MCQOPTIONS
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MCQOPTIONS
This section includes 10 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. |
Ceramics cannot be _________ |
| A. | Oxides |
| B. | Sulfides |
| C. | Nitrides |
| D. | Carbides |
| Answer» C. Nitrides | |
| 2. |
The following figure shows ____________ |
| A. | A dielectric Capacitor |
| B. | Piezoelectric Material |
| C. | Ferroelectric Capacitor |
| D. | Ceramics Capacitor |
| Answer» B. Piezoelectric Material | |
| 3. |
Electrical counterpart of bar magnets are called as ____________ |
| A. | Ceramics |
| B. | Electrical Magnets |
| C. | Electrets |
| D. | Electrostriction |
| Answer» D. Electrostriction | |
| 4. |
A material of thickness 0.5 mm and dielectric constant 2.5 is subjected to 220 V. What will be the polarization produced? |
| A. | 2.78 X 10-6 C/m |
| B. | 3.91 X 10-6 C/m |
| C. | 4.12 X 10-6 C/m |
| D. | 5.84 X 10-6 C/m |
| Answer» E. | |
| 5. |
If the dipole moment of a water drop is 4 X 10-30 m and radius is 1 mm, what is the polarization of the drop? |
| A. | 5.6 X 10-13 m-2 |
| B. | 7.4 X 10-13 m-2 |
| C. | 8.4 X 10-13 m-2 |
| D. | 9.4 X 10-13 m-2 |
| Answer» B. 7.4 X 10-13 m-2 | |
| 6. |
What is the relation between εr and χ? |
| A. | εr = χ |
| B. | εr = 1 + χ |
| C. | εr = 1 – χ |
| D. | εr = χ – 1 |
| Answer» C. εr = 1 – χ | |
| 7. |
Dielectrics which show spontaneous polarization are called as _____________ |
| A. | Pyroelectric |
| B. | Piezoelectric |
| C. | Ferroelectric |
| D. | Centrosymmetric |
| Answer» E. | |
| 8. |
CO is a polar dielectric. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
Which gas is used for insulation? |
| A. | N2 |
| B. | O2 |
| C. | CO |
| D. | CO2 |
| Answer» B. O2 | |
| 10. |
What are the two types of dielectrics? |
| A. | Ferroelectric and Piezoelectric |
| B. | Polar and Non-polar |
| C. | Active and Non-active |
| D. | Stable and Non-stable |
| Answer» C. Active and Non-active | |