go down & efficiency goes up.
II. Operating costs go down & efficiency goes down.
III. Operating cost go up; efficiency goes down; system
control goes down.
I only
II only
III only
Neither I nor II nor III
400
A.
B.
C.
D.
CORRECT: C Manual J
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When heating/cooling equipment is oversized:
I. Operating costs go down & efficiency goes up.II. Operating costs go down & efficiency goes down.
III. Operating cost go up; efficiency goes down; system
control goes down.
I only
II only
III only
Neither I nor II nor III
401
A.
B.
C.
D.
CORRECT: C Manual J
Undersizing residential equipment:I. Will provide comfort even in extreme weather
conditions.
II. Is not generally preferred to oversizing equipment.
I only
II only
Both I and II
Neither I nor II
402
A.
B.
C.
D.
CORRECT: D Manual J
Undersizing residential equipment:
I. Will provide comfort even in extreme weather
conditions.
II. Is not generally preferred to oversizing equipment.
I only
II only
Both I and II
Neither I nor II
403
A.
B.
C.
D.
CORRECT: D Manual J
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Maximum heat loss in a residence occurs:
in January
on overcast days
during hours of precipitation
just before sunrise
404
A.
B.
C.
D.
CORRECT: D Manual J
Maximum heat loss in a residence occurs:
in January
on overcast days
during hours of precipitation
just before sunrise
405
A.
B.
C.
D.
CORRECT: D Manual J
Outside design temperature is:
I. Not the lowest temperature experienced in a locality.II. The winter temperature experienced in a locality
under average winter weather.
I only
II only
Either I or II
Both I and II
406
A.
B.
C.
D.
CORRECT: D Manual J
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Outside design temperature is:
I. Not the lowest temperature experienced in a locality.II. The winter temperature experienced in a locality
under average winter weather.
I only
II only
Either I or II
Both I and II
407
A.
B.
C.
D.
CORRECT: D Manual J
According to Manual J, Table 1, the outside design temperature for 97 1/2 % dry bulb value for Amarillo
TX is:
35 degrees F
11 degrees F
27 degrees F
34 degrees F
408
A.
B.
C.
D.
CORRECT: B Manual J
According to Manual J, Table 1, the outside design temperature for 97 1/2 % dry bulb value for Amarillo
TX is:
35 degrees F
11 degrees F
27 degrees F
34 degrees F
409
A.
B.
C.
D.
CORRECT: B Manual J
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According to Manual J, the design temperature
difference (TD) is calculated:
by multiplying the outside design temperature by 97 1/2%
by multiplying the indoor design temperature by 97 1/2%
by subtracting the indoor design temperature
from the outdoor design temperature
by subtracting the outdoor design temperature
from the indoor design temperature
410
A.
B.
C.
D.
CORRECT: D Manual J
According to Manual J, the design temperature difference (TD) is calculated:
by multiplying the outside design temperature
by 97 1/2%
by multiplying the indoor design temperature
by 97 1/2%
by subtracting the indoor design temperature from the outdoor design temperature
by subtracting the outdoor design temperature
from the indoor design temperature
411
A.
B.
C.
D.
CORRECT: D Manual J
According to Manual J, the recommended indoor
design temperature to be used in heat loss calculations
is:
68 degrees F
70 degrees F
72 degrees F
80 degrees F
412
A.
B.
C.
D.
CORRECT: B Manual J
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According to Manual J, the recommended indoor
design temperature to be used in heat loss calculations is:
68 degrees F
70 degrees F
72 degrees F
80 degrees F
413
A.
B.
C.
D.
CORRECT: B Manual J
Building losses, according to Manual J, are losses associated with:
building envelop
losses through ductwork
losses through kitchen exhaust
infiltration
414
A.
B.
C.
D.
CORRECT: A Manual J
Building losses, according to Manual J, are losses associated with:
building envelop
losses through ductwork
losses through kitchen exhaust
infiltration
415
A.
B.
C.
D.
CORRECT: A Manual J
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Conductive losses through glass windows, solid doors
and walls below grade are examples of:I. Building losses.
II. System losses.
I only
II only
Both I & II
Neither I nor II
416
A.
B.
C.
D.
CORRECT: A Manual J
Conductive losses through glass windows, solid doors and walls below grade are examples of:
I. Building losses.
II. System losses.
I only
II only
Both I & II
Neither I nor II
417
A.
B.
C.
D.
CORRECT: A Manual J
Heat loss in ductwork passing through an unheated space, ventilation air heated prior to space
introduction and bathroom exhaust which increases
infiltration are examples of :I. Building losses.
II. System losses.
I only
II only
Both I and II
Neither I nor II
418
A.
B.
C.
D.
CORRECT: B Manual J
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Heat loss in ductwork passing through an unheated
space, ventilation air heated prior to space introduction and bathroom exhaust which increases
infiltration are examples of :
I. Building losses.II. System losses.
I only
II only
Both I and II
Neither I nor II
419
A.
B.
C.
D.
CORRECT: B Manual J
Heat loss through a slab on grade floor and combustion air requirements in an older home being
met by infiltration are examples of:
I. Building losses.II. System losses.
I only
II Only
Both I and II
Neither I nor II
420
A.
B.
C.
D.
CORRECT: C Manual J
Heat loss through a slab on grade floor and
combustion air requirements in an older home being
met by infiltration are examples of:I. Building losses.
II. System losses.
I only
II Only
Both I and II
Neither I nor II
421
A.
B.
C.
D.
CORRECT: C Manual J
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When a garage is to be heated, the preferred system to
be used is:
zonal
central
baseboard
solar
422
A.
B.
C.
D.
CORRECT: A Manual J
When a garage is to be heated, the preferred system to be used is:
zonal
central
baseboard
solar
423
A.
B.
C.
D.
CORRECT: A Manual J
Which of the following best describes window 6?
casement
jalousie
sliding
basement
424
A.
B.
C.
D.
CORRECT: B Manual J
Which of the following best describes window 6?
casement
jalousie
sliding
basement
425
A.
B.
C.
D.
CORRECT: B Manual J
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Which of the following does not enter into the loss
calculation of a window or door?
glazing
material
color
size
426
A.
B.
C.
D.
CORRECT: C Manual J
Which of the following does not enter into the loss calculation of a window or door?
glazing
material
color
size
427
A.
B.
C.
D.
CORRECT: C Manual J
Storm windows and storm doors:I. Reduce infiltration losses
II. Reduce transmission losses
I only
II only
Both I and Ii
Either I or II
428
A.
B.
C.
D.
CORRECT: C Manual J
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Storm windows and storm doors:
I. Reduce infiltration lossesII. Reduce transmission losses
I only
II only
Both I and Ii
Either I or II
429
A.
B.
C.
D.
CORRECT: C Manual J
The formula:Q= 1.1 x CFM x TD
can be used to calculate:
I. Heat loss due to infiltration
II. Heat loss due to ventilation air
I only
II only
Both I and II
Neither I nor II
430
A.
B.
C.
D.
CORRECT: C Manual J
The formula:Q= 1.1 x CFM x TD
can be used to calculate:
I. Heat loss due to infiltrationII. Heat loss due to ventilation air
I only
II only
Both I and II
Neither I nor II
431
A.
B.
C.
D.
CORRECT: C Manual J
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Given: Supply air duct is encased in concrete below a
slab which has edge insulation with an R-valve of 6. If the supply air is below 120 degrees F, what is the
duct loss multiplier when the winter design
temperature is 16 degrees F?
.04
.05
.06
.07
432
A.
B.
C.
D.
CORRECT: B Manual J
Given: Supply air duct is encased in concrete below a slab which has edge insulation with an R-valve of 6.
If the supply air is below 120 degrees F, what is the
duct loss multiplier when the winter design temperature is 16 degrees F?
.04
.05
.06
.07
433
A.
B.
C.
D.
CORRECT: B Manual J
Given: OAT 10 degree; supply air temperature inside
duct is 122 degrees F; duct location is attic; duct
insulation is R2. What is the duct loss multiplier?
.2
.25
.3
.35
434
A.
B.
C.
D.
CORRECT: A Manual J
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Given: OAT 10 degree; supply air temperature inside
duct is 122 degrees F; duct location is attic; duct insulation is R2. What is the duct loss multiplier?
.2
.25
.3
.35
435
A.
B.
C.
D.
CORRECT: A Manual J
According to Manual J, ducts installed in attics and garages should be insulated:
I. With a recommended R6 insulation.
II. With a minimum of R4 insulation.
I only
II only
Either I or II
Neither I nor II
436
A.
B.
C.
D.
CORRECT: A Manual J
According to Manual J, ducts installed in attics and garages should be insulated:
I. With a recommended R6 insulation.
II. With a minimum of R4 insulation.
I only
II only
Either I or II
Neither I nor II
437
A.
B.
C.
D.
CORRECT: A Manual J
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Given: A frame wall with brick veneer, gypsum board
and 12-13 insulation has an area of 260 square feet. The indoor design temperature is 72 degrees F and the
outside design temperature is 15 degrees F. What is
the heat loss through this section of wall?
1040 Btuh
1144 Btuh
1248 Btuh
1352 Btuh
438
A.
B.
C.
D.
CORRECT: C Manual J and Table 2 (12-D)
Multiply the area of the wall by the HTM in table 2. NOTE: The TD was in between 55 & 60 degrees F. the
HTM for this problem is then found in the 60 degree column, or 4.8. 4.8 x 260=1248
Given: A frame wall with brick veneer, gypsum board and 12-13 insulation has an area of 260 square feet.
The indoor design temperature is 72 degrees F and the
outside design temperature is 15 degrees F. What is the heat loss through this section of wall?
1040 Btuh
1144 Btuh
1248 Btuh
1352 Btuh
439
A.
B.
C.
D.
CORRECT: C Manual J and Table 2 (12-D)
Multiply the area of the wall by the HTM in table 2. NOTE: The TD was in between 55 & 60 degrees F. the
HTM for this problem is then found in the 60 degree column, or 4.8. 4.8 x 260=1248
Refer to Manual J Figure 1-1. Use ACCA Manual J for
calculations. Excluding infiltration, ventilation, and
duct loss the heat loss for this house is ____ Btuh.
over 25,000
15,001-20,000
20,001-25,000
under 15,000
440
A.
B.
C.
D.
CORRECT: C Manual J Figure 1-1 and Figure 3-
3
Refer to line 12 of Figure 3-3. The infiltration load is 15,673 Btuh. Line 15 shows the total Btuh for the house
is 47,808 Btuh. There are no vetilation or duct losses therefore the heat loss for this house is the difference
betwee 47,808 - 15,673.
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AL HVAC Contractor Comprehensive Tutorial
Refer to Manual J Figure 1-1. Use ACCA Manual J for
calculations. Excluding infiltration, ventilation, and duct loss the heat loss for this house is ____ Btuh.
over 25,000
15,001-20,000
20,001-25,000
under 15,000
441
A.
B.
C.
D.
CORRECT: C Manual J Figure 1-1 and Figure 3-3
Refer to line 12 of Figure 3-3. The infiltration load is
15,673 Btuh. Line 15 shows the total Btuh for the house is 47,808 Btuh. There are no vetilation or duct losses
therefore the heat loss for this house is the difference betwee 47,808 - 15,673.
Refer to Manual J Figure 1-1. Use ACCA Manual J for calculations. Excluding infiltration, the heat loss
through the floor for this house is ____ Btuh.
under 1,000
1,001-1,750
1,751-2,500
over 2,500
442
A.
B.
C.
D.
CORRECT: D Manual J Figure 1-1, 2-10 and
Figure 3-3
Refer to Manual J Figure 1-1. Use ACCA Manual J for
calculations. Excluding infiltration, the heat loss
through the floor for this house is ____ Btuh.
under 1,000
1,001-1,750
1,751-2,500
over 2,500
443
A.
B.
C.
D.
CORRECT: D Manual J Figure 1-1, 2-10 and
Figure 3-3
Copyrighted by Greenview Enterprises 1997 - 2010 Page 147 of 276
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Refer to Manual J Figure 1-1. Use ACCA Manual J
for calculations. The winter infiltration load for this house is ____ Btuh.
under 20,000
20,001-23,000
23,001-26,000
over 26,000
444
A.
B.
C.
D.
CORRECT: A Manual J Figure 1-1, 2-14 and Figure 3-3
Refer to Manual J Figure 1-1. Use ACCA Manual J for calculations. The winter infiltration load for this
house is ____ Btuh.
under 20,000
20,001-23,000
23,001-26,000
over 26,000
445
A.
B.
C.
D.
CORRECT: A Manual J Figure 1-1, 2-14 and
Figure 3-3
Refer to Manual J Figure 1-1. Use ACCA Manual J for calculations. The ventilation heating load for this
house is ____ Btuh.
over 3400
1801-2600
2601-3400
under 1800
446
A.
B.
C.
D.
CORRECT: D Manual J Figure 1-1, 2-15 and
Figure 3-3
Copyrighted by Greenview Enterprises 1997 - 2010 Page 148 of 276
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Refer to Manual J Figure 1-1. Use ACCA Manual J
for calculations. The ventilation heating load for this house is ____ Btuh.
over 3400
1801-2600
2601-3400
under 1800
447
A.
B.
C.
D.
CORRECT: D Manual J Figure 1-1, 2-15 and Figure 3-3
Refer to Manual J Figure 1-1. Use ACCA Manual J for calculations. Excluding infiltration, the heat loss
for the ceiling is ____ Btuh.
6,001-7,000
5,001-6,000
under 5,000
over 7,000
448
A.
B.
C.
D.
CORRECT: B Manual J Figure 1-1, 2-9 and
Figure 3-3
Refer to Manual J Figure 1-1. Use ACCA Manual J for calculations. Excluding infiltration, the heat loss
for the ceiling is ____ Btuh.
6,001-7,000
5,001-6,000
under 5,000
over 7,000
449
A.
B.
C.
D.
CORRECT: B Manual J Figure 1-1, 2-9 and
Figure 3-3
Copyrighted by Greenview Enterprises 1997 - 2010 Page 149 of 276
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Use ACCA Manual J for calculations, refer to Figure 3-
1. Excluding infiltration, the heat loss through the windows for this house is ____ Btuh.
under 500
501-1,000
4,001-4,500
over 6,500
450
A.
B.
C.
D.
CORRECT: A Manual J Figure 3-1 and 3-3 Line 6
Use ACCA Manual J for calculations, refer to Figure 3-1. Excluding infiltration, the heat loss through the
windows for this house is ____ Btuh.
under 500
501-1,000
4,001-4,500
over 6,500
451
A.
B.
C.
D.
CORRECT: A Manual J Figure 3-1 and 3-3 Line
6
Use ACCA Manual J for calculations, refer to Figure 3-1. Excluding infiltration, the heat loss through walls
for this house is ____ Btuh.
over 15,000
6001-8,000
8,001-10,000
under 6,000
452
A.
B.
C.
D.
CORRECT: D Manual J Figure 3-1 and 3-3 Line
9
Copyrighted by Greenview Enterprises 1997 - 2010 Page 150 of 276
AL HVAC Contractor Comprehensive Tutorial
Use ACCA Manual J for calculations, refer to Figure 3-
1. Excluding infiltration, the heat loss through walls for this house is ____ Btuh.
over 15,000
6001-8,000
8,001-10,000
under 6,000
453
A.
B.
C.
D.
CORRECT: D Manual J Figure 3-1 and 3-3 Line 9
Use ACCA Manual J for calculations, refer to figure 3-1. Excluding infiltration, the heat loss through the
front door for this house is ____ Btuh.
501-700
under 500
701-900
over 900
454
A.
B.
C.
D.
CORRECT: D Manual J Figure 3-1 and Figure 3-
3 line 6
Use ACCA Manual J for calculations, refer to figure 3-1. Excluding infiltration, the heat loss through the
front door for this house is ____ Btuh.
501-700
under 500
701-900
over 900
455
A.
B.
C.
D.
CORRECT: D Manual J Figure 3-1 and Figure 3-
3 line 6
Copyrighted by Greenview Enterprises 1997 - 2010 Page 151 of 276
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Use ACCA Manual J for calculations, refer to figure 3-
3. The winter HTM for the exposed walls is _____.
between 60 and 80
between 25 and 50
less than 20
over 100
456
A.
B.
C.
D.
CORRECT: C Manual J Figure 3-3 line 9
Use ACCA Manual J for calculations, refer to figure 3-3. The winter HTM for the exposed walls is _____.
between 60 and 80
between 25 and 50
less than 20
over 100
457
A.
B.
C.
D.
CORRECT: C Manual J Figure 3-3 line 9
Given: A ceiling with an R-19 rating is below a vented attic. The outside design temperature is 10 degrees F
and the indoor design temperature is 70 degrees F.
What is the HTM?
5.3
3.4
3.2
2.9
458
A.
B.
C.
D.
CORRECT: C Manual J Table 2 (16-D)
Copyrighted by Greenview Enterprises 1997 - 2010 Page 152 of 276
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Given: A ceiling with an R-19 rating is below a vented
attic. The outside design temperature is 10 degrees F and the indoor design temperature is 70 degrees F.
What is the HTM?
5.3
3.4
3.2
2.9
459
A.
B.
C.
D.
CORRECT: C Manual J Table 2 (16-D)
Given: A sliding glass door, double pane with low "e" glass, metal frame, 6'-0" x 6'-8" dimension is installed
in a location that has a winter "TD" across the glass of
65 degrees F. What is the heat loss or Q for this door?
1242.18
1405.26
1260.72
1358.64
460
A.
B.
C.
D.
CORRECT: B Manual J Table 2 (8R)
the area of the sliding glass door is found by multiplying
6 x 6.7=42.2 square feet. The HTM (heat transmission multiplier) is 30.9 (from table 2). 42.2 x 30.9= 1242.18
Btuh
Given: A sliding glass door, double pane with low "e"
glass, metal frame, 6'-0" x 6'-8" dimension is installed
in a location that has a winter "TD" across the glass of
65 degrees F. What is the heat loss or Q for this door?
1242.18
1405.26
1260.72
1358.64
461
A.
B.
C.
D.
CORRECT: B Manual J Table 2 (8R)
the area of the sliding glass door is found by multiplying 6 x 6.7=42.2 square feet. The HTM (heat transmission
multiplier) is 30.9 (from table 2). 42.2 x 30.9= 1242.18 Btuh
Copyrighted by Greenview Enterprises 1997 - 2010 Page 153 of 276
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According to Manual J, a dwelling of 1600 square feet
of average construction and 3 fire places would have ____ winter air changes per hour, due to infiltration.
1.6
1.4
1.3
1.0
462
A.
B.
C.
D.
CORRECT: B Manual J table 5
According to Manual J, a dwelling of 1600 square feet of average construction and 3 fire places would have
____ winter air changes per hour, due to infiltration.
1.6
1.4
1.3
1.0
463
A.
B.
C.
D.
CORRECT: B Manual J table 5
What do you compare when you do your heat loss calculation?
highest day temp to lowest day temp
highest summer temp to lowest winter temp
indoor to outdoor temp
highest winter time temperature to lowest
winter time temperature
464
A.
B.
C.
D.
CORRECT: C Manual N
Copyrighted by Greenview Enterprises 1997 - 2010 Page 154 of 276
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Heat transfer through walls below grade and a
concrete slab is not a factor in a cooling load.
True
False
465
A.
B.
C.
D.
CORRECT: A MANUAL N
According to Manual N:I. Building orientation is important for cooling load
consideration
II. Building orientation is important for heat load
calculations
I only
II only
Both I and II
Neither I nor II
466
A.
B.
C.
D.
CORRECT: C Manual N
According to Manual N, occupancy analysis for a retail establishment would include all of the following
except:
Christmas season traffic
summer month activity
Easter season traffic
restaurant evening patrons
467
A.
B.
C.
D.
CORRECT: B Manual N
Copyrighted by Greenview Enterprises 1997 - 2010 Page 155 of 276
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All of the following effect a building's heat loss and
heat gain except:
construction details
physical dimensions
lighting
restroom facilities
468
A.
B.
C.
D.
CORRECT: D Manual N
According to Manual N, table 1 values are for ____ in July and August.
3 pm
3 am
6 pm
6 am
469
A.
B.
C.
D.
CORRECT: A Manual N
According to Manual N, outside design temperature for calculating heating loads are taken from the
ASHRAE weather data. These temperatures will be
exceeded for ____ % the winter heating hours.
2 1/2%
97 1/2%
2 %
98%
470
A.
B.
C.
D.
CORRECT: B Manual N
Copyrighted by Greenview Enterprises 1997 - 2010 Page 156 of 276
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Indoor comfort heating temperatures should be
designed:
between 68 degrees F and 77 degrees F
between 20% RH and 55% RH
to prevent frosting on eaves
to prevent condensation on glass
471
A.
B.
C.
D.
CORRECT: D Manual N
In door comfort cooling design temperatures should:
consider temperature, humidity and air velocity
consider temperature, activity and humidity
consider air velocity, humidity and solar
radiation
consider solar radiation, activity, humidity
472
A.
B.
C.
D.
CORRECT: A Manual N
Solar gain in a facility is affected by all of the following except:
amount of radiation incident on the glass
thermal storage of the buildings materials
type of glass
the area of the glass
473
A.
B.
C.
D.
CORRECT: C Manual N
Copyrighted by Greenview Enterprises 1997 - 2010 Page 157 of 276
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What is the solar heat gain of a clear (1/8") glass panel
3' x 4' in an office building of medium construction located 48 degrees north latitude at 6 pm. Consider no
shading.
196 Btuh
312 Btuh
336 Btuh
300 Btuh
474
A.
B.
C.
D.
CORRECT: B Manual N
The heat which is radiated through glass must be
included in the cooling load calculation. The radiatin gain can be calculated by the following formula.
Q = SHGF x SF x AQ = Solar heat gain for glass (Btuh)
SHGF = Solar Heat Gain Factor from Table 2 (Btuh/sq. ft.)
A = Area (sq. ft.) glass areaSHGH = 26 (for medium construction at 48 degrees
north latitude at 6 pm. See table 2A on pg. 63)SF = 1.00 (clear, see table 3 on pg. 65)
A = 3' x 4' = 12 sq. ft.Q = 26 x 1.00 x 12 = 312
Heat that is transmitted through glass must be:
I. Included in the heat loss calculationII. Included in the heat gain calculation
I only
II only
Both I and II
Neither I nor II
475
A.
B.
C.
D.
CORRECT: C Manual N
U-values for a building material:
I. Is the overall heat transmission coefficientII. Are the same for both heating and cooling
I only
II only
Bother I and II
Neither I nor II
476
A.
B.
C.
D.
CORRECT: C Manual N
Copyrighted by Greenview Enterprises 1997 - 2010 Page 158 of 276
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Heat gain from sources inside a building must be
calculated from all of the following except:
motors
people
furniture
appliances
477
A.
B.
C.
D.
CORRECT: C Manual N
According to Manual N, the design CFM for ventilation is determined by:
I. Addition of the fresh air requirement to the return
air loading
II either the fresh air requirement or the make-up air requirement
I only
II only
Both I and II
Neither I nor II
478
A.
B.
C.
D.
CORRECT: D Manual N
According to Manual N, which of the following statements are true:
I. Dehumidification occurs when air is cooled at or
above its dew point temperatureII. Humidification occurs when water is evaporated
into an air stream requiring approximately 1040 Btu
per pound of water
I only
II only
Both I and II
Neither I nor II
479
A.
B.
C.
D.
CORRECT: D Manual N
Copyrighted by Greenview Enterprises 1997 - 2010 Page 159 of 276
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According to Manual N, heat gain and heat loss
through ductwork located in an conditioned spaces:
can be ignored
can be appreciable
is negligible
can be calculated before duct is designed
480
A.
B.
C.
D.
CORRECT: B Manual N
According to Manual N, the outdoor summer design wet bulb temperature for Greensboro NC, is:
91
73
23
72
481
A.
B.
C.
D.
CORRECT: B Manual N
According to Manual N, the u-value of 4" block wall construction with exterior siding is: (assume no
insulation and sand and gravel mortar)
.182
.169
.159
.286
482
A.
B.
C.
D.
CORRECT: A Manual N
Copyrighted by Greenview Enterprises 1997 - 2010 Page 160 of 276
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A bridge construction is particularly hazardous, not
well-defined, and a train of cars will have to weave back and forth between one, two or more lanes.
Which is the best method of traffic control to use when
cars and trucks have to weave in and out of different lanes during a bridge construction that is particularly
hazardous.
Official flag car
Flagger control people
construction barrels
Pilot car
483
A.
B.
C.
D.
CORRECT: D Manual of Uniform Traffic
Control Devices 6C-5 c
What is a thermocouple ?
a safety device that generates electricity
several thermal expansion valves
a safety device
limit switch
484
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning
The pressure in an evaporator containing R-22
refrigerant is 60 PSIA. What is the saturated
temperature of the refrigerant?
45
34
53
29
485
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 161 of 276
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Where is the TXV located in the refrigeration system?
between the condenser & compressor
between the high pressure side and the low pressure side - OUTLET SIDE OF THE
EVAPORATOR
between the evaporator & compressor
on the discharge side of the compressor
486
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning
The most likely reason for a high pitched noise from a floor register is:
air hitting sharp metal edges
air velocity at the register is too low
a burr in the duct
restriction in the register fitting
487
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning
Which of the following types of solar collectors are the most popular in the United States?
ethylene glycol
caustic soda
drain down
passive
488
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 162 of 276
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When is it recommended to charge a refrigeration
system from the high side?
before starting the compressor
after starting the compressor
upon initial start up
not recommended
489
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning
A gas furnace has a yellow flame. Which of the following is true?
I. Could be caused by lack of primary air
II. Reset secondary air port and check flame color
I only
II only
both I and II
neither I nor II
490
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning
What indicates a lack of refrigerant in a TEV
installation?
unit shuts down
sight glass is clear
there is a knocking sound at the refrigerant
control
there is frost or sweat at the outlet of the
evaporator to the sensing bulb of the TEV
491
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 163 of 276
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When the specific ventilation requirement for a
building is not known, it is best to size the ventilation system based on ____ CFM per square foot of floor
area.
1
2
3
4
492
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning
What is the purpose of the access valve on a filter dryer?
change the core
allows the addition of refrigerant
adjust the pressure
allows the service tech to check the pressure
drop
493
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning
A solar water heating system uses a device to mix the
solar heated water with the cold water supply. This is
called:
mixing valve
tempering valve
motorized valve
flow control valve
494
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air
Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 164 of 276
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Superheat is heat added to a refrigerant ____.
in raising water temperature
after all the liquid has been changed to a vapor
in changing a liquid to a vapor
to increase pressure
495
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning
What instrument is used to test the strength of a brine solution?
tachometer
barometer
hydrometer
anemometer
496
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning
Which of the following refrigerants are possible replacements for R-12 and R-11?
123 and 501
134a and 501
134a and 123
R-22
497
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 165 of 276
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A 330 Kw electric heater will produce approximately
____.
1,102,390 Btu's an hour
1,023 Btu's an hour
204,780 Btu's an hour
2,457 Btu's an hour
498
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning
Solution: 330 KW = 333,000 watts
The term ___ indicates that portion of the refrigerant which evaporates instantly as it passes through the
refrigerant control orifice.
superheat
subcooling
flash gas
out gassing
499
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning
In a refrigeration system, the function of the condenser is to ____ the refrigerant has absorbed in the
evaporator.
absorb heat into
dissipate heat from
control
pump
500
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 166 of 276
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What is the name of the refrigerant system that has
two compressors with the discharge of one compressor going into the suction of the second compressor.
secondary
parallel
compound
cascade
501
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning
A refrigeration system has two compressors connected so they will operate at the same time. The evaporator
of the first system cools the condenser of the second
system. This is a ____ system.
secondary
parallel
compound
cascade
502
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning
When refrigerant is sub-cooled it is at a temperature
lower than its saturated temperature.
True
False
503
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air
Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 167 of 276
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The two types of fuel that a halide leak detector can
use are:
propane & acetylene
kerosene and acetylene
propane and kerosene
acetylene and hydrogen
504
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning
___ overload devices are the most common safety device for motor protection.
circuit breaker
bimetal switches
fuse
time-delay relay
505
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning
On a household refrigerator, the thermostat has three wires on it. Of these, one is a ground and one is the
power supply line connected to one of the thermostat
terminals. Where does the third wire go to?
the door switch
the compressor relay
the defrost timer
the mullion heater
506
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air
Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 168 of 276
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Of the following metering devices, which one is the
most widely used in today's household refrigerator's, freezers, air conditioners, dehumidifiers, and small
commercial applications?
high side float valve
automatic expansion valve
low side float valve
capillary tube
507
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning
The simplest type of domestic refrigerator uses which of the following methods of defrosting?
off time
hot gas
resistance heaters
reverse cycle
508
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning
Breaker strips, usually made of plastic, ___ used in a household refrigerator.
releases the ice into the hopper
connects the metal case of the freezer to the
outer shell
covers evaporator fan
moulds the cabinet hinges
509
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 169 of 276
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The electrical controls in a small refrigerator operate
at ____ volts.
48
12
24
120
510
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning
According to Modern Refrigeration and Airconditioning, the best method for joining copper
tubing in a refrigeration system to prevent leaks is:
threading
flaring
crimping
brazing
511
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning
The velocity pressure method of measuring air velocity uses an instrument called:
pitot tube
sono tube
ohmmeter
millimeter
512
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 170 of 276
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By adjusting a variable pitched pulley to make the belt
ride at the outer edge of the motor pulley instead of the shaft, the expected result would be:
fan speed decrease
fan speed increase
motor speed increase
motor speed decrease
513
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning
When a steady low pitched rumble travels along a duct system it is usually caused by:
fan and motor misalignment or imbalance
rapid expansion and contraction of the ducts
caused by temperature fluctuations
air inside the duct is hitting sharp edges
causing a harmonic vibration
air velocity inside the duct is too high
514
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air
Conditioning
Filter dryers used in refrigeration systems have access
valves used for:
adding refrigerant oil
recharging the system with refrigerant
reactivating the desiccant
measuring the pressure drop in the filter
515
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 171 of 276
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To prevent refrigerant from liquefying in the
compressor crankcase and being trapped in the refrigerant oil during cold weather it is sometimes
necessary to use a ____.
crankcase heater
low pressure cutout switch
heat exchanger
suction line accumulator
516
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air
Conditioning
According to Modern Refrigeration and Airconditioning, which one of the following type of
Stainless Steel is most often used when Stainless Steel
tubing is required for a dairy plant installation.
302
304
303
301
517
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning
According to Modern Refrigeration and
Airconditioning, a modulating gas regulator changes
the size of the gas flame size in response to the
temperature difference between the _______.
thermostat setting and bonnet control
thermostat setting and fan control
thermostat setting and room temperature
fan control and limit switch
518
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 172 of 276
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According to Modern Refrigeration and
Airconditioning, a modulating gas valve used in an electronically controlled gas furnace will start the
burners at about _____ % of capacity and then adjust
the flame.
50 - 80
30 - 60
40 - 70
20 - 50
519
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning
According to Modern Refrigeration and Airconditioning, a two-stage warm air furnace
combines two-stage heating with:
two stage air delivery
constant air circulation
variable air delivery
variable temperature delivery
520
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air
Conditioning
Which one of the following controls is designed to
shut off the compressor to protect it from possible
overloading and overheating?
low pressure control
head pressure control
evaporative fan control
condenser fan control
521
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 173 of 276
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Which one of the following controls is NOT normally
installed on a residential air conditioning condensing unit?
low pressure control
head pressure control
oil pressure control
condenser fan control
522
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning
Zero gauge pressure is equal to what pressure on the absolute pressure scale?
32 PSIA
14.7 PSIA
0 PSIA
9 PSIA
523
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning
In newer furnaces the _____ has been replaced by an electronic ignition system as an energy conservation
measure.
high limit control
gas burner control
thermocouple safety gas shut-off
pilot
524
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 174 of 276
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How many btu's are required to lower the temperature
of 3 lbs of water 2 degrees F. ?
2 Btu
5 Btu
4 Btu
6 Btu
525
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning
Solution: Btu = pounds of water X number of degrees F change. Btu = 3 X 2 = 6
Cleanliness of refrigerant tubing is always at the forefront of the technicians mind when cutting the
tube. To prevent contamination of the tube, the
technician should ____ before cutting the tubing.
wipe down the tubing with refrigeration oil
burn off any dirt on sludge with his torch
scrape the tubing with the reamer end of the tubing cutter to mark the end and then cut it
wipe down the tubing with rag and then clean
the tubing with emery cloth or steel wool
526
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning
According to Modern Refrigeration and
Airconditioning, the heat pump is best used for:
ventilation
heating
cooling
heating and cooling
527
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 175 of 276
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Which of the following compounds is used by the
compressor to operate an unloader?
electro-mechanical switch
oil
natural gas
LP gas
528
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning
Refer to the condensing unit wiring diagram. The compressor motor is "ON" when:
I. Switches 1 and 2 are closed
II. Switches 2 and 3 are closed
III. Switches 1 and 3 are closed
I only
II only
III only
both II and III
529
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning
Of the characteristics of a desiccant, ___ would be the
LEAST desirable.
replaceable core
chemical dryer
water soluble
refrigerant tolerant
530
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air
Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 176 of 276
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When warming a cylinder of refrigerant for charging,
___ degrees F should be considered to be the maximum temperature.
80
90
100
120
531
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning
According to Modern Refrigeration and Air-conditioning, the minimum cooling air changes per
hour is:
3
4
5
6
532
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning
According to Modern Refrigeration and Air-conditioning, when two pieces of soft copper tubing
are swaged, the overlap should be at least ____ pipe
diameters.
1/2
3/4
1
1 1/8
533
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air
Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 177 of 276
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According to Modern Refrigeration and Air-
conditioning, ___ would be a safe radius for a tubing bend.
15 times the radius
12 times the radius
8 times the radius
you should not bend tubing
534
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning
Use the following HVAC data to determine the round duct size to correctly handle the CFM required for
Rooms 1, 2, 5:
1. .1" friction loss per 100'
2. If sizing results in between sizes, use the next larger
10"
9"
8"
7"
535
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning
According to "Modern Refrigeration", additional
refrigerant oil should be added to a system if the
suction and liquid lines are not more than ___ feet
long.
30
20
25
15
536
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 178 of 276
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As the moisture content of the air surrounds an
electronic humidistat changes, the humidistat sensor changes its:
wattage
voltage
amperage
resistance
537
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning
A moisture indicator is installed in an air conditioning system. How much time is required to obtain an
accurate color signal?
1 hrs
4 hrs
6 hrs
8 hrs
538
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning
According to Modern Refrigeration and Air Conditioning, refrigeration service tubing for domestic
work is made from:
I. Soft copper for domestic use II. Hard drawn for commercial use
I only
II only
both I and II
neither I nor II
539
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 179 of 276
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Using the information in the picture, determine which
terminals will be wired.
Wire this thermostat only for heating, single stage, fan
operation auto run
RC, G, W
RH, G, W
RH, Y, G
Y, W, G
540
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning
Modern Refrigeration and Air Conditioning, the function of an external equalizing line in a in a
thermostatic expansion valve is:
compensates for any pressure loss through the
evaporator while the compressor is running
prevents excess refrigerant from entering the
evaporator
prevents liquid refrigerant from entering the
suction line
compensates for any pressure loss through the condenser while the compressor is running
541
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning
Which of the following sources of air should be used
to replace exhausted air in a building?
make-up
return
outside
exhaust
542
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air
Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 180 of 276
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A modulating gas valve is used in electronically
controlled gas furnaces. It changes the burner flame in response to the temperature difference between the
thermostat setting and the room temperature.
True
False
543
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air
Conditioning
A housing that contains a blower or fan for the purpose of distributing supply air to a room, space, or
area is called:
return air fan
exhaust fan
air handling unit
makeup air fan
544
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air
Conditioning
In a multiple evaporator unit refrigeration system,
individual suction lines are connected to a header.
According to Modern Refrigeration and Air
Conditioning, which of the following terms describes this installation?
cascade system
compound system
cryogenic system
manifold system
545
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 181 of 276
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A shell and tube condenser may also be used as a/an:
evaporator
receiver
oil separator
oil pump
546
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning
Which of the following components would be found in
an open-reciprocating type refrigeration compressor?
rotor
vane
impeller
piston
547
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning
What type of air is brought back from the conditioned space, reconditioned, and then sent back to the
conditioned space?
make-up
outside
return
supply
548
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 182 of 276
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What does a yellow pilot light on a furnace indicate?
dirty thermocouple
adjusted to produce a blue flame
unit shut-down and red-tagged
the flame OK
549
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning
A variable pitch pulley is adjusted so that the belt rides
at the top edge of the motor's pulley. What will happen when the motor is turned on?
the fan speed will increase
the fan speed will decrease
the motor speed will increase
the motor speed will decrease
550
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning
The moisture holding capacity of dessicant increases when:
head pressure decreases
at lower refrigerant temperatures
lower condensing pressures
increased refrigerant temperatures
551
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning
Copyrighted by Greenview Enterprises 1997 - 2010 Page 183 of 276
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An evaporative cooler is most efficient during days:
when the sky is overcast
of high humidity
of low humidity
when it is raining or storming
552
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air
Conditioning
The compressor in the picture is:
hermetic
screw
centrifugal
open type
553
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning
How does an evaporator remove moisture from the air?
evaporation of moisture in space
humidification of space
absorption of heat in space
super heated refrigerant
554
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air
Conditioning 1. 2
The boiling point of a liquid increases:
when its temperature is lowered
when the pressure is lowered
when more heat is added
when the pressure is increased
555
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning 1.19
Copyrighted by Greenview Enterprises 1997 - 2010 Page 184 of 276
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Heat transfer is by _______.
convection
all of these
radiation
conductivity and conductance
556
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning 1.26
Heat may be transferred by means of ____.
I. Convection II. Conduction
II only
neither I or II
Both I & II
I only
557
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning 1.26
If you heat one end of an iron bar, the other end is heated by ______ ?
radiation
conduction
convection
none of the these
558
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning 1.26.2
Copyrighted by Greenview Enterprises 1997 - 2010 Page 185 of 276
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Repeated bending of soft copper tubing is a sure way
too cause:
colloidal copper
annealing
work hardening
thermal quenching
559
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning 2.1.1
Hard drawn copper tubing is purchased in ___ foot lengths.
10
12
20
21
560
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning 2.1.1
The difference in sizes between nominal and outside diameter tubing is:
1/8"
1/16"
1/32"
1/64"
561
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning 2.1.1
Copyrighted by Greenview Enterprises 1997 - 2010 Page 186 of 276
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Type ___ copper tubing is used on flare fittings.
Type K soft drawn
Type L hard drawn
Type L soft drawn
Type K hard drawn
562
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air
Conditioning 2.1.1
Repeated bending of soft drawn copper tubing causes:
colloidal development
annealing
work hardening
thermal quenching
563
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air
Conditioning 2.1.1
Type ___ copper tubing should be used to flare
fittings.
Type K hard drawn
Type L hard drawn
Type K soft drawn
Type L soft drawn
564
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning 2.1.1
Copyrighted by Greenview Enterprises 1997 - 2010 Page 187 of 276
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Repeated bending of soft drawn copper tubing causes:
work hardening
annealing
colloidal development
thermal quenching
565
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air
Conditioning 2.1.1
According to Modern Refrigeration and Air
Conditioning, before copper tubing is flared, the flaring should be:
coated with Teflon
coated with refrigeration oil
coated with melted bee's wax
wire brushed
566
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning 2.3.1 (6)
What is the major difference between soldering and brazing?
the exposed surface area of the joint
The temperature at which the filler material
melts
weather or not the parent metal melts
the hardness of the filler metal
567
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning 2-20
Copyrighted by Greenview Enterprises 1997 - 2010 Page 188 of 276
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Which of the following terms describes oil at the
lowest point at which it will flow?
boil level
pour level
flash level
critical level
568
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning 2-73
The device in the air located between the compression hot gas outlet and the liquid line inlet is _______ ?
evaporator
condenser
TXV
metering device
569
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning 3- 7
A ___ type of refrigerating system that has two compressors with the discharge of one compressor
going to the suction of the second compressor.
cascade
compound
parallel
secondary
570
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning 3.11
Copyrighted by Greenview Enterprises 1997 - 2010 Page 189 of 276
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What is the name of the type of refrigerant system that
has two compressors with the discharge of one compressor going to the suction of the second
compressor?
secondary
cascade
parallel
compound
571
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning 3.11
Of the following refrigerant controls, ___ is a metering device.
capillary tube
solenoid valve
sensing bulb
high head pressure switch
572
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning 4.11.1
Compressors with cylinder unloaders should start:
unloaded
90% loaded
75% loaded
fully loaded
573
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning 4.24
Copyrighted by Greenview Enterprises 1997 - 2010 Page 190 of 276
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What is used to prevent refrigerant from liquefying in
the compressor crank case during cold weather?
low pressure cut-out switch
crankcase heater
heat exchanger
suction line accumulator
574
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning 4.27
___ is used to prevent refrigerant from liquefying in the compressor crank case during cold weather.
suction line accumulator
low pressure cut-out switch
heat exchanger
crankcase heater
575
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning 4.27
When liquid refrigerant passes through a metering device and suddenly changes to vapor, it is called:
liquefied gas
flash gas
solidified gas
compressed vapor
576
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning 4.5
Copyrighted by Greenview Enterprises 1997 - 2010 Page 191 of 276
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According to Code, a vibration isolator in an air
supply system, which is also known in the trade as a flexible connector, and, is installed between an air
handler and a duct system. The maximum length of a
vibration isolator is:
back-seating the suction service valve
front-seating the suction service valve
almost front-seating the discharge service
valve
almost front-seating the suction service valve
577
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning 4.7
When a refrigeration system is charged using the low
side method, proper system charging may be speeded
up by:
back-seating the suction service valve
front-seating the suction service valve
almost front-seating the discharge service valve
almost front-seating the suction service valve
578
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning 4.7
In a compression system the expansion valve is located
____
at the exit of the condenser
on the coil
at the exit of the evaporator
at the entrance of the evaporator
579
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning 4-20
Copyrighted by Greenview Enterprises 1997 - 2010 Page 192 of 276
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Which of the following is not a type of compressor
lubrication?
pressure system
splash
injector
force feed
580
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning 4-53
___ would only be seen in a cross charged thermostatic expansion valve.
vapor & moisture
liquid & vapor
moisture & oil
wax & vapor
581
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning 5.1.2
What does a thermostatic expansion valve that is cross charged contain?
liquid and gas
water and air
fluid different from the refrigerant in the
system
a thermal electric device used to sense the
temperature
582
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air
Conditioning 5.1.2
Copyrighted by Greenview Enterprises 1997 - 2010 Page 193 of 276
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What does a thermostatic expansion valve that is cross
charged contain?
liquid and gas
water and air
fluid different from the refrigerant in the
system
a thermal electric device used to sense the
temperature
583
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air
Conditioning 5.1.2
Identify the IC symbol used on internal and wiring diagrams for control systems.
transformer
transducers
capacitors
sparking cap
584
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning 6- 8
Using the information shown in the diagram, identify the symbol.
test fitting
resistor
capacitor
motor
585
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning 6- 9
Copyrighted by Greenview Enterprises 1997 - 2010 Page 194 of 276
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What is the purpose of an ammeter?
current flow control
check the current flow
measures the watts consumed by an electrical device
measures units of electromotive force
586
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning 6-14
According to Modern Refrigeration and Airconditioning. a circuit with too much current flow
has an excess. This excess is converted to what form
of energy?
watts
heat
amp
current
587
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning 6-29
What type of motor does NOT need an external start switch?
capacitor-start
capacitor-run
induction-run
impedance-run
588
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning 7- 2f
Copyrighted by Greenview Enterprises 1997 - 2010 Page 195 of 276
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What should happen when you jumper across the
starting capacitor on a motor ?
rupture the capacitor
blow the internal fuse
both of these
none of these
589
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning 7-40
The chemical formula for refrigerant R-12 is ____.
CHCLF2
F2L2
CHCL3
CCL2F2
590
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning 9- 1
What is the saturation psig of R-12 at 110 degrees F?
131.86
137.9
117.16
183.4
591
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning 9- 5f
Copyrighted by Greenview Enterprises 1997 - 2010 Page 196 of 276
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Sulfur Dioxide is a fairly stable refrigerant and is ____.
flammable
toxic
explosive
irritating
592
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning 9-15
Normally, in a refrigerating system, the refrigerant
will be ____ degrees F colder than the evaporator temperature when the unit is running.
10
15
18
5
593
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning 9-29
Moisture in a refrigeration system will cause _______ ?
freezing up the metering device
all of the these
break down of the insulation on the motor
windings
chemical changes in the oil
594
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning 9-33
Copyrighted by Greenview Enterprises 1997 - 2010 Page 197 of 276
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What color flame does a halide leak detector give off
in the presence of hydrocarbons.
Red
Yellow
Blue Green
white
595
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning 11-43
To charge a system with vapor you must connect a cylinder to the ___.
evaporator
liquid line
discharge line
suction line
596
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning 11-46
The effect of sub-cooling is _______ ?
increases the sensible cooling effect in a refrigeration process
decrease the overall efficiency of the total
refrigeration process
increase the overall efficiency of the total
refrigeration process
decreases the sensible cooling effect in a
refrigeration process
597
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air
Conditioning 12- 3
Copyrighted by Greenview Enterprises 1997 - 2010 Page 198 of 276
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The electronic leak detector carries a 1-B, CD rating,
and therefore may saftly be used in areas containing explosive or flamable vapors.
True
False
598
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning 12.9.2
NOT to Be used in areas containing explosive or
flamable vapors
Evaporators operating between 20 and 32 degrees F must frequently be ____.
purged
defrosted
painted
repaired
599
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning 12-27
Contactors are used ____.
instead of manual switches
because they are low cost
to replace controls
because of heavy electrical load
600
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning 12-42
Copyrighted by Greenview Enterprises 1997 - 2010 Page 199 of 276
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When an oil separator is used in a low temperature
application it should be kept in a cool place for best performance.
True
False
601
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning 12-55
According to Modern Refrigeration and Airconditioning, the metering, two temperature valve
acts more like a ____ than a shut-off valve.
throttling device
modulating valve
flow control device
check valve
602
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air
Conditioning 13.10.1
Cooling tower water is circulated to prevent what kind of buildup?
algae
scale
chloride buildup
static pressure
603
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning 13.3.7
Copyrighted by Greenview Enterprises 1997 - 2010 Page 200 of 276
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According to Modern Refrigeration and
Airconditioning, panels for prefabricated walk-in boxes use ____ to secured to each other.
partition panel locks
eccentric cam fasteners
stainless steel clamps
spring steel clamps
604
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning 13-7f
The Ph scale is 1 - 14. Which of the following numbers represents an acidic condition?
6
7
8
9
605
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning 14-53
The purpose of a filter dryer in a refrigeration line is:
keeps the evaporator defrosted
removes excess oil from the refrigerant
keeps the condenser coils defrosted
removes moisture from the refrigerant
606
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning 15.13.3
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How is a dryer used in a refrigeration system?
removes moisture from the refrigerant
removes excess oil from the refrigerant
keeps the condenser coils defrosted
keeps the evaporator defrosted
607
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air
Conditioning 15.13.3
According to Modern Refrigeration and
Airconditioning, after city water is circulated through an evaporative cooling system approximate _____
times it must be bled off or treated to prevent scale.
2
4
6
8
608
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air
Conditioning 15.14.13
According to Modern Refrigeration and Airconditioning, when winterizing and draining a
refrigeration system, the condenser water system and
other shut downs, all of the following plugs should be removed except:
condenser circulating pump drain
condenser shell drain
tower sub drain
refrigerant crankcase oil drain
609
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning 15.14.4
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According to Modern Refrigeration and
Airconditioning, a drain line for a cooling tower should be installed with a pitch of ___ inches per foot,
or a pump should be installed to lift the condensate to
its discharge location.
1/16
1/8
1/4
1/2
610
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air
Conditioning 15.14.4
When first charging a commercial refrigeration system, which side of the system is refrigerant vapor
introduced?
mechanical room side
high pressure side
compressor side
low pressure side
611
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning 15.9
Caution must be exercised when charging a unit with
refrigerant using the low side method. If the suction
pressure is too low it mat cause:
overwork the compressor
oil pumping
flash gas
the refrigerant cylinder to act as a condenser
612
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning 15.9
Copyrighted by Greenview Enterprises 1997 - 2010 Page 203 of 276
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According to Modern Refrigeration and
Airconditioning, the method recommended to charge a system with refrigerant is:
liquid refrigerant into the low side
liquid refrigerant into the high side
refrigerant vapor into the low side
refrigerant vapor into the high side
613
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning 15.9
When a refrigeration system is charged using the low side method if the suction pressure is to low, it may
cause:
the compressor to pump oil
rapid condensation of the refrigerant in
evaporator
rapid evaporation of the refrigerant in
condenser
the refrigerant cylinder to collapse
614
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air
Conditioning 15.9
When a refrigeration system is charged using the low
side method, if the suction pressure is too low, it may
cause:
rapid evaporation of the refrigerant in
condenser
rapid condensation of the refrigerant in
evaporator
the compressor to pump oil
the refrigerant cylinder to collapse
615
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning 15.9
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What is a dry evaporator designed for ?
systems which require a low RH in the room
being cooled
a system where water surrounds the
evaporator
a system where air is to be blown over the
evaporator
systems which require a high RH in the room
being cooled
616
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air
Conditioning 15-18
A flooded type evaporator has excellent heat transfer efficiency because ____.
the thinner the fluid the lesser the heat flow
the denser the fluid the lesser the heat flow
the thinner the fluid the greater the heat flow
the denser the fluid the greater the heat flow
617
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning 15-20
To achieve low temperature in refrigeration applications, cascade systems are used. They may be
connected in series.
True
False
618
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning 15-36
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Cascading refrigeration systems connect two or more
refrigeration systems.
True
False
619
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning 15-36
As condensing pressures approach the outlet temperature of the compressor, what will you expect to
experience?
all of these
an increase in flash gas
the compressor will pump to the higher
temperature and pressure
added loss in effective latent heat
620
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning 15-44
Which of the following is used to determine compressor displacement?
all of these
RPM
diameter of the cylinder
length of the piston stroke
621
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning 15-47
Copyrighted by Greenview Enterprises 1997 - 2010 Page 206 of 276
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Clearance in a compressor has no effect on ____.
compressor capacity
varies depending on compressor speed
has an effect on compressor capacity
varies depending on piston size
622
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air
Conditioning 15-47
A compressor's displacement is determined by ____.
all of these
diameter of the cylinder
length of stroke of the piston
number of pistons
623
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air
Conditioning 15-47
The COP of a hot water HVAC system is 1.58. The
input of the system is 62,000 Btu. What is the output of the HVAC system?
160,00 Btu
28.6 KW
62,000 Btu
150,000 KW
624
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning 15-49
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When charging a refrigerant system using the low side
method, PROPER system charging may be sped up by:
almost front-seating (closing) the suction service valve
closing the suction service valve
almost closing the discharge service valve
opening the suction service valve
625
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air
Conditioning 15-9
Where does cooling tower water go after it leaves the cooling tower?
condenser
evaporator
compressor
generator
626
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning 16.13.2
Relative humidity can be described as the ratio of water vapor in the air compared to the maximum
amount of water vapor that the air can contain at a
given temperature and pressure.
True
False
627
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air
Conditioning 18- 5
Copyrighted by Greenview Enterprises 1997 - 2010 Page 208 of 276
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Human comfort requires a relative humidity of about
____.
40 %
50 %
10 %
20 %
628
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning 18-32
The stratification of air can be avoided by ____.
larger return air grilles
larger diffusers
the lowest possible position of return air grilles
sufficient air flow
629
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning 18-46
A radial flow fan is one in which ____.
the air flows at right angles to the axis
the air flow is parallel to the axis
is a power type fan
is a slow speed fan
630
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air
Conditioning 22-26
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A 6" diameter duct will carry 50 CFM with a pressure
drop of ____ "per 100' of duct length.
.034
.013
.02
1.023
631
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning 22-34f
6000 CFM of air with a velocity of 1500 FPM will have a friction loss of ____ per 100' of duct length.
.15 inches of water
1 inches of water
.1 inch of water
.02 inches of water
632
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning 22-48f
6000 CFM of air with a velocity of 1500 FPM will have a friction loss per 100 feet of duct of ____ inches
of water.
.02
1
.15
.1
633
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning 22-48f
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According to Modern Refrigeration and
Airconditioning, the minimum number of air changes per hour for ventilation in a residence during th e
heating season is 3.
True
False
634
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air
Conditioning 23.3
If a high sounding noise is coming from a ceiling diffuser, and, the noise stops when the diffuser is
removed, the cause of the noise problem is:
restricted fitting in the duct
air velocity too low
sharp edges on the diffuser
sharp exposed edge in the duct
635
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air
Conditioning 23.5.1
Which of the following statements about heat pumps is
true?
the reversing valve never operates while the
system thermostat is set on heating
the most effective method to defrost the
outside coil is to reverse the system to the
cooling cycle
an accumulator is not necessary
when the outside air temperature drops below
freezing, all the heat is supplied by the
electric strips
636
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning 23-10
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Before pre-charged refrigerant lines are installed,
fittings should be coated with:
refrigerant oil
with leak-lock
with Teflon tape
fittings should never be coated
637
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning 24.10.2
The gas fired portions of a roof mounted heating/cooling units, usually uses a electronic
ignition for a gas pilot.
True
False
638
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning 24.19
What is the purpose of a lockout relay?
senses changes in temperature in the heated space
prevent system from being opened by a non-EPA certified technician
protect the compressor when a safety device
opens
turns the condenser fan off in the event of
insufficient air flow across the
evaporator coil
639
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air Conditioning 25-20
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A motor for operating dampers uses power to open the
damper works against ____ and holds the damper open until the set point is reached.
spring pressure
pneumatic pressure
gravity
inertial pressure
640
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning 25-36
When the high-pressure gauge of a gauge manifold is firmly installed on the high side of a refrigerant
system, the dial scale may be graduated in ____
increments.
2.5 #
1.5 #
1.2 #
2 #
641
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning 2-56
In determining heat gain for a structure, which of the
following must be considered?
the summer outside design temperature
all of these
radiation from the sun
heat and moisture gained by infiltration
642
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning 26- 4
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Internal heat gains of a space may consist of the
following:
lights
people
copy machine
all of these
643
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning 26- 4
The "R" value of a substance is a measure of ____.
Conductivity
Thermal transmittance
Conductance
Resistance
644
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning 26- 8
According to Modern Refrigeration and Airconditioning, which one of the following describes
what may cause a lockout relay to energize on a warm
air heating system?
contacts on the thermostat open
contacts on the motor protector open
contacts on automatic pilot close
contacts on the fan control close
645
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning 26.13.2
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A lock out relay will energize in a warm air heating
system if the contacts:
close on the motor protector
open
close
open on the motor protector
646
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning 26.13.2
Which of the following is defined as a series of operating controls used in a pre-set order to stop or
start a heating unit?
primary controls
sequencing controls
secondary controls
staging controls
647
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning 26.15
The specific heat of ice is ___.
.504
57.5
1.00
5.04
648
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning 30- 3
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What is the specific heat of ice?
.504 Btu per pound
.999 Btu per pound
143.5 Btu per pound
.5 Btu per pound
649
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air
Conditioning 30- 3
What is the Btu value of ice?
.999 Btu per pound
.504 Btu per pound
.555 Btu per pound
143.5 Btu per pound
650
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning 30- 3
If an electric heater is rated at 30 KW, how many Btu
per hour output is the heater?
2,457
1,023
204,780
102,420
651
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning 30- 5
Copyrighted by Greenview Enterprises 1997 - 2010 Page 216 of 276
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One pound of water has ____ grains.
700
7
70
7000
652
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning 30-14
A temperature is listed as 35 degrees Celsius. What is
the degrees in Fahrenheit degrees?
95
35
67
105
653
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning 30-16
Entropy is the engineering calculations for the power required for compression.
True
False
654
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning 30-21
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Total resistance is equal to the sum of individual
resistances.
True
False
655
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning 30-31
What are the proper installation locations for two refrigerant connections used for a dual pressure motor
control?
compressor suction and receiver king valve
outlet
liquid line receiver outlet and compressor
suction
liquid line and compressor discharge
compressor suction and discharge service
valves
656
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air
Conditioning 5-28 Figure
Why is it necessary to be cautious when handling
contaminated refrigeration oil?
it is a controlled substance according to the
DEA
it may be acidic
it may be alkaline
it may stain your clothes
657
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning 9.21
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Which of the following is most closely related to 1 ton
of refrigeration.
12,000 BTU'S
British thermal unit
50 degrees or above
Refrigeration ratings
658
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning Definitions B 1045
Which of the following is NOT a basic type of condenser?
Air-cooled
Refrigerated
Evaporated
Water Cooled
659
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning Definitions C
How is density expressed?
rpm
psi
pounds per cubic feet
pounds
660
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air
Conditioning Definitions D
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Enthalpy is ____.
sensible heat loss
the total heat content of a substance
latent heat of a substance
none of these
661
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air
Conditioning Definitions E
Enthalpy is the total amount of heat in one pound of a
substance calculated from accepted temperature base.
True
False
662
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning Definitions E
Heat exchangers are used in process heating and cooling.
True
False
663
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air Conditioning Definitions H
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Define the term hermetically sealed.
air leakage on jalousy window
degree of penetration of silicone caulking
closure between aluminum glassing and casement
traps air between sheets of glass
664
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air
Conditioning Definitions H
There are two latent heats for each substance.
melting and condensing
freezing and condensing
melting and freezing; and vaporizing and condensing
vaporizing and condensing
665
A.
B.
C.
D.
CORRECT: C Modern Refrigeration and Air
Conditioning Definitions L
A reciprocating pump is a pump having a(an) ____ moving up and down or back and forth.
scroll
pump rod
impeller
piston
666
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning Definitions P
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The relationship between water vapor present in air to
the greatest amount possible at a given temperature is termed ____.
humidity ratio
density
humidity index
relative humidity
667
A.
B.
C.
D.
CORRECT: D Modern Refrigeration and Air Conditioning Definitions R
A super heated gas may be defined as a gas where no liquid is present.
True
False
668
A.
B.
C.
D.
CORRECT: B Modern Refrigeration and Air Conditioning Definitions S
A thermister is _______ ?
a device whose resistance changes in response to a change in temperature
a thermostat with a resistor inside
two thermostats wired in series
a device used in VAV air distribution systems
669
A.
B.
C.
D.
CORRECT: A Modern Refrigeration and Air
Conditioning Definitions T
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If a fatal accident occurs on the job, it must be
reported to OSHA within ____ hours.
3
6
8
12
670
A.
B.
C.
D.
CORRECT: C OSHA
According to OSHA, what is potable water?
any water carried in a container
water that is fit for drinking
water that is transported to a job site
water that is used in concrete mix design
671
A.
B.
C.
D.
CORRECT: B OSHA
An OSHA poster:
Must be continuously displayed in the work
place
Is the standard guideline for inspection
procedures
Must be prepared within 36 hours of any
occupational or illness
Must be prepared directly after Form 100 and
submitted to the registrar of contractors
672
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1903.2 (a)(1)
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Kit Carson Construction Company is expanding its
work force. How many employees must Kit Carson Construction have before it must maintain records of
all employee occupational injuries and illnesses?
10
11
12
13
673
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1904.1 (a)(1)
According to OSHA, a safety log shall be available for inspection at all times. Within how many calendar
days must any new posting to the log be completed?
5 days
4 days
7 days
3 days
674
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1904.29 (b)(3)
If the contractor's employee is under the day-to-day supervision of the ____ , the ____ is responsible for
recording the injury or illness.
contractor, employee
contractor, contractor
employee, contractor
employee, employee
675
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1904.31 (b)(3)
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Federal OSHA requires employers to post an annual
summary of occupational injuries and illnesses. This summary shall be posted for at least 30 days. When
must this summary be posted?
December 1st
January 1st
February 1st
June 1st
676
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1904.32 (b)(6)
If an employee has a work related accident in 1998 what is the earliest year which a company may destroy
any record of this accident?
2000
2001
2002
2003
677
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1904.33 (a)
Note: Records are required to be kept for five years.
When workers are subject to contaminates that are less than 2 microns in diameter and, the contaminate is
considered dangerous to health, which of the following
must be provided?
air purifying respirator with a filter certified for particulates
half mask respirator with chemical cartridge
half mask respirator with particulate filter
half mask respirator without filter cartridge
678
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1910.134 (d) (3)
(iv) (C)
NOTE: 1 micron equals 1 micro meter
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According to OSHA, and oil lubricated compressor is
being used to supply breathing air. It must be equipped with:
I. High temperature alarmII. Carbon dioxide alarm
III. Carbon monoxide alarm
I only
I and II
II and III
I and III
679
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1910.134 (i)(7)
According to OSHA, safety-toe footwear for employees
shall meet the specifications of the:
American Industrial Standards Council
(AISC)
American Society of Mechanical Engineers
(ASME)
American Society of Testing Materials (ASTM)
American National Standards Institute (ANSI)
680
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1910.136 (b)(1)
According to OSHA, how many bathrooms are
required for ninety (90) construction workers?
3
5
7
9
681
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1910.141 (c)(1)(i)
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According to OSHA, ___ is the acceptable oxygen
level range in a confined space.
19.5% to 23.5%
23.6 to 26.5
26.5 to 28.1%
28.2 to 32.1%
682
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1910.146 (b) Hazardous Atmosphere (3)
All of the following are major components of a quadruple sling EXCEPT:
master link
chocker hitch
master coupling link
sling hook
683
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1910.184 figure N-184-3
According to OSHA, a circular saw may not be equipped with a locked-on control button on the power
switch.
True
False
684
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1910.243 (a)(2)(i)
& (ii)
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According to OSHA, all tube and coupler scaffolding,
shall be securely guyed or tied to the building or structure at intervals not exceeding ____ feet
horizontally, or ____ feet vertically.
25, 30
25, 25
30, 26
30, 30
685
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1910.28 (c)(13)
The minimum clearance between a backhoe (or other heavy equipment) and a 50 KV power line shall be
____ .
8'
10'
15'
12'
686
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1910.333 (c)(3)(iii)
Suspension wire rope shall be inspected by a competent person for visable defects and gross damage
to the rope:
once a day
after every use
before every use
weekly
687
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1910.66 (g)(5)(ii)
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Employees shall not use any spiral stairways that will
not be a permanent part of the stucture on which construction work is being performed.
True
False
688
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1920.1051 (a)(1)
Using the diagram and the following information, according to OSHA, determine the maximum
allowable depth of "A".
1. C is a 1:1 slope
2. simple trench 3. type "B" soil
20'
22'
24'
26'
689
A.
B.
C.
D.
"C"
"A""B"
CORRECT: A OSHA 29 CFR 1926 Subpart P Appendix B 1.2, 3
According to OSHA, referring to the diagram shown,
when "A" equals 20' in a simple trench, type "C" soil,
what is the maximum slope at "C" :
1½:1
⅞:1
2½:1
⅔:1
690
A.
B.
C.
D.
"A""Type C"
"C"
CORRECT: A OSHA 29 CFR 1926 Subpart P
Appendix B Table B-1
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According to OSHA, when trenching in Type A soil,
the minimum size douglas fir timber used for bracing for a trench which is 6' deep and 24" wide is:
4 x 4
4 x 6
6 x 6
6 x 8
691
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926 Subpart P Appendix C Table C-2.1
According to OSHA, a trench wall made of what soil type will can be excavated with vertical sides and
remain intact while exposed?
Stable rock walls
Heavy clay walls
Any trench under 6'
Loose rock walls
692
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926 Subpart P,
Appendix A, definition of stable rock.
According to OSHA, a trench wall made of Type
_____ cohesive soil has an unconfined compressive
strength of 1.5 tons per square foot or greater.
A
C
E
G
693
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926 Subpart P,
Appendix A, definition of type A soil.
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According to OSHA, ___ is specifically prohibited as a
hearing protection device.
expandable foam
ear muffs
cotton
hearing & head protection combination
helmets
694
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.101 (c)
Money to purchase eye protection required by OSHA comes from:
the OSHA mandated equipment fund
the state mandated equipment fund
employer
employee
695
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.102 (a)(1)
According to OSHA, what is the maximum developed length in feet of a lanyard safety line?
2
4
6
8
696
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.104 (d)
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According to OSHA, the a safety lanyard shall be a
minimum thickness of ____ inch, nylon or equivalent.
1/2
3/4
1
1 1/4
697
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.104 (d)
According to OSHA, what is the maximum developed length in feet of a lanyard safety line ?
2
4
6
8
698
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.104 (d)
Safety nets shall be provided when the work surface is more than ___ above the ground or water surface.
5
10
15
25
699
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.105 (a)
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At what height does OSHA require the use of a safety
net if a safety lanyard cannot be attached to a secure point?
8'
12'
25'
30'
700
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.105 (a)(1)
Mesh size of safety nets shall not exceed:
4" X 4"
6" X 6"
8" X 8"
8" X 6"
701
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.105 (d)
The temporary stairs on a job site should have landing every ____ feet or less of vertical height.
8
10
12
16
702
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.1052 (a)(1)
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According to OSHA, temporary stairs on a jobsite
shall have landings every ____ feet of vertical height.
8
10
12
16
703
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.1052 (a)(1)
A Type 1A metal or plastic self supporting portable extra heavy duty ladder, shall be capable of sustaining
a load without failure that is at least____ the
maximum intended load:
2.6 times
3.0 times
3.3 times
4.5 times
704
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.1053 (a)(1)(i)
Wood ladders are permitted to be coated with an opaque covering.
True
False
705
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.1053 (a)(12)
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According to OSHA, what minimum distance must be
unsecured ladder extend above an eave?
2'
3'
4'
5'
706
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.1053 (b)(1)
According to OSHA, a ladder leaned against a wall, the top of which is 20' above grade, must be ___ feet
from the wall at the base.
3
4
5
6
707
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.1053 (b)(5)(i)
20' ÷ 4= 5' (therefore 1/4 of the distance)
Asbestos standards apply when material containing more than ___ % is involved in construction
demolition or transportation activities.
.5
1
1.5
2
708
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.1101 (a)(1),
(a)(6) & (b)
Definition of Asbestos-Containing Material
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What is the maximum amount of asbestos that can be
allowed on a permissible level of exposure based on an eight hour time weighted average?
.10 fibres per cubic centimeters of air
.15 fibres per cubic centimeters of air
.20 fibres per cubic centimeters of air
.25 fibres per cubic centimeters of air
709
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.1101 (c)(1)
According to OSHA, the travel distance the nearest fire extinguisher should not be more than ____ feet.
75
100
150
200
710
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.150 (c)
A fire extinguisher rated at 2A shall be provided for each 3000 ft of protected building area. According to
OSHA the travel distance from any point of the
protected area to the nearest fire extinguisher shall not
be more than ___ feet.
65
75
100
150
711
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.150 (c)
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A multi-purpose ABC dry chemical fire extinguisher
is listed for: I. A fire classification
II. B fire classification
III. C fire classification
I only
II and III only
I, II and III (all three)
III only
712
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.150 Table F-
1
According to OSHA, portable tanks used for storage of flammable liquids shall be placed at least how far from
any building?
5'
10'
15'
20'
713
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.152 (c)(1)
A vehicle carrying flammable materials must have a
___ fire extinguisher on board (according to OSHA).
I. 20-B:C
II. 20-A:B
I only
II only
Neither I nor II
Either I or II
714
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.152 (d)(4)
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According to OSHA, all vehicles transporting
flammable or combustible liquids, shall be provided with at least one fire extinguisher having a rating of
not less than ____.
20-A
20-B
20-B:C
20-B:D
715
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.152 (d)(4)
When operational requirements make portable use of LP-Gas containers necessary, and their location
outside of buildings or structures is impractical, said
containers are permitted to be used inside of a building
or structure in accordance with all of the following EXCEPT:
regulators shall be either directly connected to
the container valves or to a manifold
connected to the container valves
aluminum piping or tubing shall be used
hose shall be designed for a working pressure
of at least 250 p.s.i.g.
Portable heaters shall be equipped with an
approved automatic device to shut off the flow
of gas to the main burner in the event of a flame failure
716
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.153 (h)(1)
According to OSHA, The prime contractor on a
construction project has the responsibility for compliance with OSHA standards for all employees on
the project.
True
False
717
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.16
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Danger signs shall be used only where a(n) _____
hazard exists.
potential
immediate
imminent
likely
718
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.200 (b)(1)
According to OSHA 1926, which of the following is not defined as a confined or enclosed space?
process vessel
trench less than 4' deep
boiler
air return duct
719
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.21 (b)(6)(ii)
According to OSHA, materials stored inside buildings at a construction site shall not be placed within ___
feet of any hoistway or floor opening.
3
4
5
6
720
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.250 (b)(1)
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Brick stacks shall not be more than ____ feet in height.
5
6
7
8
721
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.250 (b)(6)
Bricks shall not be stacked more than 7 feet in height.
When a loose brick stack reaches a height of 4 feet, in shall be tapered back ____ of height above the 4 foot
level.
1 inch in every 3 inches
2 inches in every 6 inches
2 inches in every foot
4 inches in every foot
722
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.250 (b)(6)
Eyes in wire rope bridles, slings or bull wires shall not be formed by wire rope clips or knots.
True
False
723
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.251 (c)(4)(iii)
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According to OSHA, what is the maximum distance
that waste materials may be dropped off from a roof without the use of totally enclosed chute?
16'
20'
28'
48'
724
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.252 (a)
According to OSHA, when debris is dropped through a hole in the floor without the use of a chute, the area
onto which the material is dropped shall be completely
enclosed by a barricade not less than _____ high and
not less than 6 feet back from the opening above.
36"
42"
48"
52"
725
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.252 (b)
The area onto which debris material is dropped through holes in the floor without the use of chutes,
shall be completely enclosed with barricades to
provide what minimum clearance back from the opening above?
6'
8'
10'
12'
726
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.252 (b)
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Which one of the following is responsible for
requiring the wearing of personal protective equipment when hazardous conditions exist?
foreman
employee
employer
superintendent
727
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.28 (a)
According to OSHA, the person responsible to insure that appropriate personal protective equipment (PPE)
is worn in every operation where exposure to
hazardous conditions exists is:
foreman
employee
employer
superintendent
728
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.28 (a)
According to OSHA, the ____ is responsible for making sure each employee coming onto a worksite is
wearing her personal protective equipment.
employee
OSHA inspector
city safety inspector
employer
729
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.28 (a)
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According to OSHA, which of the following power
tools MAY HAVE a "positive on/positive off" switch?
router
circular saw
4" diameter grinder
chain saw
730
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.300 (d)
According to OSHA, all of the following power tools require a "positive on/positive off" switch, EXCEPT:
circular saw
scroll saw
router
grinder with a 2" wheel or less
731
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.300 (d)
According to OSHA, hand held power tools such as skill saws, chain saws and power tools without
positive accessory holding means, shall have a _____
that shall shut off the power when the pressure is
released.
momentary contact on/off control
constant pressure switch
positive on/off control
dead-man release
732
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.300 (d)(3)
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According to OSHA, extension cords for use with
portable electric tools must:
be at least 2 wire if the tool is double insulated.
two wired with 3 prong plugs.
have the same number of wires as the tool connected.
be 3 wired type.
733
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.302 (a)
A pneumatic nail gun is equipped with an automatic fastener feed. The nail gun does not have a safety
device on the muzzle to prevent the ejection of nails
when the muzzle is not in contact with the work
surface. What is the maximum operating pressure allowed?
95 PSI
100 PSI
105 PSI
110 PSI
734
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.302 (b)(3)
29 CFR 1926.302 (b)(3) states that a safety device on
the muzzle is required for a pneumatically driven nailer with an automatic fastener feed that operate at more
than 100 p.s.i.
According to OSHA, the ___ paint spray system
requires the use of a nozzle tip guard.
DFRT
HVLP
airless
electrostatic
735
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.302 (b)(8) &
(b)(9)
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Powder actuated fastening devices may NOT be used
in face brick, hardened steel, or cast iron.
True
False
736
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.302 (e)(7)
According to OSHA, all woodworking power tools shall be equipped with all of the following EXCEPT:
a work rest
the operating speed etched on the motor of a
circular with a 20" diameter blade
automatic feeding devices when the nature of the work will permit
guards above and below the base plate or shoe
737
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.304 (b), (c)
& (d)
According to OSHA, a person who is capable of identifying existing and predictable hazards,
unsanitary working conditions and is authorized to
take corrective actions to eliminate them is a:
state inspector
qualified person
contractor
competent person
738
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.32 (f)
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According to OSHA, corrective action to eliminate
existing and predictable hazards and unsanitary working conditions can be performed by:
the prime contractor
competent person
industrial inspector
any project manager
739
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.32 (f)
Hot electrode holders shall not be dipped in water; to do so may expose the operator to:
cancerous vapors
dangerous bursts of steam
radiation
electrical shock
740
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.351 (d)(2)
According to OSHA, workers in the vicinity of the direct rays of arc weldinng shall be shielded by:
I. Noncombustible or flame proof screens
II. Lexan screens or canvass barriers
I only
II only
Both I and II
Neither I or II
741
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.351 (e)
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Chlorinated solvents shall be kept at least _____ from
an inert gas metal arc welding process.
96'
125'
200'
210'
742
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.353 (d)(1)(i)
According to OSHA when an employee is working in proximity to an electric power circuit and contact may
be possible during the course of work, ___ should be
done to protect the employee from electric shock.
kill the circuit
issue protective shoes
issue rubber gloves
ground and de-energize circuit
743
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.416 (a)
The structural member of a supported scaffold used to increase the base width of a scaffold in order to
provide support for and increase stability of a scaffold
is called:
a needle beam
an outrigger
a stilt
a crawling board
744
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.450 (b)
Definitions
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Scaffolding should be capable of supporting its own
weight and at least ____ times its' intended load.
2
3
4
10
745
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.451 (a)(1)
Scaffold planks should extend over their end supports not less than ____ (according to OSHA).
2''
4''
1''
6''
746
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.451 (b)(4)
According to OSHA rules and regulations, scaffold planks should extend past their end supports a
MAXIMUM of _____ inch(es).
4
6
8
12
747
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.451 (b)(4)
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According to OSHA, the minimum overlap of
planking on scaffold is:
4"
6"
8"
12"
748
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.451 (b)(7)
Stairways on scaffolds shall be installed between _____ from the horizontal
45° and 40°
80° and 90°
15° and 30°
40° and 60°
749
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.451 (e)(4)(xi)
Guardrails should be installed on 4.5' wide scaffolding over _____ feet above a lower level.
10 feet
8 feet
4 feet
12 feet
750
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.451 (g)(1)
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According to OSHA, guardrails are required on
scaffolding at heights above ___ feet above the working surface.
10
15
20
25
751
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.451 (g)(1)
According to OSHA, the top edge height of top rails on supported scaffolds shall be installed between ___
inches and 45" above the platform surface.
38
36
34
32
752
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.451 (g)(4)(ii)
The required guard rails that are installed on scaffolding should be a minimum of ____ inches high.
32
38
40
44
753
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.451 (g)(4)(ii)
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According to OSHA 1926, if guard rails are required
for fall protection, the height of the guard rail shall be ___ minimum height.
32"
34"
36"
38"
754
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.451 (g)(4)(ii)
Vertical lifelines, independent support lines, and suspension ropes shall not be attached to each other,
nor shall they be attached to or use ____, nor shall
they be attached to the same point on the scaffold or
personal fall arrest system.
an automatic locking device
the guardrail system
a safety net
the same point of anchorage
755
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.451 (g)(4)(iv)
OSHA requires what minimum clearance between the bottom of a toe board and a walking or working
surface of a scaffold?
1/4"
3/16"
5/8"
11/16"
756
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.451 (h)(4)(ii)
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According to OSHA, the minimum permissible size
for planking on a wood pole scaffold used for light duty up to 60 feet shall be ______.
2" x 4"
2" x 8"
2" x 10"
2" x 12"
757
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.451 Subpart L Appendix A, 2 (Specific
Guidelines and Tables)
According to OSHA, employees shall not be permitted to ride on a mobile scaffold unless which of the
following conditions exist?
when there is less than 4 persons on the
scaffold
when outriggers are used
when the height to base ratio is 5% or less
when the floor is within 3 degrees of level
758
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.452 (w)(6)(i)
According to OSHA, an employer shall not allow
employees to ride on manually propelled scaffold
unless:
more than one person propels the scaffold
the floor is within 3% of level and free of pits, holes and obstructions
the scaffold is less than 12' high
the employees have safety lanyards attached
759
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.452 (w)(6)(i)
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According to OSHA, employees may not ride on a
manually propelled scaffold unless:
the scaffold is less than 12' high
the floor is within 3% of level
the employees have safety lanyards attached
more than one person propels the scaffold
760
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.452 (w)(6)(i)
According to OSHA, the location of a job-site first aid kit, must be:
readily accessible
accessible
unconcealed
easily accessible
761
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.50 (d)(1)
According to OSHA standards for the construction industry, first aid kit supplies must be:
replaced at the beginning of each week
replaced weekly
replaced daily as needed
checked weekly
762
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.50 (d)(2)
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According to OSHA, Employers must provide fall
protection for each employee working on roofs with unprotected sides or edges which is _____ feet or more
above a lower level or grade.
6
8
10
12
763
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.501 (b)(1)
According to OSHA, fall protection shall be provided on low slope roofs when the distance is ___ feet or
more that a worker can fall.
6
8
10
12
764
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.501 (b)(10)
According to OSHA, fall protection shall be provided on low slope roofs when the distance meets or exceeds
____ feet that a worker can fall.
6
8
10
12
765
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.501 (b)(10)
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According to OSHA, fall protection shall be provided
when employees are required to work on the leading edge of a roof that is a minimum of what distance
above lower levels?
6'
8'
12'
16'
766
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.501 (b)(10)
or (b)(11)
According to OSHA, a personal fall-arrest system shall be rigged so that an employee can fall no farther
than:
6'
8'
10'
12'
767
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.502
(d)(16)(iii)
Personal fall arrest systems when stopping a fall, shall
be rigged so that an employee can neither free fall
more than ___, nor contact any lower level.
5'
5.5'
6'
6.5'
768
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.502
(d)(16)(iii)
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According to OSHA standards, if you have 20 workers
at a jobsite, you are required to provide no less than ____ toilets.
1
2
3
4
769
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.51 (c)(1)
According to OSHA standards for construction industry, how many toilets should a job site have when
the number of employees on a job is 20 or less?
1
2
3
4
770
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.51 (c)(1)
According to OSHA, employees are not to be subject to impact or impulsive noises that exceed ___ sound
pressure level.
140 dB
120 dB
130 dB
160 dB
771
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.52 (e)(1)
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According to OSHA, an employee should not be
exposed to a noise sound pressure level of more than 92 db for a period of ____ hours.
2
4
6
8
772
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.52 Table D-2
According to OSHA Standards, when is it required to replace wire rope cables?
yearly
when 5% of the wires in running rope per lay
are broken
when there are more than 2 broken wires in
one strand in one lay
when there are more than 2% of the wires in standing rope per lay are broken
773
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.550 (a)(7)(i)
When should wire rope cables be replaced?
yearly
when any one of the wires per lay are broken
when 10% of the wires per lay are broken
when any 3 of the wires in one strand in one
lay are broken
774
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.550 (a)(7)(i)
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When should wire rope cables be replaced?
yearly
when any 1 of the wires per lay are broken
when 10% of the wires per lay are broken
when any 3 of the wires per lay are broken
775
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.550 (a)(7)(i)
When an employee is involved in an abrasive blasting
operation, he shall be equipped with heavy canvas or leather gloves and aprons or equivalent protection to
protect from the impact from abrasives.
True
False
776
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.57 (f)(5)(b)
According to OSHA, respiratory protection equipment used in sand blasting operations, is approved
by______:
Bureau of Land Development
NIOSH
Department of Health
Department of Medical Methods
777
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.57 (f)(5)(i)
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All mechanized or motorized equipment ___ ,
adjacent to a highway in normal use, or adjacent to construction areas where work is in progress, shall
have have appropriate lights or reflectors, or
barricades equipped with apprpriate lights or reflectors, to identify the location of the equipment.
left unattended duirng the day
left attended during the day
left attended at night
left unattended at night
778
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.600 (a)(1)
On a jobsite, heavy equipment, or parts thereof, which are suspended or held aloft by use of slings, hoists or
jacks shall be substantially blocked or cribbed to
prevent falling or shifting before employees are permitted to work under or between them.
blocked
cribbed
both blocked and cribbed
blokced or cribbed
779
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.600 (a)(3)(i)
The name of the horizontal member placed parallel to
the excavation face, according to OSHA, in shoring, is:
cross brace
a soldier brace
brace wall
wale
780
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.650 (b)
Copyrighted by Greenview Enterprises 1997 - 2010 Page 259 of 276
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According to OSHA, what safety precautions are to be
taken when a backhoe digs in an area where utilities are located?
get off and check occasionally
move the backhoe closer to the hole edge
use a spotter to direct movement
proceed with caution
781
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.651 (b)(2)
At a trench depth of _____ feet OSHA requires an adequate means of exit.
1
2
3
4
782
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.651 (c)(2)
Such as a Ladder!
The intervals of ladders placed in trenches for egress shall be no further than:
35'
40'
45'
50'
783
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.651 (c)(2)
No more than 25 feet of lateral travel.
Copyrighted by Greenview Enterprises 1997 - 2010 Page 260 of 276
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OSHA requires a ladder in every excavation _____ or
deeper.
5'
3'
4'
6'
784
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.651 (c)(2)
Which of the following trench conditions, according to OSHA, would require a second means of access/egress?
a trench, 4' deep, where employees are
required to enter
a trench, 25' in length, where employees are required to enter
a trench, 4' deep, where employees are
required to enter or, a trench, 25' in length, where employees are required to enter
a trench, longer than 25' in length, where employees are required to enter, or, a trench,
4'or deeper, where employees are required to
enter
785
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.651 (c)(2)
At what depth of an excavation does OSHA require a
ladder?
3'
4'
5'
6'
786
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.651 (c)(2)
Copyrighted by Greenview Enterprises 1997 - 2010 Page 261 of 276
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According to OSHA, materials shall be stored a
distance of at least ____ feet from the edges of an excavation, to protect employees from falling debris.
2'
4'
6'
10'
787
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.651 (j)(2)
While trenching and excavating, OSHA requires at least _____ feet of clear unobstructed distance from
the trenches edge to the toe of the spoil pile.
1'
2'
3'
4'
788
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.651 (j)(2)
According to OSHA, employees must be protected from materials that could fall into an excavated area.
Materials shall be stored at least _____ feet from the
edges of an excavation?
1
2
3
4
789
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.651 (j)(2)
Copyrighted by Greenview Enterprises 1997 - 2010 Page 262 of 276
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According to OSHA, _____ should inspect
excavations daily after a rain storm.
a licensed engineer
on site supervisor
a general building contractor
a competent person
790
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.651 (k)(1)
According to OSHA, inspections shall be made after every rainstorm of excavations by:
culvert contractor
culvert engineer
OSHA official
"competent" person
791
A.
B.
C.
D.
CORRECT: D OSHA 29 CFR 1926.651 (k)(1)
According to OSHA, while excavating a trench, how often should a competent person in addition to daily
inspection, check the safety of the trench?
After a rain storm
Each additional 10 feet of depth
Every 2 hours
Each time workers enter the trench
792
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.651 (k)(1)
Copyrighted by Greenview Enterprises 1997 - 2010 Page 263 of 276
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When an excavation is inspected by a competent
person and evidence of a situation that could result in a possible cave-in is found, OSHA requires that:
the job be closed
employees be removed immediately
life lines be issued
immediate correction
793
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.651 (k)(2)
According to OSHA, a trench must be shored at a minimum depth of ___ feet, when workers are to enter
the trench.
2'
5'
12'
124"
794
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.652 (a)(ii)
According to OSHA, the sides of a ditch above _____ shall be sloped back to prevent a cave-in.
3'
4'
5'
8'
795
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.652 (a)(ii)
Copyrighted by Greenview Enterprises 1997 - 2010 Page 264 of 276
AL HVAC Contractor Comprehensive Tutorial
According to OSHA, when employees are required to
work in trenches in unstable ground, sheeting or sloping is required at a trench depth of ____ or more
feet.
3
4
5
6
796
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.652 (a)(ii)
At what depth does OSHA require a trench to be shored on the sides?
>3'
>4'
>5'
>8'
797
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.652 (a)(ii)
According to OSHA, sidewalks which have been undermined for the purpose of working underneath,
I. Shall have a support system installed
II. While employees are working or not
I only
II only
both I and II
neither I nor II
798
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.652 (i)(3)
Copyrighted by Greenview Enterprises 1997 - 2010 Page 265 of 276
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According to OSHA, while excavating a trench, how
often should a competent person in addition to daily inspection, check the safety of the trench?
After a rain storm
Each additional 10 feet of depth
Every 2 hours
Each time workers enter the trench
799
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.652 (k)(1)
According to OSHA, the process of temporarily supporting a deck after the removal of formwork so
that higher level work may commence is:
re-shoring
shoring
vertical-shoring
scaffold-shoring
800
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.700 (b)(6)
Manually-operated power concrete trowels shall be equipped with a ___.
hand release type shut-off
blade guard
shock absorbers
spark arrestor
801
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.701 (c)
Copyrighted by Greenview Enterprises 1997 - 2010 Page 266 of 276
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Concrete pumping systems using discharge pipes shall
be provided with pipe supports designed for ___ overload.
50%
75%
100%
125%
802
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.702 (e)(1)
According to OSHA, during the erection of structural steel members there shall not be more than ____
between the erection floor and uppermost permanent
floor.
4 stories
60 feet
8 stories
120 feet
803
A.
B.
C.
D.
CORRECT: C OSHA 29 CFR 1926.754 (b)(1)
According to OSHA, at no time shall there be more than four floors or ___ feet of unfinished bolting or
welding above the foundation or uppermost
permanently secured floor.
36
48
54
60
804
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1926.754 (b)(2)
Copyrighted by Greenview Enterprises 1997 - 2010 Page 267 of 276
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According to OSHA, during the final placing of solid
web structural membersused for diagonal bracing, the load shall not be released from the hoisting lines until
the members are secured with not less than ___ , or
the equivalent at each connection and drawn up wrench tight.
1 bolt
2 bolts
tach welded
fillet welded
805
A.
B.
C.
D.
CORRECT: A OSHA 29 CFR 1926.756 (b)
While in violation of the OSHA regulations, an employee has been discriminated against and
discharged for filing a complaint. Within what time
period after the violation occurs must the employee file a complaint about discriminations?
45 days
30 days
60 days
90 days
806
A.
B.
C.
D.
CORRECT: B OSHA 29 CFR 1977.15 (d)
According to the SMACNA Standard Symbols for
Ventilation and Airconditioning Ductwork drawings,
this symbol means:
direction of flow
duct size
supply air duct section
return air duct section
807
A.
B.
C.
D.
CORRECT: A SMACNA HVAC Duct System
Design
Copyrighted by Greenview Enterprises 1997 - 2010 Page 268 of 276
AL HVAC Contractor Comprehensive Tutorial
According to the SMACNA Standard Symbols for
Ventilation and Airconditioning Ductwork drawings, this symbol means:
Duct Section, Positive Pressure
Duct Section, Negative Pressure
Duct Size
Change of Elevation
808
A.
B.
C.
D.
CORRECT: C SMACNA HVAC Duct System Design
According to the SMACNA Standard Symbols for Ventilation and Airconditioning Ductwork drawings,
this symbol means:
Duct Section, Positive Pressure
Duct Section, Negative Pressure
Direction of Flow
Change of Elevation
809
A.
B.
C.
D.
CORRECT: A SMACNA HVAC Duct System
Design
According to the SMACNA Standard Symbols for Ventilation and Airconditioning Ductwork drawings,
this symbol means:
Flexible Connection
Acoustical Lining (insulation)
Sound Attenuator
Cowl (Gooseneck) and Flashing
810
A.
B.
C.
D.
CORRECT: B SMACNA HVAC Duct System
Design
Copyrighted by Greenview Enterprises 1997 - 2010 Page 269 of 276
AL HVAC Contractor Comprehensive Tutorial
According to the SMACNA Standard Symbols for
Ventilation and Airconditioning Ductwork drawings, this symbol means:
Sound Attenuator
Flexible Connection
Cowl (Gooseneck) and Flashing
Flexible Duct.
811
A.
B.
C.
D.
CORRECT: C SMACNA HVAC Duct System Design
According to the SMACNA Standard Symbols for Ventilation and Airconditioning Ductwork drawings,
this symbol means:
Flexible Connection
Sound Attenuator
Flexible Duct.
Terminal Unit
812
A.
B.
C.
D.
CORRECT: A SMACNA HVAC Duct System
Design
According to the SMACNA Standard Symbols for Ventilation and Airconditioning Ductwork drawings,
this symbol means:
Terminal Unit, Mixing
Flexible Duct.
Flexible Connection
Terminal Unit, Reheat
813
A.
B.
C.
D.
CORRECT: B SMACNA HVAC Duct System
Design
Copyrighted by Greenview Enterprises 1997 - 2010 Page 270 of 276
AL HVAC Contractor Comprehensive Tutorial
According to the SMACNA Standard Symbols for
Ventilation and Airconditioning Ductwork drawings, this symbol means:
Terminal Unit, Variable Volume
Terminal Unit, Mixing
Transition
Terminal Unit, Reheat
814
A.
B.
C.
D.
CORRECT: D SMACNA HVAC Duct System Design
According to the SMACNA Standard Symbols for Ventilation and Airconditioning Ductwork drawings,
this symbol means:
Terminal Unit, Mixing
Acoustical Lining
Terminal Unit, Variable Volume
Terminal Unit, Reheat
815
A.
B.
C.
D.
CORRECT: C SMACNA HVAC Duct System
Design
According to the SMACNA Standard Symbols for Ventilation and Airconditioning Ductwork drawings,
this symbol means:
Detectors, Fire / Smoke
Transition
Turning Vanes
Heater Duct, Electric
816
A.
B.
C.
D.
CORRECT: B SMACNA HVAC Duct System
Design
Copyrighted by Greenview Enterprises 1997 - 2010 Page 271 of 276
AL HVAC Contractor Comprehensive Tutorial
According to the SMACNA Standard Symbols for
Ventilation and Airconditioning Ductwork drawings, this symbol means:
Vertical Position
Electric Operated Damper
Pneumatic Operated Damper
Fire Damper and Sleeve
817
A.
B.
C.
D.
CORRECT: C SMACNA HVAC Duct System Design
According to the SMACNA Standard Symbols for Ventilation and Airconditioning Ductwork drawings,
this symbol means:
Horizontal Position
Fire Damper and Sleeve
Vertical Position
Electric Operated Damper
818
A.
B.
C.
D.
CORRECT: D SMACNA HVAC Duct System
Design
According to the SMACNA Standard Symbols for Ventilation and Airconditioning Ductwork drawings,
this symbol means:
Manual Volume
Fire Damper and Sleeve, Vertical Position
Fire Damper and Sleeve, Horizontal Position
Manual Splitter
819
A.
B.
C.
D.
CORRECT: B SMACNA HVAC Duct System
Design
Copyrighted by Greenview Enterprises 1997 - 2010 Page 272 of 276
AL HVAC Contractor Comprehensive Tutorial
According to the SMACNA Standard Symbols for
Ventilation and Airconditioning Ductwork drawings, this symbol means:
Standard Branch Return, No Splitter
Smoke Damper
Standard Branch Supply, No Splitter
Heater, Duct, Electric
820
A.
B.
C.
D.
CORRECT: B SMACNA HVAC Duct System Design
According to the SMACNA Standard Symbols for Ventilation and Airconditioning Ductwork drawings,
this symbol means:
Standard Branch Return, No Splitter
Heater, Duct, Electric
Cowl (Gooseneck) and Flashing
Standard Branch Supply, No Splitter
821
A.
B.
C.
D.
CORRECT: D SMACNA HVAC Duct System
Design
According to the SMACNA Standard Symbols for Ventilation and Airconditioning Ductwork drawings,
this symbol means:
Cowl (Gooseneck) and Flashing
Standard Branch Return, No Splitter
Standard Branch Supply, No Splitter
Heater, Duct, Electric
822
A.
B.
C.
D.
CORRECT: B SMACNA HVAC Duct System
Design
Copyrighted by Greenview Enterprises 1997 - 2010 Page 273 of 276
AL HVAC Contractor Comprehensive Tutorial
According to the SMACNA Standard Symbols for
Ventilation and Airconditioning Ductwork drawings, this symbol means:
Return or Exhaust Grille
Supply Register
Supply Outlet Ceiling Round
Supply Outlet Ceiling Square
823
A.
B.
C.
D.
CORRECT: B SMACNA HVAC Duct System Design
According to the SMACNA Standard Symbols for Ventilation and Airconditioning Ductwork drawings,
this symbol means:
Terminal Unit
Supply Outlet Ceiling Round
Exhaust or Return Air Inlet Ceiling
Supply Outlet Ceiling Round
824
A.
B.
C.
D.
CORRECT: C SMACNA HVAC Duct System
Design
According to the SMACNA Standard Symbols for Ventilation and Airconditioning Ductwork drawings,
this symbol means:
Supply Outlet Ceiling Square
Terminal Unit
Combination Diffuser and Light Fixture
Supply Outlet Ceiling Round
825
A.
B.
C.
D.
CORRECT: D SMACNA HVAC Duct System
Design
Copyrighted by Greenview Enterprises 1997 - 2010 Page 274 of 276
AL HVAC Contractor Comprehensive Tutorial
According to the SMACNA Standard Symbols for
Ventilation and Airconditioning Ductwork drawings, this symbol means:
Door Grille
Fan & Motor with Belt Guard & Flexible
Connections
Combination Diffuser and Light Fixture
Sound Trap
826
A.
B.
C.
D.
CORRECT: A SMACNA HVAC Duct System Design
According to the SMACNA Standard Symbols for Ventilation and Airconditioning Ductwork drawings,
this symbol means:
Fan & Motor with Belt Guard & Flexible
Connections
Ventilating Unit
Sound Trap
Unit Heater (Downblast)
827
A.
B.
C.
D.
CORRECT: C SMACNA HVAC Duct System Design
According to the SMACNA Standard Symbols for
Ventilation and Airconditioning Ductwork drawings,
this symbol means:
Unit Heater (Downblast)
Fan & Motor with Belt Guard & Flexible Connections
Sound Trap
Ventilating Unit
828
A.
B.
C.
D.
CORRECT: B SMACNA HVAC Duct System
Design
Copyrighted by Greenview Enterprises 1997 - 2010 Page 275 of 276
AL HVAC Contractor Comprehensive Tutorial
According to the SMACNA Standard Symbols for
Ventilation and Airconditioning Ductwork drawings, this symbol means:
Louvers and Screen
Power or Gravity Roof Ventilator-Exhaust
Unit Heater (Horizontal)
Thermostat
829
A.
B.
C.
D.
CORRECT: D SMACNA HVAC Duct System Design
According to the SMACNA Standard Symbols for Ventilation and Airconditioning Ductwork drawings,
this symbol means:
Power or Gravity Roof Ventilator-Louvered
Power or Gravity Roof Ventilator-Intake
Louvers and Screen
Power or Gravity Roof Ventilator-Exhaust
830
A.
B.
C.
D.
CORRECT: D SMACNA HVAC Duct System
Design
According to the SMACNA Standard Symbols for Ventilation and Airconditioning Ductwork drawings,
this symbol means:
Power or Gravity Roof Ventilator-Exhaust
Louvers and Screen
Power or Gravity Roof Ventilator-Intake
Power or Gravity Roof Ventilator-Louvered
831
A.
B.
C.
D.
CORRECT: C SMACNA HVAC Duct System
Design
Copyrighted by Greenview Enterprises 1997 - 2010 Page 276 of 276
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