161. In a thin cylindrical shell subjected to an internal pressure p, the ratio of longitudinal stress to the hoop stress is
1-Feb
3-Apr
1
1.5
✅ The correct answer is option A.
Strength of Materials MCQs
162. The strain energy stored in a hollow circular shaft of outer diameter (D) and inner diameter (d) subjected to shear stress is
x Volume of shaft
x Volume of shaft
x Volume of shaft
x Volume of shaft
✅ The correct answer is option D.
163. The rectangular beam ‘A ‘ has length l, width b and depth d. Another beam ‘B’ has the same width and depth but length is double that of ‘A’. The elastic strength of beam ‘B’ will be __________ as compared to beam A.
same
one-half
one-fourth
one-eighth
✅ The correct answer is option B.
164. A riveted joint may fail by
tearing of the plate at an edge
tearing of the plate across a row of rivets
shearing of rivets
any one of these
✅ The correct answer is option D.
165. The strain energy stored in a body, when suddenly loaded, is __________ the strain energy stored when same load is applied gradually.
equal to
one-half
twice
four times
✅ The correct answer is option D.
166. In the below figure, curve C represents soft brass.
TRUE
FALSE
✅ The correct answer is option B.
167. The product of the tangential force acting on the shaft and its distance from the axis of the shaft (i.e. radius of shaft) is known as
bending moment
twisting moment
torsional rigidity
flexural rigidity
✅ The correct answer is option B.
168. If there is a fall in the temperature of a composite body, then a member having greater coefficient of linear expansion will be subjected to compressive stress.
TRUE
FALSE
✅ The correct answer is option B.
169. The torsional rigidity of a shaft is expressed by the torque required to produce a twist of one radian per unit length of a shaft.
TRUE
FALSE
✅ The correct answer is option A.
170. The maximum shear stress of a beam of triangular section occurs above the neutral axis,
Correct
Incorrect
✅ The correct answer is option A.