Strength Of Materials MCQ Questions & Answers

71

True stress strain-curve for materials is plotted between

A) Load/original cross-sectional area and change in length/original length B) Load/ instantaneous cross-sectional area and loge (original area/ instantaneous area) C) Load/ instantaneous cross-sectional area and change in length/ original length D) Load/ instantaneous area and instantaneous area/original area

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Answer & Solution

Answer: Option B

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72

When the shear force diagram is a parabolic curve between two points, it indicates that there is a

A) Point load at the two points B) No loading between the two points C) Uniformly distributed load between the two points D) Uniformly varying load between the two points

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Answer & Solution

Answer: Option D

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73

When there is a sudden increase or decrease in shear force diagram between any two points, it indicates that there is a

A) Point load at the two points B) No loading between the two points C) Uniformly distributed load between the two points D) Uniformly varying load between the two points

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Answer & Solution

Answer: Option A

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74

A bolt is made to pass through a tube and both of them are tightly fitted with the help of washers and nuts. If the nut is tightened, then

A) Bolt and tube are under tension B) Bolt and tube are under compression C) Bolt is under compression and tube is under tension D) Bolt is under tension and tube is under compression

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Answer & Solution

Answer: Option D

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75

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

A) Plasticity B) Ductility C) Elasticity D) Malleability

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Answer & Solution

Answer: Option B

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76

The ratio of maximum shear stress developed in a rectangular beam and a circular beam of the same cross-sectional area is

A) $$\frac{2}{3}$$ B) $$\frac{3}{4}$$ C) 1 D) $$\frac{9}{8}$$

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Answer & Solution

Answer: Option D

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77

The pull required to tear off the plate per pitch length is (where p = Pitch of rivets, t = Thickness of plates and $${\sigma _{\text{t}}},\,\tau $$ and $${\sigma _{\text{c}}}$$ = Permissible tensile, shearing and crushing stresses respectively)

A) $$\left( {{\text{p}} - 2{\text{d}}} \right){\text{t}} \times {\sigma _{\text{c}}}$$ B) $$\left( {{\text{p}} - {\text{d}}} \right){\text{t}} \times \tau $$ C) $$\left( {{\text{p}} - {\text{d}}} \right){\text{t}} \times {\sigma _{\text{t}}}$$ D) $$\left( {2{\text{p}} - {\text{d}}} \right){\text{t}} \times {\sigma _{\text{t}}}$$

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Answer & Solution

Answer: Option C

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78

The torsional rigidity of a shaft is given by

A) $$\frac{{\text{T}}}{{\text{J}}}$$ B) $$\frac{{\text{T}}}{\theta }$$ C) $$\frac{{\text{T}}}{{\text{r}}}$$ D) $$\frac{{\text{T}}}{{\text{G}}}$$

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Answer & Solution

Answer: Option B

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79

When a shaft, is subjected to torsion, the shear stress induced in the shaft varies from

A) Minimum at the center to maximum at the circumference B) Maximum at the center to minimum at the circumference C) Zero at the center to maximum at the circumference D) Maximum at the center to zero at the circumference

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Answer & Solution

Answer: Option C

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80

A thin spherical shell of diameter (d) and thickness (t) is subjected to an internal pressure (p). The stress in the shell material is

A) $$\frac{{{\text{pd}}}}{{\text{t}}}$$ B) $$\frac{{{\text{pd}}}}{{2{\text{t}}}}$$ C) $$\frac{{{\text{pd}}}}{{4{\text{t}}}}$$ D) $$\frac{{{\text{pd}}}}{{8{\text{t}}}}$$

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Answer & Solution

Answer: Option C

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Strength Of Materials MCQ Questions &amp; Answers | Mechanical Engineering

Strength Of Materials MCQ Questions & Answers | Mechanical Engineering