# Strength of Materials MCQ Question with Answer

## Strength of Materials MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

Question No : 15
The tensile strength of the welded joint for double fillet is (where s = Leg or size of the weld, l = Length of weld, and σt = Allowable tensile stress for weld metal)

0.5 s.l.σt
s.l.σt
√2 s.l.σt
2.s.l.σt

Question No : 16
A fletched beam is used to

Change the shape of the beam
Effect the saving in material
Equalise the strength in tension and compression
Increase the cross-section of the beam

Question No : 17
When a body is subjected to three mutually perpendicular stresses, of equal intensity, the ratio of direct stress to the corresponding volumetric strain is known as

Young's modulus
Modulus of rigidity
Bulk modulus
Poisson's ratio

Question No : 18
The ratio of maximum shear stress developed in a rectangular beam and a circular beam of the same cross-sectional area is

2/3
3/4
1
9/8

Question No : 19
The ratio of direct stress to volumetric strain in case of a body subjected to three mutually perpendicular stresses of equal intensity, is equal to

Young's modulus
Bulk modulus
Modulus of rigidity
Modulus of elasticity

Question No : 20
The ultimate tensile stress of mild steel compared to ultimate compressive stress is

Same
More
Less
Unpredictable

Question No : 21
The limit of eccentricity for no tensile conditions for a column of circular section of diameter (D) is

d/4
d/8
d/12
d/16