Tuesday, January 11, 2022

Dr.A.P.J.Abdul Kalam University BE III SEM ALL BRANCH DEC 2020 Strength of Materials [CE-302] Dec - 2020 Question Paper

Dr.A.P.J.Abdul Kalam University Old Question Papers

Bachelor of Engineering

Third Semester Main Examination, Dec-2020

Strength of Materials [CE-302]


Time: 3:00 Hrs Max Marks 70

Note : (i) Attempt any five questions. All questions carry equal marks.

(ii) Answer should be precise & to be point only.

(iii) Assume suitable data if necessary & state them clearly

Q.1 Derive a relation between young’s modulus of elasticity(E) and modulus of rigidity(C).

Q.2 A horizontal cantilever 5m long carries a point load of 1kN at the free end and a U.D.L. of

0.5kN/m over a length of 3m from the free end. Draw the shear force and bending moment

diagram for the beam

Q.3 A 250mm (depth) × 150mm (width) rectangular beam is subjected to maximum bending moment

of 750 kNm. Determine the maximum stress in the beam.

Q.4 A circular bar made of cast iron is to resist an occasional torque of 2.2kNm acting in transverse

plane. If the allowable stress in compression, tension and shear are 100MN/m2, 35MN/m2 and

50MN/m2 respectively. Take C=40GN/m2 and find:-

1)Diameter of bar

2)Angle of twist under the applied torque per meter length of bar.

Q.5 Write down the classifications of beams with neat sketch.

Q.6 What is Mohr’s circle? Write down the stepwise procedure for construction of Mohr’s circle for

two perpendicular direct stresses with state of simple shear.

Q.7 Determine the section modulus for following:-Rectangular section of width ‘b’ and depth ‘d’.

Circular section of diameter ‘d’

Q.8 (a) What are the different types of load acting on a beam. Explain with neat sketchs.

(b) What is the procedure of finding thermal stresses in a composite bar?

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