Top 1000+ Solved Strength of Materials MCQ Questions Answer
Q. A bar of length L metres extends by l mm under a tensile force of P. The strain produced in the bar is
a. l / L
b. 0.1 l / L
c. 0.01 l / L
d. 0.001 l / L
Q. The maximum stress produced in a bar of tapering section is at
a. smaller end
b. larger end
c. middle
d. anywhere
Q. When two shafts of same length, one of which is hollow, transmit equal torques and have equal maximum stress, then they should have equal
a. polar moment of inertia
b. polar modulus
c. diameter
d. angle of twist
Q. In a simple bending theory, one of the assumption is that the material of the beam is isotropic. This assumption means that the
a. normal stress remains constant in all directions
b. normal stress varies linearly in the material
c. elastic constants are same in all the directions
d. elastic constants varies linearly in the material
Q. A tensile test is performed on a round bar. After fracture it has been found that the diameter remains approximately same at fracture. The material under test was
a. mild steel
b. cast iron
c. glass
d. copper
Q. The shear force of a cantilever beam of length l carrying a uniformly distributed load of w per unit length is
a. zero
b. wl / 4
c. wl / 2
d. wl
Q. The bending moment diagram for a simply supported beam carrying a uniformly distributed load of w per unit length, will be
a. a horizontal line
b. a vertical line
c. an inclined line
d. a parabolic curve