231. The tensile test is carried on __________ materials.
ductile
brittle
malleable
plastic
✅ The correct answer is option A.
Strength of Materials MCQs
232. In the below figure, the plastic range occurs
before point A
beyond point A
between points A and D
between points D and E
✅ The correct answer is option B.
233. The section modulus (Z) of a beam is given by
I/y
I.y
y/I
M/I
✅ The correct answer is option A.
234. The resultant stress on an inclined plane which is inclined at an angle θ to the normal cross-section of a body which is subjected to a direct tensile stress (σ) in one plane, is
σ sin θ
σ cos θ
σ sin 2θ
σ cos 2θ
✅ The correct answer is option B.
235. When the shear force diagram is a parabolic curve between two points, it indicates that there is a
point load at the two points
no loading between the two points
uniformly distributed load between the two points
uniformly varying load
✅ The correct answer is option D.
236. The critical neutral axis of a reinforced cement concrete beam is based on the principle that the neutral axis is situated at the centre of gravity of a given section.
TRUE
FALSE
✅ The correct answer is option A.
237. Modulus of rigidity may be defined as the ratio of
linear stress to lateral strain
lateral strain to linear strain
linear stress to linear strain
shear stress to shear
✅ The correct answer is option D.
238. According to Euler’s column theory, the crippling load for a column of length (l) fixed at both ends is __________ the crippling load for a similar column hinged at both ends.
equal to
two times
four times
eight times
✅ The correct answer is option C.
239. In a stress-strain diagram for mild steel, as shown in the below figure, the point A represents
elastic limit
upper yield-point
lower yield point
breaking point
✅ The correct answer is option A.
240. A thin cylindrical shell of diameter (d) length (l) and thickness (t) is subjected to an internal pressure (p). The longitudinal stress in the shell is
pd/t
pd/2t
pd/4t
pd/6t
✅ The correct answer is option C.