Strength of Materials problems
- 1. A beam of length L is pinned at both ends and is subjected to a concentrated bending couple of moment M at its centre. The maximum bending moment in the beam is
Options- A. M
- B. M/2
- C. M/3
- D. ML/2 Discuss
Correct Answer: M
- 2. If the shear force along a section of a beam is zero, the bending moment at the section is
Options- A. zero
- B. maximum
- C. minimum
- D. average of maximum-minimum
- E. none of these. Discuss
Correct Answer: maximum
- 3. A uniform girder simply supported at its ends is subjected to a uniformly distributed load over its entire length and is propped at the centre so as to neutralise the deflection. The net B.M. at the centre will be
Options- A. WL
- B.
- C.
- D.
- E.
Discuss
Correct Answer:
- 4. Pick up the incorrect statement
Options- A. The cross-sectional area of the welded member is effective
- B. A welded joint develops strength of its parent metal
- C. Welded joints provide rigidity
- D. Welded joints have better finish
- E. Welding takes more time than riveting. Discuss
Correct Answer: Welding takes more time than riveting.
- 5. In a tension test, the yield stress is 300 kg/cm2, in the octa hedral shear stress at the point is:
Options- A. 100 2 kg/cm2
- B. 150 2 kg/cm2
- C. 200 2 kg/cm
- D. 250 2 kg/cm2. Discuss
Correct Answer: 100 2 kg/cm2
- 6. A shaft turning 150 r.p.m. is subjected to a torque of 150 kgm. Horse power transmitted by the shaft is
Options- A. ?
- B. 10 ?
- C. ?2
- D. 1/? Discuss
Correct Answer: 10 ?
- 7. The minimum number of rivets for the connection of a gusset plate, is
Options- A. 1
- B. 2
- C. 3
- D. 4 Discuss
Correct Answer: 2
- 8. 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. 1/2
- B. 1/8
- C. 2
- D. 8
- E. 4 Discuss
Correct Answer: 1/2
- 9. The deflection of any rectangular beam simply supported, is
Options- A. directly proportional to its weight
- B. inversely proportional to its width
- C. inversely proportional to the cube of its depth
- D. directly proportional to the cube of its length
- E. none of these. Discuss
Correct Answer: inversely proportional to the cube of its depth
- 10. In a beam, the neutral plane
Options- A. may be its centre
- B. passes through the C.G. of the area of cross-section
- C. does not change during deformation
- D. none of these. Discuss
Correct Answer: does not change during deformation
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