Mechanical Engineering - Strength of Materials

21. 

In the torsion equation the term J/R is called

A. shear modulus
B. section modulus
C. polar modulus
D. none of these

Answer: Option C

Explanation:

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22. 

Strain resetters are used to

A. measure shear strain
B. measure linear strain
C. measure volumetric strain
D. relieve strain

Answer: Option B

Explanation:

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23. 

The torque transmitted by a solid shaft of diameter (D) is (where τ = Maximum allowable shear stress)

A. x τ x D3
B. x τ x D3
C. x τ x D3
D. x τ x D3

Answer: Option B

Explanation:

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24. 

When a rectangular beam is loaded transversely, the maximum compressive stress is developed on the

A. top layer
B. bottom layer
C. neutral axis
D. every cross-section

Answer: Option B

Explanation:

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25. 

For a beam, as shown in the below figure, when the load W is applied in the centre of the beam, the maximum deflection is

A.
B.
C.
D.

Answer: Option A

Explanation:

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