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- Question
The moment of the force P about O as shown in the below figure is
Options- A. P x OA
- B. P x OB
- C. P x OC
- D. P x AC
- Correct Answer
- P x OC
- 1. According to lami's theorem
Options- A. the three forces must be equal
- B. the three forces must be at 120° to each other
- C. the three forces must be in equilibrium
- D. if the three forces acting at a point are in equilibrium, then each force is proportional to the sine of the angle between the other two Discuss
- 2. 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
- 3. 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
- 4. Which of the following are vector quantities?
Options- A. Angular displacement
- B. Angular velocity
- C. Angular acceleration
- D. all of these Discuss
- 5. 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
- 6. The coefficient of restitution for inelastic bodies is
Options- A. zero
- B. one
- C. between zero and one
- D. more than one Discuss
- 7. The impact between two lead spheres is approximately equal to an __________ impact.
Options- A. elastic
- B. inelastic Discuss
- 8. In a single threaded worm and worm wheel, the number of teeth on the worm is 50. The diameter of the effort wheel is 100 mm and that of load drum is 50 mm. The velocity ratio is
Options- A. 50
- B. 100
- C. 150
- D. 200 Discuss
- 9. The matter contained in a body, is called
Options- A. impulsive force
- B. mass
- C. weight
- D. momentum Discuss
- 10. The frequency of oscillation of a compound pendulum is(where kG = Radius of gyration about the centroidal axis, and h = Distance between the point of suspension and C.G. of the body.)
Options- A.
- B.
- C.
- D.
Discuss
Engineering Mechanics problems
Search Results
Correct Answer: if the three forces acting at a point are in equilibrium, then each force is proportional to the sine of the angle between the other two
Correct Answer: the change in momentum suffered by rubber ball is more than the lead ball
Correct Answer: 100%
Correct Answer: all of these
Correct Answer: coplaner concurrent forces
Correct Answer: zero
Correct Answer: inelastic
Correct Answer: 100
Correct Answer: mass
Correct Answer:
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