Strength of Materials problems
- 1. In leaf springs, the maximum bending stress developed in the plates is (where W = Load acting on the spring, l = Span of the spring, n = Number of plates, b = Width of plates, and t = Thickness of plates)
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
- 2. The shear modulus of most materials with respect to the modulus of elasticity is
Options- A. equal to half
- B. less than half
- C. more than half
- D. none of these Discuss
Correct Answer: less than half
- 3. The ultimate tensile stress for mild steel is __________ the ultimate compressive stress.
Options- A. equal to
- B. less than
- C. more than Discuss
Correct Answer: more than
- 4. In a watch, the spring is used to store strain energy. This energy is released
Options- A. to stop the watch
- B. to run the watch
- C. to change the time
- D. all of these Discuss
Correct Answer: to run the watch
- 5. A rectangular beam of length l supported at its two ends carries a central point load W. The maximum deflection occurs
Options- A. at the ends
- B. at l/3 from both ends
- C. at the centre
- D. none of these Discuss
Correct Answer: at the centre
- 6. A closely-coiled helical spring is cut into two halves. The stiffness of the resulting spring will be
Options- A. same
- B. double
- C. half
- D. one-fourth Discuss
Correct Answer: double
- 7. The modulus of elasticity for mild steel is approximately equal to
Options- A. 10 kN/mm2
- B. 80 kN/mm2
- C. 100 kN/mm2
- D. 210 kN/mm2 Discuss
Correct Answer: 210 kN/mm2
- 8. A thick pressure vessel is always used for the generation of steam, as it can withstand high pressures.
Options- A. True
- B. False Discuss
Correct Answer: False
- 9. A beam supported on more than two supports is called
Options- A. simply supported beam
- B. fixed beam
- C. overhanging beam
- D. continuous beam Discuss
Correct Answer: continuous beam
- 10. The assumption made in Euler's column theory is that
Options- 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 Discuss
Correct Answer: all of the above
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