**Strength of Materials (SoM) Mechanical Engineering MCQ Questions Answers**

1) The energy absorbed in a body, when it is strained within the elastic limits,is known as

a) Strain energy

b) resilience

c) proof resilience

d) modulus of resilience

2) Hardness is the resistance to

a) indentation

b) scratching

c) abrasion

d) all of these

3) Resilience of a material is considered when it is subjected to

a) fatigue

b) creep

c) shock loading

d) resonant condition

4) Which of the following has no unit ?

a) Bulk modulus

b) Kinematic viscosity

c) Surface tension

d) Strain

5) The independent elastic constant for homogeneous and isotropic material are

a) E,G,KV

b) E,G,K

c) E,G,V

d) E,G

6) The number of elastic constant for a othotropic material are

a) 2

b) 3

c) 9

d) 21

7) The maximum values of Poisson’s ratio for an elastic material is

a) 0.25

b) 0.5

c) 0.75

d) 1.0

8) The number of elastic constants for a completely anisotropic elastic material are

a) 3

b) 4

c) 21

d) 25

9) An axially loaded bar is subjected to a normal stress of 173 MPa. The shear in the bar is

a) 75 MPa

b) 86.5 MPa

c) 100 MPa

d) 122.3 MPa

10) The ratio of maximum shear stress to maximum normal stress at any point in a solid circular shaft is

a) 1

b) 1.5

c) 2

d) 1.67