Discussion
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- Question
A shaft revolving at ? rad / s transmits torque (T) in N-m. The power developed is
Options- A. T.? watts
- B. 2 ? T? watts
- C.
watts - D.
watts - Correct Answer
- T.? watts
- 1. Strain is equal to (where l = Original length, and ?l = Change in length)
Options- A. l/?l
- B. ?l/l
- C. l.?l
- D. l + ?l Discuss
- 2. In the below figure, the point E represents the maximum stress.
Options- A. True
- B. False Discuss
- 3. When a bar of length l, width b and thickness t is subjected to a pull of P, its
Options- A. length, width and thickness increases
- B. length, width and thickness decreases
- C. length increases, width and thickness decreases
- D. length decreases, width and thickness increases Discuss
- 4. Which of the following statement is correct?
Options- A. The stress is the pressure per unit area.
- B. The strain is expressed in mm.
- C. Hook's law holds good upto the breaking point.
- D. Stress is directly proportional to strain within elastic limit. Discuss
- 5. The volumetric strain is the ratio of the
Options- A. original thickness to the change in thickness
- B. change in thickness to the original thickness
- C. original volume to the change in volume
- D. change in volume to the original volume Discuss
- 6. The unit of modulus of elasticity is same as those of
Options- A. stress, strain and pressure
- B. stress, force and modulus of rigidity
- C. strain, force and pressure
- D. stress, pressure and modulus of rigidity Discuss
- 7. The pull required to crush the rivet per pitch length is
Options- A. p.t.?t
- B. d.t.?c
- C. ?/4 x d2 x ?t
- D. ?/4 x d2 x ?c Discuss
- 8. The breaking stress is __________ the ultimate stress.
Options- A. equal to
- B. less than
- C. greater than Discuss
- 9. The design of thin cylindrical shells is based on
Options- A. hoop stress
- B. longitudinal stress
- C. arithmetic mean of the hoop and the longitudinal stress
- D. geometric mean of the hoop and longitudinal stress Discuss
- 10. Which of the following statement is wrong?
Options- A. In the theory of simple bending, the assumption is that the plane sections before bending remains plane after bending.
- B. In a beam subjected to bending moment, the strain is directly proportional to the distance from the neutral axis.
- C. At the neutral axis of a beam, the bending stress is maximum.
- D. The bending stress in a beam is inversely proportional to the section modulus. Discuss
Strength of Materials problems
Search Results
Correct Answer: ?l/l
Correct Answer: False
Correct Answer: length increases, width and thickness decreases
Correct Answer: Stress is directly proportional to strain within elastic limit.
Correct Answer: change in volume to the original volume
Correct Answer: stress, pressure and modulus of rigidity
Correct Answer: d.t.?c
Correct Answer: less than
Correct Answer: hoop stress
Correct Answer: At the neutral axis of a beam, the bending stress is maximum.
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