Strength Of Materials MCQ Questions & Answers

A) The failure of column occurs due to buckling alone B) The length of column is very large as compared to its cross-sectional dimensions C) The column material obeys Hooke's law D) All of the above

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Answer: Option D

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The rectangular beam 'A ' has length l, width b and depth d. Another beam 'B' has the same width and depth but length is double that of 'A'. The elastic strength of beam 'B' will be __________ as compared to beam A.

A) Same B) One-half C) One-fourth D) One-eighth

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Answer: Option B

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The rectangular beam 'A' has length l, width b and depth d. Another beam 'B' has the same length and width but depth is double that of 'A'. The elastic strength of beam B will be __________ as compared to beam A.

A) Same B) Double C) Four times D) Six times

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Answer: Option C

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The ultimate tensile stress for mild steel is __________ the ultimate compressive stress.

A) Equal to B) Less than C) More than D) None of these

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Answer: Option C

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In a simple bending theory, one of the assumptions is that the plane sections before bending remain plane after bending. This assumption means that

A) Stress is uniform throughout the beam B) Strain is uniform throughout the beam C) Stress is proportional to the distance from the neutral axis D) Strain is proportional to the distance from the neutral axis

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Answer: Option D

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The simply supported beam 'A' of length '$$l$$' carries a central point load 'W'. Another beam 'B' is loaded with a uniformly distributed load such that the total load on the beam is 'W'. The ratio of maximum deflections between beams 'A' and 'B' is

A) $$\frac{5}{8}$$ B) $$\frac{8}{5}$$ C) $$\frac{5}{4}$$ D) $$\frac{4}{5}$$

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Answer: Option B

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For a simply supported beam of length 'L', when a concentrated load W is applied in the center of the beam, the maximum deflection is

A) $$\frac{{5{\text{W}}{{\text{L}}^3}}}{{384{\text{EI}}}}$$ B) $$\frac{{{\text{W}}{{\text{L}}^3}}}{{384{\text{EI}}}}$$ C) $$\frac{{{\text{W}}{{\text{L}}^3}}}{{348{\text{EI}}}}$$ D) $$\frac{{{\text{W}}{{\text{L}}^3}}}{{48{\text{EI}}}}$$

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Answer: Option D

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The stress at which the extension of the material takes place more quickly as compared to the increase in load, is called

A) Elastic limit B) Yield point C) Ultimate point D) Breaking point

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Answer: Option B

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100

If the depth is kept constant for a beam of uniform strength, then its width will vary in proportional to

A) Bending moment (i.e. M) B) Bending moment² (i.e. M²) C) Bending moment³ (i.e. M³) D) Bending moment⁴ (i.e. M⁴)

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Answer: Option A

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

Strength Of Materials MCQ Questions & Answers | Mechanical Engineering