Engineering Mechanics problems
- 1. The path of the projectile is a parabola.
Options- A. True
- B. False Discuss
Correct Answer: True
- 2. Mass moment of inertia of a uni form thin rod of mass M and length (l) about its mid-point and perpendicular to its length is
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
- 3. One watt is equal to
Options- A. 0.1 joule/s
- B. 1 joule/s
- C. 10 joules/s
- D. 100 joules/s Discuss
Correct Answer: 1 joule/s
- 4. The bodies which rebound after impact are called
Options- A. inelastic bodies
- B. elastic bodies
- C. neither elastic nor inelastic bodies
- D. none of these Discuss
Correct Answer: elastic bodies
- 5. A smooth cylinder lying on its convex surface remains in __________ equilibrium.
Options- A. stable
- B. unstable
- C. neutral Discuss
Correct Answer: unstable
- 6. A body of weight W is required to move up on rough inclined plane whose angle of inclination with the horizontal is ?. The effort applied parallel to the plane is given by(where ? = tan? = Coefficient of friction between the plane and the body.)
Options- A. P = W tan?
- B. P = W tan(? + ?)
- C. P = W (sin? + ?cos?)
- D. P = W (cos? + ?sin?) Discuss
Correct Answer: P = W (sin? + ?cos?)
- 7. A redundant frame is also called __________ frame.
Options- A. perfect
- B. imperfect
- C. deficient Discuss
Correct Answer: imperfect
- 8. If two blocks of equal mass are attached to the two ends of a light string and one of the blocks is placed over a smooth horizontal plane while the other is hung freely after passing over a smooth pulley, then the two blocks will have some motion.
Options- A. Agree
- B. Disagree Discuss
Correct Answer: Agree
- 9. The centre of gravity of an equilateral triangle with each side a, is __________ from any of the three sides.
Options- A. 3a/2
- B. 23a
- C. a/23
- D. 32a Discuss
Correct Answer: a/23
- 10. Which of the following is an equation of linear motion?(where, u and v = Initial and final velocity of the body, a = Acceleration of the body, and s = Displacement of the body in time t seconds.)
Options- A. v = u + a.t
- B. s = u.t + 1/2 a.t2
- C. v2 = u2+2a.s
- D. all of these Discuss
Correct Answer: all of these
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