MCQOPTIONS
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MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A torque of 2 10-4 Nm is applied to produce an angular acceleration of 4rad/s2 in a rotating body. What is the moment of inertia of the body? |
| A. | 0.5 kgm<sup>2</sup> |
| B. | 5 10<sup>4</sup> kgm<sup>2</sup> |
| C. | 0.5 10<sup>-4</sup> kgm<sup>2</sup> |
| D. | 0.5 10<sup>4</sup> kgm<sup>2</sup> |
| Answer» D. 0.5 10<sup>4</sup> kgm<sup>2</sup> | |
| 2. |
Calculate the moment of inertia of the earth about its diameter, taking it to be a sphere of 1025kg and diameter 12800km. |
| A. | 1.64 kgm<sup>2</sup> |
| B. | 16.4 10<sup>38</sup> kgm<sup>2</sup> |
| C. | 1.64 10<sup>38</sup> kgm<sup>2</sup> |
| D. | 0 |
| Answer» D. 0 | |
| 3. |
The moment of inertia of a uniform circular disc about its diameter is 100 gcm2. What is its moment of inertia about an axis perpendicular to its plane. |
| A. | 500 gcm<sup>2</sup> |
| B. | 100 gcm<sup>2</sup> |
| C. | 200 gcm<sup>2</sup> |
| D. | 700 gcm<sup>2</sup> |
| Answer» D. 700 gcm<sup>2</sup> | |
| 4. |
The flying wheel attached to the shaft of steam engine works on the principle of ___________ |
| A. | Centripetal action |
| B. | Moment of inertia |
| C. | Newton s third law of motion |
| D. | Conservation of momentum |
| Answer» C. Newton s third law of motion | |
| 5. |
On being displaced, the centre of mass of unstable equilibrium goes ___________ |
| A. | Higher |
| B. | Neither higher nor lower |
| C. | First higher and then lower |
| D. | Lower |
| Answer» E. | |