Discussion
Home ‣ Mechanical Engineering ‣ Engineering Mechanics Comments
- Question
The loss of kinetic energy during elastic impact is zero.
Options- A. Agree
- B. Disagree
- Correct Answer
- Agree
- 1. A machine having an efficiency less than 50%, is known as
Options- A. reversible machine
- B. non-reversible machine
- C. neither reversible nor non-reversible machine
- D. ideal machine Discuss
- 2. If three forces acting at a point are represented in magnitude and direction by the three sides of a triangle, taken in order, then the forces are in equilibrium.
Options- A. Yes
- B. No Discuss
- 3. The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body.
Options- A. equal to
- B. less than
- C. greater than Discuss
- 4. The acceleration of a particle moving with simple harmonic motion, at any instant is given by
Options- A. ?.y
- B. ?2.y
- C. ?2 /y
- D. ?3.y Discuss
- 5. The minimum force required to slide a body of weight W on a rough horizontal plane is
Options- A. W sin ?
- B. W cos ?
- C. W tan ?
- D. none of these Discuss
- 6. Newton's second law motion __________ a relation between force and mass of a moving body.
Options- A. gives
- B. does not give Discuss
- 7. Moment of inertia of a triangular section of base (b) and height (h) about an axis through its base, is
Options- A. bh3/4
- B. bh3/8
- C. bh3/ 12
- D. bh3/ 36 Discuss
- 8. If a given force (or a given system of forces) acting on a body __________ the position of the body, but keeps it in equilibrium, then its effect is to produce internal stress in the body.
Options- A. change
- B. does not change Discuss
- 9. If u1 and u2 are the velocities of two moving bodies in the same direction before impact and v1 and v2 are their velocities after impact, then coefficient of restitution is given by
Options- A.
- B.
- C.
- D.
Discuss
- 10. Concurrent forces are those forces whose lines of action
Options- A. lie on the same line
- B. meet at one point
- C. meet on the same plane
- D. none of these Discuss
Engineering Mechanics problems
Search Results
Correct Answer: non-reversible machine
Correct Answer: Yes
Correct Answer: equal to
Correct Answer: ?2.y
Correct Answer: W tan ?
Correct Answer: gives
Correct Answer: bh3/ 12
Correct Answer: does not change
Correct Answer:
Correct Answer: meet at one point
Comments
There are no comments.More in Mechanical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.