61. A thick pressure vessel is always used for the generation of steam, as it can withstand high pressures.
TRUE
FALSE
✅ The correct answer is option B.
Strength of Materials MCQs
62. The relation between Young’s modulus (E) and bulk modulus (K) is given by
✅ The correct answer is option D.
63. The longitudinal stress in a riveted cylindrical shell of diameter (d), thickness (t) and subjected to an internal pressure (p) is
✅ The correct answer is option C.
64. A bolt is made to pass through a tube and both of them are tightly fitted with the help of washers and nuts. If the nut is tightened, then
bolt arid tube are under tension
bolt and tube are under compression
bolt is under compression and tube is under tension
bolt is Under tension
✅ The correct answer is option D.
65. The ratio of the lateral strain to the linear strain is called
modulus of elasticity
modulus of rigidity
bulk modulus
Poisson’s ratio
✅ The correct answer is option D.
66. Factor of safety is defined as the ratio of
ultimate stress to working stress
working stress to ultimate stress
breaking stress to ultimate stress
ultimate stress to bre
✅ The correct answer is option A.
67. The bending moment of a cantilever beam of length l and carrying a uniformly distributed load of w per unit length is __________ at the free end.
zero
wl/4
wl/2
wl
✅ The correct answer is option A.
68. A shear stress across a plane, is always accompanied by a balancing shear stress across the plane and normal to it.
TRUE
FALSE
✅ The correct answer is option B.
69. The shear force diagram for a simply supported beam carrying a uniformly distributed load of w per unit length, consists of
one right angled triangle
two right angled triangles
one equilateral triangle
two equilateral triang
✅ The correct answer is option B.
70. Two bars of different materials and same size are subjected to the same tensile force. If the bars have unit elongation in the ratio of 2:5, then the ratio of modulus of elasticity of the two materials will be
2:05
5:02
4:03
3:04
✅ The correct answer is option B.