MCQOPTIONS
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MCQOPTIONS
This section includes 8 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 horizontal bar 1.5 metres long and of small cross-section rotates about vertical axis through one end. It accelerates uniformly from 1200 r.p.m. to 1500 r.p.m. in an interval of 5 seconds. What is the linear velocity at end of the interval ? |
| A. | 188.6 m/s |
| B. | 235.5 m/s |
| C. | 300 m/s |
| D. | 400 m/s |
| Answer» C. 300 m/s | |
| 2. |
A horizontal bar 1.5 metres long and of small cross-section rotates about vertical axis through one end. It accelerates uniformly from 1200 r.p.m. to 1500 r.p.m. in an interval of 5 seconds. What is the linear velocity at the beginning of the interval ? |
| A. | 188.6 m/s |
| B. | 235.5 m/s |
| C. | 300 m/s |
| D. | 400 m/s |
| Answer» B. 235.5 m/s | |
| 3. |
When a particle moves with a uniform velocity, then dv/dt will be |
| A. | infinitely small |
| B. | zero |
| C. | infinitely great |
| D. | none of the mentioned |
| Answer» C. infinitely great | |
| 4. |
When a particle moves along a straight path, then the radius of curvature is |
| A. | infinitely small |
| B. | zero |
| C. | infinitely great |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 5. |
The acceleration of a particle at any instant moving along a circular path in a direction normal to the tangent at that instant and directed towards the centre of the circular path, is known as |
| A. | tangential component |
| B. | normal component |
| C. | parallel component |
| D. | none of the mentioned |
| Answer» C. parallel component | |
| 6. |
The acceleration of a particle at any instant moving along a circular path in a direction tangential to that instant, is known |
| A. | tangential component |
| B. | normal component |
| C. | parallel component |
| D. | none of the mentioned |
| Answer» B. normal component | |
| 7. |
A wheel accelerates uniformly from rest to 2000 r.p.m. in 20 seconds. How many revolutions does the wheel make in attaining the speed of 2000 r.p.m.? |
| A. | 400 |
| B. | 300 |
| C. | 333.4 |
| D. | 200 |
| Answer» D. 200 | |
| 8. |
A wheel accelerates uniformly from rest to 2000 r.p.m. in 20 seconds. What is its angular acceleration? |
| A. | 10.475 rad/s<sup>2</sup> |
| B. | 12 rad/s<sup>2</sup> |
| C. | 14 rad/s<sup>2</sup> |
| D. | 15 rad/s<sup>2</sup> |
| Answer» B. 12 rad/s<sup>2</sup> | |