Engineering Mechanics problems
- 1. The unit of moment of inertia of an area is
Options- A. kg-m2
- B. kg-m-s2
- C. kg/m2
- D. m4 Discuss
Correct Answer: m4
- 2. The acceleration of a particle moving with simple harmonic motion is proportional to the displacement of the particle from the mean position.
Options- A. True
- B. False Discuss
Correct Answer: True
- 3. In a framed structure, as shown in the below figure, the forces in the members AB and BC are respectively
Options- A.
(tensile) and 2W (compressive) - B. 2W(tensile) and (compressive)
- C.
(tensile) and (compressive) - D. none of the above Discuss
Correct Answer:
(tensile) and 2W (compressive) - 4. The unit of angular velocity is
Options- A. m/min
- B. rad/s
- C. revolutions/min
- D. both (B) and (C)
- E. none of these Discuss
Correct Answer: both (B) and (C)
- 5. Coefficient of friction depends upon
Options- A. area of contact only
- B. nature of surface only
- C. both (a) and (b)
- D. none of these Discuss
Correct Answer: nature of surface only
- 6. A force acting in the opposite direction to the motion of the body is called force of friction.
Options- A. Agree
- B. Disagree Discuss
Correct Answer: Agree
- 7. For any system of coplaner forces, the condition of equilibrium is that the
Options- A. algebraic sum of the horizontal components of all the forces should be zero
- B. algebraic sum of the vertical components of all the forces should be zero
- C. algebraic sum of moments of all the forces about any point should be zero
- D. all of the above Discuss
Correct Answer: all of the above
- 8. The velocity ratio of a single purchase crab winch can be increased by
Options- A. increasing the length of the handle
- B. increasing the radius of the load drum
- C. increasing the number of teeth of the pinion
- D. all of the above Discuss
Correct Answer: increasing the length of the handle
- 9. A science teacher claimed that Newton's third law of motion is involved while studying the motion of rockets. His statement is
Options- A. justified
- B. not justified Discuss
Correct Answer: justified
- 10. The maximum displacement of a body, from its mean position is called amplitude.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Correct
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