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- Question
Two blocks A and B of masses 150 kg and 50 kg respectively are connected by means of a string as shown in the below figure. The tension in all the three strings __________ be same.
Options- A. will
- B. will not
- Correct Answer
- will
- 1. If the efficiency of a lifting machine is kept constant, its velocity ratio is __________ propotional to its mechanical advantage.
Options- A. directly
- B. inversely Discuss
- 2. Non-coplaner non-concurrent forces are those forces which
Options- A. meet at one point, but their lines of action do not lie on the same plane
- B. do not meet at one point and their lines of action do not lie on the same plane
- C. do not meet at one point but their lines of action lie on the same plane
- D. none of the above Discuss
- 3. The wheels of a moving car possess
Options- A. potential energy only
- B. kinetic energy of translation only
- C. kinetic energy of rotation only
- D. kinetic energy of translation and rotation both Discuss
- 4. The efficiency of a lifting machine is the ratio of
Options- A. output to the input
- B. work done by the machine to the work done on the machine
- C. mechanical advantage to the velocity ratio
- D. all of the above Discuss
- 5. A ladder is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act
Options- A. downward at its upper end
- B. upward at its upper end
- C. zero at its upper end
- D. perpendicular to the wall at its upper end Discuss
- 6. In collision of elastic bodies, the coefficient of restitution is the ratio of the relative velocity after impact to the relative velocity before impact.
Options- A. True
- B. False Discuss
- 7. The moment of inertia of a rectangular section 3cm wide and 4cm deep about X-X axis is
Options- A. 9cm4
- B. 12cm4
- C. 16cm4
- D. 20cm4 Discuss
- 8. The three forces of 100 N, 200 N and 300 N have their lines of action parallel to each other but act in the opposite directions. These forces are known as
Options- A. coplaner concurrent forces
- B. coplaner non-concurrent forces
- C. like parallel forces
- D. unlike parallel forces Discuss
- 9. D' Alembert's principle basically depends upon Newton's second law of motion.
Options- A. Correct
- B. Incorrect Discuss
- 10. A pendulum which executes one beat per second is known as
Options- A. simple pendulum
- B. compound pendulum
- C. torsional pendulum
- D. second's pendulum Discuss
Engineering Mechanics problems
Search Results
Correct Answer: directly
Correct Answer: do not meet at one point and their lines of action do not lie on the same plane
Correct Answer: kinetic energy of translation and rotation both
Correct Answer: all of the above
Correct Answer: zero at its upper end
Correct Answer: True
Correct Answer: 16cm4
Correct Answer: unlike parallel forces
Correct Answer: Correct
Correct Answer: second's pendulum
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