Strength Of Materials MCQ Questions & Answers

31

A beam supported on more than two supports is called

A) Simply supported beam B) Fixed beam C) Overhanging beam D) Continuous beam

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Answer & Solution

Answer: Option D

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32

A beam extending beyond the supports is called

A) Simply supported beam B) Fixed beam C) Overhanging beam D) Cantilever beam

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Answer & Solution

Answer: Option C

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33

When a rectangular bar of length $$l$$, breadth b and thickness t is subjected to an axial pull of P, then linear strain ($$\varepsilon $$) is given by (where E = Modulus of elasticity)

A) $$\varepsilon = \frac{{\text{P}}}{{{\text{btE}}}}$$ B) $$\varepsilon = \frac{{{\text{btE}}}}{{\text{P}}}$$ C) $$\varepsilon = \frac{{{\text{bt}}}}{{{\text{PE}}}}$$ D) $$\varepsilon = \frac{{{\text{PE}}}}{{{\text{bt}}}}$$

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Answer & Solution

Answer: Option A

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34

The shape of cantilever for uniformly distributed load will be

A) Straight line B) Parabolic C) Elliptical D) Cubic

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Answer & Solution

Answer: Option B

Solution:

When a uniformly distributed load is applied to a cantilever beam, the shape of the deflected beam will form a parabolic curve. This is a common phenomenon observed in cantilever beams under such loading conditions.

Therefore, the correct answer is Option B: Parabolic, as the shape of a cantilever under a uniformly distributed load is parabolic in nature. This is a fundamental concept in the field of strength of materials in mechanical engineering.

35

A column with maximum equivalent length has

A) Both ends hinged B) Both ends fixed C) One end fixed and the other end hinged D) One end fixed and the other end free

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Answer & Solution

Answer: Option D

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36

In a stress-strain diagram as shown in the below figure, the curve ‘A’ represents
Strength of Materials mcq question image

A) Mild steel B) Soft brass C) Low carbon steel D) Cold rolled steel

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Answer & Solution

Answer: Option B

Solution:

37

A cube subjected to three mutually perpendicular stress of equal intensity p expenses a volumetric strain

A) $$\frac{{3{\text{p}}}}{{\text{E}}} \times \frac{2}{{{\text{m}} - 1}}$$ B) $$\frac{{3{\text{p}}}}{{\text{E}}} \times \left( {2 - {\text{m}}} \right)$$ C) $$\frac{{3{\text{p}}}}{{\text{E}}} \times \left( {1 - \frac{2}{{\text{m}}}} \right)$$ D) $$\frac{{\text{E}}}{{3{\text{p}}}} \times \frac{2}{{{\text{m}} - 1}}$$

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Answer & Solution

Answer: Option C

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38

A beam of T-section is subjected to a shear force of F. The maximum shear force will occur at the

A) Top of the section B) Bottom of the section C) Neutral axis of the section D) Junction of web and flange

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Answer & Solution

Answer: Option C

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39

Which of the following has no unit?

A) Kinematic viscosity B) Surface tension C) Bulk modulus D) Strain

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Answer & Solution

Answer: Option D

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40

The length of a conical bar is $$l$$, diameter of base is d and weight per unit volume is w. It is fixes at its upper end and hanging freely. The elongation of the bar under the action of its own weight will be

A) $$\frac{{{\text{w}}{l^2}}}{{2{\text{E}}}}$$ B) $$\frac{{{\text{w}}{l^2}}}{{4{\text{E}}}}$$ C) $$\frac{{{\text{w}}{l^2}}}{{6{\text{E}}}}$$ D) $$\frac{{{\text{w}}{l^2}}}{{8{\text{E}}}}$$

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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