Mechanical Engineering - Strength of Materials
Exercise :: Strength of Materials - Section 3
| 1. |
The shear force and bending moment are zero at the free end of a cantilever beam, if it carries a |
| A. |
point load at the free end | | B. |
point load at the middle of its length | | C. |
uniformly distributed load over the whole length | | D. |
none of the above |
Answer: Option C
Explanation:
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| 2. |
A rod is enclosed centrally in a tube and the assembly is tightened by rigid washers. If the assembly is subjected to a compressive load, then |
| A. |
rod is under compression | | B. |
tube is under compression | | C. |
both rod and tube are under compression | | D. |
tube is under tension and rod is under compression |
Answer: Option C
Explanation:
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| 3. |
A bar of length L metres extends by l mm under a tensile force of P. The strain produced in the bar is |
Answer: Option D
Explanation:
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| 4. |
A shaft revolving at ω rad / s transmits torque (T) in N-m. The power developed is |
| A. |
T.ω watts | | B. |
2 π Tω watts | | C. |
 watts | | D. |
 watts |
Answer: Option A
Explanation:
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| 5. |
The unit of modulus of elasticity is same as those of |
| A. |
stress, strain and pressure | | B. |
stress, force and modulus of rigidity | | C. |
strain, force and pressure | | D. |
stress, pressure and modulus of rigidity |
Answer: Option D
Explanation:
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