Engineering Mechanics problems
- 1. The unit of power in S.I. units is
Options- A. horsepower
- B. joule
- C. watt
- D. kg-m Discuss
Correct Answer: watt
- 2. The centre of gravity of a right angled triangle lies at its geometrical centre.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Incorrect
- 3. If the gravitational acceleration at any place is doubled, then the weight of a body will be
Options- A. g/2
- B. g
- C. 2g
- D. 2g Discuss
Correct Answer: 2g
- 4. The resultant of two forces P and Q (such that P > Q) acting along the same straight line, but in opposite direction, is given by
Options- A. P + Q
- B. P - Q
- C. P / Q
- D. Q / P Discuss
Correct Answer: P - Q
- 5. The time of flight (t) of a projectile on a horizontal plane is given by
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
- 6. Two equal and opposite parallel forces whose lines of action are different form a couple.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Correct
- 7. When a particle moves along a circular path, its acceleration has two components, one is normal component and the other is tangential component of acceleration.
Options- A. True
- B. False Discuss
Correct Answer: True
- 8. The moment of inertia of a sphere of mass m and radius r, about an axis tangential to it, is
Options- A. 2mr2/3
- B. 2mr2/5
- C. 7mr2/3
- D. 7mr2/5 Discuss
Correct Answer: 7mr2/5
- 9. The velocity ratio for the third system of pulleys is
Options- A. n
- B. n2
- C. 2n
- D. 2n - 1 Discuss
Correct Answer: 2n - 1
- 10. The velocity ratio for the first system of pulleys is(where n is the number of pulleys.)
Options- A. n
- B. n2
- C. 2n
- D. 2n - 1 Discuss
Correct Answer: 2n
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