Civil Engg MCQ

For Free Exam preparation please Visit www.exams.qoney.com

1.

What is the total degree of indeterminacy in the continuous prismatic beam shown in the

above figure?

(a) 1

(b) 2

(c) 3

(d) 4

Ans. (d)

2.

What is the total degree of indeterminacy (both internal and external) of the cantilever

plane truss shown in the above figure?

(a) 2

(b) 3

(c) 4

(d) 5

Ans. (a)

3.


What is the number of independent degrees of freedom of the two-span continuous

beam of uniform section shown in the above figure?

(a) 1

(b) 2

(c) 3

(d) 4

Ans. (d)

4.

What is the kinematic indeterminacy for the frame shown above? (Member inextensible)

(a) 6

(b) 11

(c) 12

(d) 21

Ans. (b)

5.


The propped cantilever AB carries a uniformly distributed load of q / unit length. In this

condition the moment reaction What is the clockwise moment required at B to

make the slope of the deflection curve equal to zero?

Ans. (c)

6.

The fixed beam AB has a hinge C at mid span.

A concentrated load P is applied at C.

What is the fixed end moment MA?


Ans. (b)

7.

What is the shear equation in slope deflection method for the portal frame shown

above?

Ans. (a)

8.


For the propped cantilever shown in the above figure, a hinge is provided at C. A and

B are at the same level. What is the force reaction at the fixed end A?

Ans. (b)

9. Match List-I with List-II and select the correct answer using the code given below the

lists:

List-I List-II

(Analysis Method) (Structure Type)

A. Kane’s method

C. Column method

D. Displacement method


B. Force method

Code:

A B C D

(a) 4 1 3 2

(b) 4 3 1 2

(c) 2 1 3 4

(d) 2 3 1 4

Ans. (b)

10.

A portal frame has a collapse mechanism as shown above. What is the type?

(a) Pure portal mechanism

(b) Panel mechanism

(c) Combined mechanism

(d) Dual beam mechanism

Ans. (c)

11.


For the rigid frame shown above, what is the moment reactions at A?

(a) 5 kNm

(b) 10 kNm

(c) 12.33 kNm

(d) 15 kNm

Ans. (b)

12. If the free end of a cantilever of span -and flexure rigidity- El undergoes a unit

displacement (without

rotation). what is the bending moment induced at the fixed end?

Ans. (d)

13.


A fixed beam AB, of constant El, shown in the above figure, supports a concentrated

load of

10 kN. What is the fixed end-moment MFAB at support A ?

(a) 4.8 kNm

(b) 6.0 kNm

(c) 7.2 kNm

(d) 9.5 kNm

Ans. (c)

14.

In the Portal frame shown above, what are the distribution factors for members BA, BC

and

BD respectively?


Ans. (a)

15. Which one of the following is correct? An intermediate vertical stiffener connected to

the web is

designed to withstand a shearing force of not less than

Ans. (d)

16.

What is the failure of a section shown in the figure above called?

1. Web buckling

2. Web crippling

3. Web crimpling


4. Column buckling

Select the correct answer using the code given below:

(a) 1 and 2

(c) 1 and 4

(b) 2 and 3

(d) 2 and 4

Ans. (b)

17. A load P is applied at the middle of a simply supported beam of span L. If the beam

is made of ductile material, and Mp is the plastic moment, what is the ultimate value of

P?

Ans. (d)

18 What is the moment capacity of an under- reinforced rectangular RCC beam?

(a) R b d2

(b) R d b2

(c) Ast, σst, j d

(d) Ast, j d

(Symbols have the usual meaning)

Ans. (c)


19. If everyone of the three angles of a triangle has a probable error of ± 1”, then what

will be the probable error in the sum of the

so measured internal angles of the triangle?

(a) ±1”

(b) ±3”

(c) ±9”

(d) ±√3

Ans. (d)

20. The approximate hourly output of a scraper is given by by where C is

the struck capacity of the scraper in m3 and D is the one-way haul distance in meters.

For a nominal 7m3 scraper hauling over 65m, the hourly output will nearly be

(a) 170 m3

(b) 160 3

(c) 150 m3

(d) 140 m3

Ans. (d)

21. If the weight of an angle A (= 400 24´ 24´´ say) is 2, then the weight of the angles

A/3 (= 13° 28´ 08´´) will be

(a) 4

(b) ± √3

(c) 9


(d) 18

Ans. (d)

22. If δ is the declination of a star and φ is the latitude of the place of observation, then

for a circumpolar star

(a) δ ≤ φ

(b) δ ≥ φ

(c) δ ≤ (90o- φ)

(d) δ ≤ (90o- 2φ)

Ans. (c)

23. Consider the below figure relating to buoyancy in water. What will be the downward

force upon the top of the body ABCDEF?

(a) Weight of the liquid column ABCNG

(b) Weight of the liquid column DEFGH.

(c) Weight of the liquid column ABCHG

— weight of the liquid column DEFGH

(d) Weight of the liquid column ABCHG

+ weight of the liquid column DEFGH

Ans. (a)


24. Consider the following statements in respect of two-dimensional incompressible flow

with velocity components u and v in x and y

directions respectively:

1. The continuity equation is

2. The acceleration in x-direction is

3. The condition of irrotationality is

4. The equation of a streamline is

Which of the above statements are correct?

(a) 2 and 3 only

(b) 1 and 2 only

(c) 1, 2 and 3

(d) 3 and 4

Ans. (a)

25. The land use of an area and the

corresponding runoff coefficients are as

follows:


What is the equivalent runoff coefficient?

(a) 0.15

(b) 0.36

(c) 0.40

(d) 0.51

Ans. (c)

26.. Consider the following properties for clays X and Y:

Which of the clays, X or Y, experiences larger settlement under identical loads; is more

plastic; and is softer in consistency?

(a) X, Y and X

(b) Y, X and X.

(c) Y, X and Y

(d) X, X and Y

Ans. (c)

27. An engine was tested at local atmospheric pressure of 73 cm of mercury and local

temperature of 10°C, and was found to develop

X1 units of power. If it was later worked at conditions of 75 cm of mercury as local

atmospheric pressure and at local temperature

of 16°C, what proportion of X1 will it then develop?

(a) nearly time more


(b) nearly times less

(c) nearly times more

(d) nearly times less

Ans. (c)

28. Match List-I with List-II and select the correct answer using the code given below the

lists:

List-I List-II

Code:

A B C D

(a) 3 1 5 2

(b) 2 1 4 3

(c) 3 5 1 4

(d) 2 4 1 3

Ans. (a)


29. What is the net downward load to be considered for the analysis of the prestressed

concrete beam provided with a parabolic

c7 able as shown in the figure? 30 kN/m (including selfweight)

(a) 12 kN/m

(b) l2 kN/m

(c) 14 kN/m

(d) l5 kN/m

Ans. (c)

30. How many links are deletable in the A-O-N network shown above?


(a) None

(b) One

(c) Two

(d) Three

Ans. (b)

31. Consider the accompanying A-O-N diagram;

Which one of the following A-O-A diagrams correctly represents this A-O-N diagram?

Ans. (c)


32. The scheduled durations, by the convention ‘after/at the end, of indicated day

number’ and the cost per day of duration, of each activity are shown in the network.

What are the costs incurred on day numbers 13 and 17?

(a) 14 and 20

(b) 11 and 18

(c) 14 and 21

(d) 11 and 21

Ans. (c)

33. What is the proportional variation; and what is; the ‘range’ of project duration; the

network as shown with the indicated probabilistic a, m, b durations of the respective

activities?

(a) 28 to 42

(b) 30 to 45

(c) 28 to 42


(d) 30 to 45

Ans. (a)

34. The details of the principal stresses at a certain point in steel member are as

follows:

Major principal stress = 180 N/mm2 (Tensile)

Major principal stress is (Compressive). If the uniaxial tensile yield stress is 240

N/mm2, according to maximum shear stress theory, what would be the value of in

N/mm2 which yielding will commence?

(a) 120 tension

(b) 90 tension

(c) 80 compression

(d) 60 compression

Ans. (d)

35. An element of a structure is subjected to two principal stresses and

= 200 N/mm2 (tensile),

is compressive.

The yield stress both in simple tension and compression for the material is 240 N/mm2.

Poisson’s ratio µ = 0.25; what is the value of in N/mm2 as per maximum normal

strain theory at which the yield of the material will commence?

(a) 240

(b) 200

(c) 180


(d) 160

Ans. (d)

36. A structural beam subjected to sagging bending has a cross-section which is an

unsymmetrical I-section. The overall depth of the

beam is 300 mm. The flange stresses in the beam is 300 mm. The flange stresses in

the beam are

= 200 N/mm2

= 50 N/mm2

What is the height in mm of neutral axis above the bottom flange?

(a) 240 mm

(b) 60 mm

(c) 180 mm

(d) 120 mm

Ans. (a)

37. A circular column of external diameter D, and internal diameter d, carries an

eccentric load such that tension is developed

nowhere: What shall be the diameter of the core?

(a)

(b)

(c)


(d)

Ans. (c)

38. A mild steel bar of square cross section 25 mm × 25 mm is 1 m long. It is subjected

to bi-axial stress = 480 N/mm2 (Tension) and = 400 N/mm2 (Compression). E =

2 × 105 N/mm2, µ = 0.3, what is the elongation of the bar in mm in x direction?

(a) 1.0

(b) 1.5

(c) 2.0

(d) 3.0

Ans. (d)

39. Given figure shows, a state of plane stress. If the minimum principal stress is —7

MN/rn2 then what is the value of ?

(a) 30 MN/m2

(b) 68 MN/m2

(c) 98 MN/m2

(d) 105 MN/m2

Ans. (d)


40. A mild steel rod tapers uniformly from 30 mm diameter to 12 mm diameter in a

length of 300 mm. The rod is subjected to an axial

load of 12 kN. E = 2 × 105 N/mm2. What is the extension of the rod in mm?

(a)

(b)

(c)

(d) .

Ans. (d)

41. A simply supported beam AB is loaded as shown in the figure. What is the SF in kN

in the portion AC of the beam?

(a) 2

(b) 4

(c) 0

(d) 6

Ans. (c)

42. A simply supported beam AB of span 4 m subjected to terminal couples as shown in

the figure. If EI is in kN. m2, what is the


magnitude of the central deflection of the beam in metres?

(a) 4/EI

(b) 8/EI

(c) 2/EI

(d) 16/El

Ans. (b)

43. At a point in a piece of stressed material the stresses are:

= α kN/m2 tensile (normal)

= β kN/m2 (shearing)

Although the values of α and β are not known yet the principal stresses are equal to

each other being (5 kN/m2). What is the radius

of Mohr’s circle?

(a) 2.5 + (α + β)

(b) 2.5 + (α + β)

2

(c) 0

(d) 2.5

Ans. (c)

44. Which one of the following is the correct bending moment diagram for a propped

cantilever beam shown in figure below:


Ans. (a)

45. Consider the following statements with respect to the figure of a typical articulated

frame:

1. The frame is internally determinate and externally indeterminate

2. The frame is internally indeterminate and externally determinate


3. The frame is internally as well as externally determinate

4. The frame is internally as well as externally indeterminate

Which of the above statements is/are correct?

(a) 1 only

(b) 1 and 2

(c) 3 only

(d)) 3 and 4

Ans. (c)

46.

What is the force in member 1 for the structure shown in figure above?

(a) 30 kN

(b) 60 kN

(c) 75 kN

(d) 80 kN

Ans. (b)

47. A square section as shown in the figure is subjected to bending moment M. What is

the maximum bending stress?


(a)

(b)

(c)

(d)

Ans. (b)

48. Torsion applied to a circular shaft results in a twist of 1° over a length of 1 m. The

maximum shear stress induced is 120 N/mm2

and the modulus of rigidity of the shaft material is 0.8 × 105 N/mm2. What is the

radius of the shaft?

(a)

(b)

(c)

(d)

Ans. (d)


49. The figure shows a pin-jointed frame. What are the forces in members BE, CD and

ED?

(a) 10 kN, 5kN and 5kN

(b) 10 kN, 5 kN and Zero

(c) 5 kN, 10 kN and Zero

(d) 5 kN, 5 kN and Zero

Ans. (b)

50. What is the rotation of the member at C for a frame as shown in figure?

(a) ML/3EI

(b) ML/4EI

(c) ML/6EI

(d) ML/12EI

Ans. (d)


51. What is the moment at A for a frame as shown figure? Bach member indicated in

dark lines has very large moment or inertia.

(a) PL/2

(b) PL/4

(c) PL/8

(d) PL/16

Ans. (d)

52. What is the bending moment at the end B for the guided beam as shown in the

figure considering the beam to be held rigidly at B

against rotation and to support a load W?

(a) Zero

(b) WI/4

(c) WI/2

(d) WI

Ans. (c)


53. What is the value of θB for the beam shown in figure?

(a) Zero

(b) 15/EI anticlockwise

(c) 30/EI anticlockwise

(d) 30/EI clockwise

Ans. (b)

54. A beam of uniform section fixed at both ends and of span 6 m is acted upon by two

concentrated loads of 6 t each as shown in

figure. What is the fixed end moment at each end?

(a) 6 tm

(b) 8 tm

(c) 10 tm

(d) 12 tm

Ans. (b)


55. What is the value of vertical reaction at A for the frame shown in figure?

(a) 0

(b) 10 kN

(c) l6 kN

(d) 20 kN

Ans. (c)

56. Two bars AO and BO are of uniform area ‘A’ and are hinged at 0. What ii the

Vertical deflection at 0 when elastic modulus is uniformly E?

Ans. (c)


57. A beam of uniform flexural rigidity supports a set of loads as shown in figure below.

What is the value of W if the magnitudes of bending moment at midspan and at

support of the beam are numerically equal?

(a) 20 kN

(b) 40 kN

(c) 60 kN

(d) 80 kN

Ans. (b)

58. What is the reaction on the pin C for a beam as shown in the figure?

Ans. (a)


59. A propped cantilever beam of uniform moment capacity M0 is shown in figure. What

is the collapse load W?

Ans. (c)

60. What is the collapse load in terms of MP, and l for the beam shown in figure?

Ans. (c)


61. A prismatic beam (shape factor, S) fixed at both ends carries UDL throughout the

span. What is the ratio of collapse load to yield

load?

Ans. (a)

62. What is the distance between elastic neutral axis and plastic neutral axis for the

cross- section as shown in figure?

(a) 60 mm

(b) 50 mm

(c) 40 mm

(d) 20 mm

Ans. (d)

63. Flexibility matrix of the beam shown is.:


If support B settles by units, what is the reaction at B?

(a) 0.75 ∆

(b) 3.0 ∆

(c) 6.0 ∆

(d) 24.0 ∆

Ans. (b)

64. What is the ordinate of influence line at B for reaction RD in figure?

(a) 0.5

(b) 0.4

(c) 0.2

(d) Zero

Ans. (a)

65. What is the value of flexibility coefficient f12 for the continuous beam shown in

figure?


Ans. (d)

66. What is the maximum ordinate for influence line for the force in the member marked

X?

(a) 1.0

(b) 1.33

(c) 1.50

(d) 2.50

Ans. (b)


67. A symmetric plate girder is of I section of depth D. The flange plates are of area Af

each and the web plate is of area Aω. What

is the plastic section modulus of the above section provisionable for design?

Ans. (b)

68. Which one of the following graphs represents the compressive strength (σbc) versus

slenderness ratio (λ)?

Ans. (d)


69. What is the safe load P that can be transmitted by the fillet-welded joint shown in

figure if the safe allowable shear stress in the fillet- weld is 108 MPa?

(a) 60 kN

(b) 66 kN

(c) 77 kN

(d) 81 kN

Ans. (c)

70. At the point of collapse, what is the value of the horizontal thrust at point A in the

loaded frame shown in figure?

(a) 3 P

(c) 1.5 P

(b) 2 P

(d) P

Ans. (d)

71. A RC column of square cross-section (400 x 400 mm2) has its column load moment

interaction diagram as shown in figure.


What is the maximum uniaxial eccentricity at which a factored load Pu = 640 kN can

be applied safely? (Take fck = 20 MPa)

(a) 300 mm

(c) 600 mm

(b) 400 mm

(d) 800mm

Ans. (c)

72. What is the slenderness ratio to be considered in design for member BC in the

structure shown below?


(a) 75

(b) 150

(c) 100

(d) 200

Ans. (b)

73. In a T-section shown in figure, what is the distance of plastic neutral axis as

measured down from top?

(a) 100 mm

(b) 150 mm

(d) 300 mm

(c) 200 mm

Ans. (b)

74. A simply supported RC beam having clear span 5 m and support width 300 mm has

cross-section as shown in figure.

What is effective span of the beam as per 1S456?


(a) 5300 mm

(b) 5400 mm

(c) 5200 mm

(d) 5150 mm

Ans. (a)

Civil Engg MCQ

Documents

free exam

liquid column

local atmospheric

plastic neutral

fixed beam

portal frame

local temperature

bending moment