STRENGTH OF MATERIAL MCQ-04

Q.1 The value of poisson's ratio for cast iron is __.

A. 0.25 to 0.45

B. 0.23 to 0.27

C. 0.15 to 0.25

D. 1.05 to 2.00

Ans-: B

Q.2 Which of the following have the poisson's ratio more than unity ?

A. Aluminum

B. Wrought iron

C. Steel

D. None of the above

Ans-: D

Q.3 ______ is the phase of plastic or inelastic action.

A. Creep

B. Strain

C. Elongation

D. Fatigue stress

Ans-: A

Q.4 When the cyclic variation to either load or strain is coincident with respect to time then ______ occur.

A. Creep stress

B. Fatigue stress

C. Tensile strength

D. Impact stress

Ans-: B

Q.5  The elasticity of various materials is controlled by it's 

A. Proof stress

B. Tensile stress

C. Stress at elastic limit

D. Ultimate tensile stress

Ans-: C

Q.6 what happened when a material expands freely due to heating , it will develop_____.

A. Tensile stress

B. Ultimate tensile stress

C. Bending

D. No stress

Ans-: D

Q.7 The stress developed in a material at breaking point in extension is called _____.

A. Breaking stress

B. Proof stress

C. Unit stress

D. Tensile strength

Ans:- A

Q.8 In which stress the load at breaking point or neck area .

A. Rupture stress

B. Tensile stress

C. Ultimate stress

D. None of the above

Ans-: A

Q.9  The property of a material which allows it to be drawn into a smaller section is called ?

A. Ductility

B. Malleability

C. Plasticity

D. Elasticity

Ans-: B

Q.10 Modulus of elasticity in shear is sometimes called the _____.

A. Yield point stress

B. Elastic limit

C. Modulus of rigidity

D. Modulus of resilience

Ans-: C