SECTION-5

#### Strength of Material MCQ

##### Q31. Hooke’s law holds good upto

(a) proportional
(b) yield point
(c) elastic limit
(d) plastic limit.

Ans:(a) proportional

##### Q32. The property of a material by virtue of which a body returns to its original shape after removal of the load is known as

(a) ductility
(b) plasticity
(c) elasticity
(d) resilience.

Ans:(c) elasticity

(a) P/lAE
(b) PE/Al
(c) Pl AE
(d)Al/PE

Ans:(c) Pl AE

##### Q34. The modulus of elasticity (E) and modulus of rigidity (C) are related by

$(a) C=\frac{m E}{3(m-2)}$

$(b) C=\frac{m E}{2(m+2)}$

$(c) C=\frac{3(m-2)}{m E}$

$(d) C=\frac{2(m+2)}{m E}$

where 1/m= Poisson’s ratio.

Ans:$(b) C=\frac{m E}{2(m+2)}$

##### Q35. The modulus of elasticity (E) and bulk modulus (K) are related by

$(a)K=\frac{m E}{3(m-2)}$

$(b) K=\frac{m E}{2(m+2)}$

$(c) K=\frac{3(m-2)}{m E}$

$(d) K=\frac{2(m+2)}{m E}$

where 1/m= Poisson’s ratio.

Ans:$(a)K=\frac{m E}{3(m-2)}$

(a) 2/3
(b) 1/3
(c) 4/3
(d) 1.0.

Ans:(a) 2/3

##### Q37. The relation between modulus of elasticity (E), modulus of rigidity (C) and bulk modulus (K) is given by

(a) E =/C+9K
(b) E =9KC/C+3K
(c) E = C+9K/3KC
(d) E =C+3K/9KC

Ans:(c) E = C+9K/3KC

(a) 2/3
(b) 2/5
(c) 3/5
(d) 4/5.

Ans:(c) 3/5

##### Q39. The work done in producing strain on a material per unit volume is called

(a) resilience
(b) ductility
(c) elasticity
(d) plasticity.

Ans:(a) resilience

##### Q40. The properly by virtue of which a metal can be beaten into plates is called

(a) ductility
(b) malleability
(c) resilience
(d) plasticity.

Ans:(b) malleability

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##### Read More Sections of Strength of Material

Each section contains maximum 80 Questions. To practice more questions visit other sections.

Strength of Material MCQ – Section-1

Strength of Material MCQ – Section-2

Strength of Material MCQ – Section-3

Strength of Material MCQ – Section-4

Strength of Material MCQ – Section-5

Strength of Material MCQ – Section-6