Engineering Mechanics problems
- 1. The amount by which the outer edge of the rail is raised, is known as super-elevation.
Options- A. Agree
- B. Disagree Discuss
Correct Answer: Agree
- 2. 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
Correct Answer: reversible machine
- 3. 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
Correct Answer: angle of friction
- 4. Which of the following statement is correct in connection with projectiles?
Options- A. A path, traced by a projectile in the space, is known as trajectory.
- B. The velocity with which a projectile is projected, is known as the velocity of projection.
- C. The angle, with the horizontal, at which a projectile is projected is known as angle of projection.
- D. all of the above Discuss
Correct Answer: all of the above
- 5. When a body falls freely under gravitational force, it possesses __________ weight.
Options- A. no
- B. minimum
- C. maximum Discuss
Correct Answer: no
- 6. Two forces are acting at an angle of 120°. The bigger force is 40N and the resultant is perpendicular to the smaller one. The smaller force is
Options- A. 20 N
- B. 40 N
- C. 80 N
- D. none of these Discuss
Correct Answer: 20 N
- 7. When the lift is moving upwards with some acceleration, the pressure exerted by a man is __________ proportional to its acceleration.
Options- A. directly
- B. inversely Discuss
Correct Answer: directly
- 8. The maximum mechanical advantage of a lifting machine is
Options- A. 1 + m
- B. 1 - m
- C. 1 / m
- D. m Discuss
Correct Answer: 1 / m
- 9. If three forces acting at a point be represented in magnitude and direction by the three sides of a triangle, taken in order, the forces shall be in equilibrium.
Options- A. True
- B. False Discuss
Correct Answer: True
- 10. If a body is thrown upwards, then the gravitational acceleration is taken as zero.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Incorrect
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