Strength of Materials problems
- 1. To ascertain the maximum permissible eccentricity of loads on circular columns, the rule generally followed, is
Options- A. middle half rule of columns
- B. middle third rule of columns
- C. middle fourth rule of columns
- D. none of these. Discuss
Correct Answer: middle fourth rule of columns
- 2. The distance between the centres of adjacent rivets in the same row, is called
Options- A. pitch
- B. lap
- C. gauge
- D. staggered pitch. Discuss
Correct Answer: pitch
- 3. If a steel rod of 20 mm diameter and 5 metres long elongates by 2.275 mm when subjected to an axial pull of 3000 kg, the stress developed, is
Options- A. 9.5541 kg/cm2
- B. 95.541 kg/cm2
- C. 955.41 kg/cm2
- D. 9554.1 kg/cm2. Discuss
Correct Answer: 955.41 kg/cm2
- 4. As the elastic limit reaches, tensile strain
Options- A. increases more rapidly
- B. decreases more rapidly
- C. increases in proportion to the stress
- D. decreases in proportion to the stress. Discuss
Correct Answer: increases more rapidly
- 5. Every material obeys the Hooke's law within its
Options- A. elastic limit
- B. plastic point
- C. limit of proportionality
- D. none of these. Discuss
Correct Answer: limit of proportionality
- 6. The bending moment is maximum on a section where shearing force
Options- A. is maximum
- B. is minimum
- C. is equal
- D. changes sign. Discuss
Correct Answer: changes sign.
- 7. If the width of a simply supported beam carrying an isolated load at its centre is doubled, the deflection of the beam at the centre is changed by
Options- A. 2 times
- B. 4 times
- C. 8 times
- D. 1/2 times
- E. 3 times. Discuss
Correct Answer: 8 times
- 8. If the stress produced by a prismatic bar is equal to the working stress, the area of the cross-section of the prismatic bar, becomes
Options- A. zero
- B. infinite
- C. maximum
- D. minimum. Discuss
Correct Answer: infinite
- 9. The following assumption is not true in the theory of pure torsion :
Options- A. The twist along the shaft is uniform
- B. The shaft is of uniform circular section throughout
- C. Cross-section of the shaft, which is plane before twist remains plane after twist
- D. All radii get twisted due to torsion. Discuss
Correct Answer: All radii get twisted due to torsion.
- 10. Pick up the correct statement from the following :
Options- A. The rate of change of bending moment is equal to rate of shear force
- B. The rate of change of shear force is equal to rate of loading
- C. neither (a) nor (b)
- D. both (a) and (b). Discuss
Correct Answer: both (a) and (b).
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