MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Machine Kinematics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A body of mass 1 kg is kept on a rough surface is being pulled by a force of 2N, what will be the value of coefficient of friction if it just begins to move. Take g = 10m/s2. |
| A. | 0.2 |
| B. | 0.25 |
| C. | 0 |
| D. | 0.4 |
| Answer» B. 0.25 | |
| 2. |
A body, resting on a rough horizontal plane required a pull of 181 N inclined at 30 to the plane just to move it. It was recorded that a push of 220 N inclined at 30 to the plane just moved the body. Estimate the coefficient of friction. |
| A. | 0.17 |
| B. | 0.2 |
| C. | 0.5 |
| D. | 0.75 |
| Answer» B. 0.2 | |
| 3. |
A body, resting on a rough horizontal plane required a pull of 181 N inclined at 30 to the plane just to move it. It was recorded that a push of 220 N inclined at 30 to the plane just moved the body. Estimate the weight of the body in N. |
| A. | 2000N |
| B. | 2500N |
| C. | 1000N |
| D. | 4000N |
| Answer» D. 4000N | |
| 4. |
A body of mass 1 kg is kept on a rough surface having coefficient of friction = 0.25 being pulled by a force of 2N, after how long will the body come to rest again? |
| A. | 2s |
| B. | 2.5s |
| C. | 0s |
| D. | 4s |
| Answer» D. 4s | |
| 5. |
A body of mass 1 kg is kept on a rough surface having coefficient of friction = 0.25 being pulled by a force of 2N, which frictional force will be acting on the body? |
| A. | Limiting friction |
| B. | Static friction |
| C. | Kinetic friction |
| D. | Rolling friction |
| Answer» C. Kinetic friction | |
| 6. |
A body of mass 1 kg is kept on a rough surface having coefficient of friction = 0.25 being pulled by a force of 2N, what will be the value of friction force in N? |
| A. | 2 |
| B. | 2.5 |
| C. | 0 |
| D. | 4 |
| Answer» B. 2.5 | |
| 7. |
What is the maximum value of static friction? |
| A. | Limiting friction |
| B. | 0 |
| C. | Rolling friction |
| D. | Kinetic friction |
| Answer» B. 0 | |
| 8. |
Static frictional force is equal to the coefficient of friction if the normal reaction is unity. |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
For a body on an inclined plane, the value of coefficient of friction is equal to _____ ( is the angle of friction) |
| A. | Tan |
| B. | Cot |
| C. | Sin |
| D. | Cos |
| Answer» B. Cot | |
| 10. |
The angle at which the body just begins to slide down an incline is known as ________ |
| A. | Angle of inclination |
| B. | Angle of motion |
| C. | Angle of repose |
| D. | Angle of stability |
| Answer» D. Angle of stability | |
| 11. |
Which of the following is true regarding the limiting friction? |
| A. | Its value is equal to the force applied in the opposite direction which tends to move the body |
| B. | Its value is equal to the force applied in the opposite direction which moves the body |
| C. | Its value is equal to .N |
| D. | It is equal to the normal reaction |
| Answer» B. Its value is equal to the force applied in the opposite direction which moves the body | |
| 12. |
The ratio of frictional force to normal reaction is known as _______ |
| A. | Coefficient of friction |
| B. | Coefficient of restitution |
| C. | Coefficient of inertia |
| D. | Coefficient of force |
| Answer» B. Coefficient of restitution | |
| 13. |
If the area of contact between the two surfaces is increased by two times, what will be the effect of it on the force of friction? |
| A. | Increases by two times |
| B. | Decreases by two times |
| C. | Remains same |
| D. | Depends on the surface |
| Answer» D. Depends on the surface | |
| 14. |
The force of friction is independent of the roughness of the surface. |
| A. | True |
| B. | False |
| Answer» C. | |
| 15. |
What is the direction in which the limiting friction acts? |
| A. | Opposite to the direction in which the body tends to move |
| B. | Opposite to the direction in which the body moves |
| C. | In the direction in which the body tends to move |
| D. | In the direction in which the body moves |
| Answer» B. Opposite to the direction in which the body moves | |