40 0 60 0 B A 25N C Enrollment No………………………. Bachelor of Engineering First Semester Main Examination, Dec-2020 Engineering Mechanics (CE110T) CE/EX/EC/ME Time: 3:00 Hrs Max Marks 70 Note : 1. Attempt any Five questions out of Eight. 2. All questions carry equal marks. 3. Assume suitable data if necessary & state them clearly Q.1 (a) Discuss in brief triangle law of forces for finding resultant of two concurrent forces. (b) Define the following. (i) Body (ii) Rigid body (iii) Particle (iv) Engineering Mechanics Q.2 (a) An object weighing 25N hangs form a point „A‟ with the help of two strings “BA” & “CA” as shown in fig “BA” is inclined at 40 0 to the vertical while “CA” is inclined at 60 0 to the horizontal determine the forces in the strings “BA & CA” (b) State & prove the varignon‟s principle of moments. Q.3 (a) With neat sketehes define (i) Cantilever Beam (ii) Simply Supported (iii) Overhanging Beam (iv) Fixed & Continuous Beam Page [1]
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400
600
B
A
25N
C
Enrollment No……………………….
Bachelor of Engineering
First Semester Main Examination, Dec-2020
Engineering Mechanics (CE110T)
CE/EX/EC/ME
Time: 3:00 Hrs Max Marks 70
Note : 1. Attempt any Five questions out of Eight.
2. All questions carry equal marks.
3. Assume suitable data if necessary & state them clearly
Q.1 (a) Discuss in brief triangle law of forces for finding resultant of two
concurrent forces.
(b) Define the following.
(i) Body
(ii) Rigid body
(iii) Particle
(iv) Engineering Mechanics
Q.2 (a) An object weighing 25N hangs form a point „A‟ with the help of two
strings “BA” & “CA” as shown in fig “BA” is inclined at 400 to the vertical
while “CA” is inclined at 600 to the horizontal determine the forces in the
strings “BA & CA”
(b) State & prove the varignon‟s principle of moments.
Q.3 (a) With neat sketehes define
(i) Cantilever Beam
(ii) Simply Supported
(iii) Overhanging Beam
(iv) Fixed & Continuous Beam
Page [1]
(b) A beam of 6 m long is simply supported at the end and carries a
uniformly distributed load of 1.5 KN/M & three Concentrated loads 1 KN, 2
KN, 3 KN acting respectively at a distance of 1.5m, 3m & 4.5m from the left
end. Determine the reaction at both ends.
Q.4 (a) Determine moment of inertia of the “I” section about the Centroidal axes
xx & yy. All dimensions are in cm.
(b) For a circular pipe of 150 mm external diameter & 120 mm internal
diameter, determine,
(i) Moment of inertia about it‟s diameter
(ii) The radius of gyration
(iii) The polar moment of inertia.
Q.5 (a) How many equations are used in the method of sections explain?
(b) Find the sections and forces in members of the Truses as shown in fig,
truses carries a point load of 1 KN at the joint “D”
Q.6 (a) Write short note on:-
(i) Kinematics & Kinetics
(ii) Velocity & Acceleration
(iii) Displacement & Angular Displacement
(b) Derive equation of motion for a particle having rectilinear motion under
uniform acceleration.
Page [2]
C
30˚ B 60˚ 30˚ A 5m
7.5m 1KN
200 mm
20 mm
10 mm
150 mm
B
A C
2m 2m
Q.7 (a) A motorist is driving h is car at 80 km/h when he observes that a traffic
light 240 m ahead turn red. The traffic light is to remain red for 1.5 seconds.
If the motorist wisher to pass the light without stopping just as it turns green.
find - (1) The required uniform retardation
(2) Speed of the car as it passes the traffic light.
(b) Drown S.I. & B.M. diagram for cantilever beam loaded as shown in
figure below.
Q.8 (a) Write short notes on: - (Any Two)
(i) Fundamental laws of Mechanics
(ii) Boris notation
(iii) Types of loading on beam.
(b) Write short note on: - (Any Two)
(i) Parallel axis Theorem
(ii) Types of Motion
(iii) Newton‟s first law of Motion.
Page [3]
4 KN/M 10 KN
Page [1]
Enrollment No……………………….
Bachelor of Engineering
First Semester Main Examination, Dec-2020
Chemistry [CY110T]
Branch: CE/ME
Time: 3:00 Hrs Max Marks 70
Note: Attempt any five questions out of eight.
All questions carry equal marks.
Q.1 (a) Define Vulcanization? Explain with proper reaction. Mention the
advantages of vulcanized rubber.
(b) Explain the Poly Vinyl Chloride (PVC) on the basis of Its Properties,
Preparation and Uses.
Q.2 (a) What is the valence-shell electron-pair repulsion (VSEPR) model? Give
the hybridization of CO2, SO2, CH4 SF4, and SF6 molecules.
(b) Define Electrochemistry? Explain Arrhenius theory of electrolytic
dissociation.
Q.3 (a) 0.5g of CaCo3 was dissolved in dilute HCL and diluted to 500 ml with
distilled water ,50 ml of this solution required 48 ml of EDTA solution for
titration.50ml of hard water sample required 15 ml of EDTA solution for
titration.50 ml of same water sample on boiling and filtering requires 10 ml
of EDTA solution . Calculate temporary, permanent and total hardness in
ppm.
(b) Write a short not on following:
(i) Transport Number
(ii) Kohlrausch’s Law
(iii) Solubility Product
(iv) Redox Reaction
(v) Electrochemical Cells
Q.4 (a) What is the molecular orbital theory? With the help of MO diagram
calculate the bond order of the following: CO, NO, O2, O2 –
, O2 2–
.
(b) Explain the detailed procedure for determining the flash & fire point of
lubricating oil.
Q.5 Discuss the differences between order of the reaction and molecularity of a