MCQOPTIONS
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MCQOPTIONS
This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Electromagnetic Theory knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The skin depth of the wave having a frequency of 3MHz and a velocity of 12 m/s is |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 6 |
| Answer» D. 6 | |
| 2. |
The resultant electric field of two components in the x and y direction having amplitudes 6 and 8 respectively is |
| A. | 100 |
| B. | 36 |
| C. | 64 |
| D. | 10 |
| Answer» E. | |
| 3. |
A perfect conductor acts as a |
| A. | Perfect transmitter |
| B. | Perfect reflector |
| C. | Bad transmitter |
| D. | Bad reflector |
| Answer» C. Bad transmitter | |
| 4. |
A perfect dielectric acts as a |
| A. | Perfect transmitter |
| B. | Perfect reflector |
| C. | Bad transmitter |
| D. | Bad reflector |
| Answer» B. Perfect reflector | |
| 5. |
The effective skin resistance of a material with conductivity 120 and skin depth of 2μm is |
| A. | 4.16 kilo ohm |
| B. | 4.16 mega ohm |
| C. | 41.6 kilo ohm |
| D. | 41.6 mega ohm |
| Answer» B. 4.16 mega ohm | |
| 6. |
A_PERFECT_DIELECTRIC_ACTS_AS_A?$ |
| A. | Perfect transmitter |
| B. | Perfect reflector |
| C. | Bad transmitter |
| D. | Bad reflector |
| Answer» B. Perfect reflector | |
| 7. |
The resultant electric field of two components in the x and y direction having amplitudes 6 and 8 respectively is$ |
| A. | 100 |
| B. | 36 |
| C. | 64 |
| D. | 10 |
| Answer» E. | |
| 8. |
A_perfect_conductor_acts_as_a$ |
| A. | Perfect transmitter |
| B. | Perfect reflector |
| C. | Bad transmitter |
| D. | Bad reflector |
| Answer» C. Bad transmitter | |
| 9. |
The_skin_depth_of_the_wave_having_a_frequency_of_3MHz_and_a_velocity_of_12_m/s_is |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 6 |
| Answer» D. 6 | |
| 10. |
The relation between the skin depth and frequency is given b? |
| A. | Skin depth α f |
| B. | Skin depth α 1/f |
| C. | Skin depth α √f |
| D. | Skin depth α 1/√f |
| Answer» E. | |
| 11. |
The skin depth is used to find which parameter? |
| A. | DC resistance |
| B. | AC resistance |
| C. | Permittivity |
| D. | Potential |
| Answer» C. Permittivity | |
| 12. |
The effective skin resistance of a material with conductivity 120 and skin depth of 2μm is$ |
| A. | 4.16 kilo ohm |
| B. | 4.16 mega ohm |
| C. | 41.6 kilo ohm |
| D. | 41.6 mega ohm |
| Answer» B. 4.16 mega ohm | |
| 13. |
Calculate the skin depth of a conductor, having a conductivity of 200 units. The wave frequency is 10 GHz in air. |
| A. | 355.8 |
| B. | 3.558 |
| C. | 35.58 |
| D. | 0.3558 |
| Answer» B. 3.558 | |
| 14. |
The attenuation constant is 0.5 units. The skin depth will be |
| A. | 0.5 |
| B. | 0.25 |
| C. | 2 |
| D. | 4 |
| Answer» D. 4 | |
| 15. |
The skin depth is calculated from the amplitude of the wave. State true/false |
| A. | True |
| B. | False |
| Answer» B. False | |
| 16. |
The skin depth is measured in |
| A. | Meter |
| B. | Millimetre |
| C. | Centimetre |
| D. | Micrometer |
| Answer» E. | |
| 17. |
The skin effect is a phenomenon observed in |
| A. | Insulators |
| B. | Dielectrics |
| C. | Conductors |
| D. | Semiconductors |
| Answer» D. Semiconductors | |