Strength Of Materials MCQ Questions & Answers

21

The object of caulking in a riveted joint is to make the joint

A) Free from corrosion B) Stronger in tension C) Free from stresses D) Leak proof

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Answer & Solution

Answer: Option D

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22

Which of the following is the correct torsion equation?

A) $$\frac{{\text{M}}}{I} = \frac{\sigma }{{\text{y}}} = \frac{{\text{E}}}{{\text{R}}}$$ B) $$\frac{{\text{T}}}{{\text{J}}} = \frac{\tau }{{\text{R}}} = \frac{{{\text{C}}\theta }}{l}$$ C) $$\frac{{\text{M}}}{{\text{R}}} = \frac{{\text{T}}}{{\text{J}}} = \frac{{{\text{C}}\theta }}{l}$$ D) $$\frac{{\text{T}}}{l} = \frac{\tau }{{\text{J}}} = \frac{{\text{R}}}{{{\text{C}}\theta }}$$

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Answer & Solution

Answer: Option B

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23

Every direct stress is always accompanied by a strain in its own direction and an opposite kind of strain in every direction, at right angles to it. Such a strain is known as

A) Linear strain B) Lateral strain C) Volumetric strain D) Shear strain

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Answer & Solution

Answer: Option B

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24

When a change in length takes place, the strain is known as

A) Linear strain B) Lateral strain C) Volumetric strain D) Shear strain

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Answer & Solution

Answer: Option A

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25

When a body is subjected to three mutually perpendicular stresses, of equal intensity, the ratio of direct stress to the corresponding volumetric strain is known as

A) Young's modulus B) Modulus of rigidity C) Bulk modulus D) Poisson's ratio

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Answer & Solution

Answer: Option C

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26

For the beam shown in the below figure, the shear force diagram between A and B is
Strength of Materials mcq question image

A) A horizontal line B) A vertical line C) An inclined line D) A parabolic curve

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Answer & Solution

Answer: Option D

Solution:

27

In a prismatic member made of two materials so joined that they deform equally under axial stress, the unit stresses in two materials are

A) Equal B) Proportional to their respective moduli of elasticity C) Inversely proportional to their moduli of elasticity D) Average of the sum of moduli of elasticity

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Answer & Solution

Answer: Option B

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28

For a beam, as shown in the below figure, when the load W is applied in the center of the beam, the maximum deflection is
Strength of Materials mcq question image

A) $$\frac{{{\text{W}}{l^3}}}{{48{\text{E}}I}}$$ B) $$\frac{{5{\text{W}}{l^3}}}{{384{\text{E}}I}}$$ C) $$\frac{{{\text{W}}{l^3}}}{{392{\text{E}}I}}$$ D) $$\frac{{{\text{W}}{l^3}}}{{384{\text{E}}I}}$$

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Answer & Solution

Answer: Option A

Solution:

29

When a body is subjected to a direct tensile stress (σ) in one plane, the maximum shear stress is __________ the maximum normal stress.

A) Equal to B) One-half C) Two-third D) Twice

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Answer & Solution

Answer: Option B

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30

The unit of strain is

A) N-mm B) N/mm C) mm D) No unit

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Answer & Solution

Answer: Option D

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

Strength Of Materials MCQ Questions & Answers | Mechanical Engineering