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- Question
If a body is acted upon by a number of coplaner non-concurrent forces, it may
Options- A. rotate about itself without moving
- B. move in any one direction rotating about itself
- C. be completely at rest
- D. all of these
- Correct Answer
- all of these
- 1. The unit of energy in S.I. units is
Options- A. dyne
- B. watt
- C. kg-m
- D. joule Discuss
- 2. The term 'centroid' is
Options- A. the same as centre of gravity
- B. the point of suspension
- C. the point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis
- D. none of the above Discuss
- 3. The velocity of a body on reaching the ground from a height h, is
Options- A.
- B.
- C.
- D.
Discuss
- 4. If a number of coplaner forces acting at a point be in equilibrium, the sum of clockwise moments must be __________ the sum of anticlockwise moments, about any point.
Options- A. equal to
- B. less than
- C. greater than Discuss
- 5. The centre of gravity of a quadrant of a circle lies along its central radius (r) at a distance of
Options- A. 0.5r
- B. 0.6r
- C. 0.7r
- D. 0.8r Discuss
- 6. In order to completely specify angular displacement by a vector, it must fix
Options- A. direction of the axis of rotation
- B. magnitude of angular displacement
- C. sense of angular displacement
- D. all of these Discuss
- 7. The angle which the normal reaction makes with the resultant reaction is called angle of friction.
Options- A. Agree
- B. Disagree Discuss
- 8. The amount by which the outer edge of the rail is raised, is known as super-elevation.
Options- A. Agree
- B. Disagree Discuss
- 9. A machine having an efficiency greater than 50%, is known as
Options- A. reversible machine
- B. non-reversible machine
- C. neither reversible nor non-reversible machine
- D. ideal machine Discuss
- 10. The angle of inclination of the plane at which the body begins to move down the plane, is called
Options- A. angle of friction
- B. angle of repose
- C. angle of projection
- D. none of these Discuss
Engineering Mechanics problems
Search Results
Correct Answer: joule
Correct Answer: the same as centre of gravity
Correct Answer:
Correct Answer: equal to
Correct Answer: 0.6r
Correct Answer: all of these
Correct Answer: Agree
Correct Answer: Agree
Correct Answer: reversible machine
Correct Answer: angle of friction
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