Discussion
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- Question
The potential energy stored by a spring in compression, is called strain energy.
Options- A. Yes
- B. No
- Correct Answer
- Yes
- 1. Which of the following statement is incorrect?
Options- A. A force acting in the opposite direction to the motion of the body is called force of friction.
- B. The ratio of the limiting friction to the normal reaction is called coefficient of friction.
- C. A machine whose efficiency is 100% is known as an ideal machine.
- D. The velocity ratio of a machine is the ratio of load lifted to the effort applied. Discuss
- 2. If P is the force acting on the body, m is the mass of the body and a is the acceleration of the body, then according to Newton's second law of motion,
Options- A. P + m.a = 0
- B. P - m.a = 0
- C. P x m.a = 0
- D. P/m.a = 0 Discuss
- 3. The energy possessed by a body, for doing work by virtue of its position, is called
Options- A. potential energy
- B. kinetic energy
- C. electrical energy
- D. chemical energy Discuss
- 4. If a body is thrown upwards, then the gravitational acceleration is taken as zero.
Options- A. Correct
- B. Incorrect Discuss
- 5. 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
- 6. In a framed structure, as shown in the below figure, the force in the member AB is __________ the force in member AC.
Options- A. half
- B. equal to
- C. double Discuss
- 7. The forces, which meet at one point and their lines of action also lie on the same plane, are known as
Options- A. coplaner concurrent forces
- B. coplaner non-concurrent forces
- C. non-coplaner concurrent forces
- D. non-coplaner non-concurrent forces Discuss
- 8. Which of the following are vector quantities?
Options- A. Angular displacement
- B. Angular velocity
- C. Angular acceleration
- D. all of these Discuss
- 9. An ideal machine is one whose efficiency is
Options- A. between 60 and 70 %
- B. between 70 and 80%
- C. between 80 and 90%
- D. 100% Discuss
- 10. A lead ball with a certain velocity is made to strike a wall, it falls down, but rubber ball of same mass and with same velocity strikes the same wall, it rebounds. Select the correct reason from the following:
Options- A. both the balls undergo an equal change in momentum
- B. the change in momentum suffered by rubber ball is more than the lead ball
- C. the change in momentum suffered by rubber ball is less than the lead ball
- D. none of the above Discuss
Engineering Mechanics problems
Search Results
Correct Answer: The velocity ratio of a machine is the ratio of load lifted to the effort applied.
Correct Answer: P - m.a = 0
Correct Answer: potential energy
Correct Answer: Incorrect
Correct Answer: True
Correct Answer: half
Correct Answer: coplaner concurrent forces
Correct Answer: all of these
Correct Answer: 100%
Correct Answer: the change in momentum suffered by rubber ball is more than the lead ball
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