MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Materials Metallurgy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the dielectric constant of Nylon 6, 6 at 60 Hz? |
| A. | 3.5 |
| B. | 4 |
| C. | 7 |
| D. | 8 |
| Answer» C. 7 | |
| 2. |
What is the dielectric strength of mica? |
| A. | 10 * 106 Vm-1 |
| B. | 100 * 106 Vm-1 |
| C. | 25 * 106 Vm-1 |
| D. | 15 * 106 Vm-1 |
| Answer» C. 25 * 106 Vm-1 | |
| 3. |
Polarization occurring due to magnetic moment is known as ______ |
| A. | Ionic |
| B. | Electronic |
| C. | Orientation |
| D. | Space charge |
| Answer» D. Space charge | |
| 4. |
Which polarization process does this figure represent? |
| A. | Ionic |
| B. | Electronic |
| C. | Orientation |
| D. | Space charge |
| Answer» C. Orientation | |
| 5. |
POLARIZATION_OCCURRING_DUE_TO_MAGNETIC_MOMENT_IS_KNOWN_AS_______?$ |
| A. | Ionic |
| B. | Electronic |
| C. | Orientation |
| D. | Space charge |
| Answer» D. Space charge | |
| 6. |
What is the dielectric constant of Nylon 6, 6 at 60 Hz?$ |
| A. | 3.5 |
| B. | 4 |
| C. | 7 |
| D. | 8 |
| Answer» C. 7 | |
| 7. |
What is the dielectric strength of mica?$ |
| A. | 10 * 10<sup>6</sup> Vm<sup>-1</sup> |
| B. | 100 * 10<sup>6</sup> Vm<sup>-1</sup> |
| C. | 25 * 10<sup>6</sup> Vm<sup>-1</sup> |
| D. | 15 * 10<sup>6</sup> Vm<sup>-1</sup> |
| Answer» C. 25 * 10<sup>6</sup> Vm<sup>-1</sup> | |
| 8. |
The electrical response of a crystal is known as _______ |
| A. | Dielectric strength |
| B. | Dielectric constant |
| C. | Piezoelectric effect |
| D. | Hysteresis |
| Answer» D. Hysteresis | |
| 9. |
What is the electric polarizability of helium? |
| A. | 0.18 * 10<sup>-40</sup> Fm<sup>2</sup> |
| B. | 0.35 * 10<sup>-40</sup> Fm<sup>2</sup> |
| C. | 1.43 * 10<sup>-40</sup> Fm<sup>2</sup> |
| D. | 3.54 * 10<sup>-40</sup> Fm<sup>2</sup> |
| Answer» B. 0.35 * 10<sup>-40</sup> Fm<sup>2</sup> | |
| 10. |
Which of the following factors are relevant for change in dielectric strength? |
| A. | Decreases with a decrease in thickness |
| B. | Decreases with a decrease in temperature |
| C. | Decreases with an increase in humidity |
| D. | Decreases with a decrease in frequency |
| Answer» D. Decreases with a decrease in frequency | |
| 11. |
What is the charge of an electron? |
| A. | 1.602 * 10<sup>-16</sup> |
| B. | 1.602 * 10<sup>-17</sup> |
| C. | 1.602 * 10<sup>-18</sup> |
| D. | 1.602 * 10<sup>-19</sup> |
| Answer» E. | |
| 12. |
How is the dielectric strength denoted as? |
| A. | s<sup>-1</sup> |
| B. | Vm<sup>-1</sup> |
| C. | Fm<sup>2</sup> |
| D. | CV<sup>-1</sup> |
| Answer» C. Fm<sup>2</sup> | |
| 13. |
What is the unit of polarization? |
| A. | Cm |
| B. | Vm<sup>-1</sup> |
| C. | Cm<sup>-2</sup> |
| D. | Fm<sup>2</sup> |
| Answer» D. Fm<sup>2</sup> | |
| 14. |
What is the value of dielectric constant of free space? |
| A. | 8.854 * 10<sup>-9</sup> F m<sup>-1</sup> |
| B. | 8.854 * 10<sup>-12</sup> F <sup>-1</sup> |
| C. | 8.854 * 10<sup>-15</sup> F <sup>-1</sup> |
| D. | 8.854 * 10<sup>-6</sup> F <sup>-1</sup> |
| Answer» C. 8.854 * 10<sup>-15</sup> F <sup>-1</sup> | |