Multiple Choice Questions (MCQ) on Stress and Strain
Multiple Choice Questions (MCQ) on Stress and Strain
1-Type of stress that causes dilation is known as
(A) Hydrostatic stress
(B) Deviatoric stress
(C) Shear stress
(D) Thermal stress
2-The Bulk modulus (K) of a material having Young’s Modulus (E) = 200 GPa and Modulus of Rigidity (G) = 80 GPa is
(A) 160 GPa
(B) 250 GPa
(C) 133.3 GPa
(D) 233.3 GPa
3-The ratio of change of dimension of the body to the original dimension is known as
(A) Pressure
(B) Force
(C) Stress
(D) Strain
4-The shearing stress in a piece of structural steel is 100 MPa. If the elastic modulus is 200 GPa and the Poisson’s ratio is 0.25, then the shearing strain γ would be
(A) 800
(B) 1.25
(C) 0.8 rad
(D) 0.00125 rad
5-The ratio of axial deformation to the original length of the body is known as
(A) Poisson’s ratio
(B) Linear Strain
(C) Linear stress
(D) Lateral Strain
6-The stress induced in a body, when subjected to two equal and opposite forces which are acting tangentially across the section is known as
(A) Bending stress
(B) Shear stress
(C) Tensile stress
(D) Compressive stress
7-A plane element is subjected to a shearing stresses of 50MPa. The principal stresses existing in this element and the directions of the planes on which they occur would be _____ at ______ respectively.
(A) 7 MPa at 90°
(B) 7 MPa at 45°
(C) 50 MPa at 90°
(D) 50 MPa at 45°
8-If longitudinal strain is tensile, the lateral strain will be ___
(A) not determined
(B) zero
(C) compressive
(D) tensile
9-The ratio of ultimate stress to the permissible stress is called ___
(A) Load factor
(B) Stress factor
(C) Design factor
(D) Factor of safety
10-The ratio of maximum bending stress to maximum shear stress on the cross-section when a shaft is simultaneously subjected to torque T and bending moment M is
(A) 2M/T
(B) 2T/M
(C) M/T
(D) T/M
11-Complimentary shear stresses are the shear stresses acting on a set of planes which are
(A) orthogonal to each other
(B) at an angle of 45° to each other
(C) having maximum normal stress
(D) having zero normal stress
12-Modulus of elasticity (E) is defined in terms of bulk modulus (K) and Poisson’s ratio (1/m) as
(A) 3K [1-(m/2)]
(B) 3K [1-(2/m)]
(C) 3K [1-(1/m)]
(D) 3K [1+(2/m)]
13-Ratio of maximum shear stress to average shear stress is 4/3 in a ___ section.
(A) hexagonal
(B) circular
(C) triangular
(D) rectangular
14-Poisson’s ratio is defined as the ratio of
(A) lateral strain to longitudinal strain
(B) lateral stress to longitudinal stress
(C) longitudinal strain to lateral strain
(D) longitudinal stress to linear stress
15-Maximum shear stress by Mohr’s circle will be equal to
(A) Distance between origin and farthest point of circle on X-axis
(B) Distance between origin and nearest point of circle on X-axis
(C) Its radius
(D) Its diameter
ANSWERS:
1-(A), 2-(C), 3-(D), 4-(D), 5-(B), 6-(B), 7-(D), 8-(C), 9-(D), 10-(A), 11-(A), 12-(B), 13-(B), 14-(A), 15-(C)