MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 12 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_GUIDED_WAVELENGTH_AND_THE_PHASE_CONSTANT_ARE_RELATED_BY?$ |
| A. | 2π/βg = λg |
| B. | 1/βg = λg |
| C. | 1/2πβg = λg |
| D. | βg = λg |
| Answer» B. 1/‚âà√≠‚Äö√¢¬ßg = ‚âà√≠¬¨‚Ñ¢g | |
| 2. |
The phase and group velocities does not depend on which of the following?$ |
| A. | Frequency |
| B. | Wavelength |
| C. | Phase constant |
| D. | Attenuation constant |
| Answer» E. | |
| 3. |
The_phase_velocity_refers_to_a_group_of_waves_and_the_group_velocity_refers_to_a_single_wave._State_true/false.$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
The distance between two successive points in a waveguide is the |
| A. | Guided wavelength |
| B. | 2 x guided wavelength |
| C. | Guided wavelength/2 |
| D. | (guided wavelength)/4 |
| Answer» D. (guided wavelength)/4 | |
| 5. |
The phase velocity of a wave having a phase constant of 4 units and a frequency of 2.5 x 109 radian/sec is (in 108 order? |
| A. | 3.25 |
| B. | 3.75 |
| C. | 6.25 |
| D. | 6.75 |
| Answer» D. 6.75 | |
| 6. |
The group velocity of a wave with a phase velocity of 60 x 109 is (in 106 order) |
| A. | 1.5 |
| B. | 2 |
| C. | 2.5 |
| D. | 3 |
| Answer» B. 2 | |
| 7. |
The phase velocity of a wave having a group velocity of 6 x 106 is (in order of 108 m/s) |
| A. | 2.4 |
| B. | 3 |
| C. | 15 |
| D. | 150 |
| Answer» E. | |
| 8. |
The product of the phase and the group velocities is given by the |
| A. | Speed of light |
| B. | Speed of light/2 |
| C. | 2 x Speed of light |
| D. | (speed of light)/4 |
| Answer» E. | |
| 9. |
The cut off wavelength of the rectangular waveguide in dominant mode with dimensions 6 cm x 4 cm is |
| A. | 12cm |
| B. | 6cm |
| C. | 4cm |
| D. | 2cm |
| Answer» B. 6cm | |
| 10. |
The cut off wavelength and the guided wavelength are given by 0.5 and 2 units respectively. Find the wavelength of the wave. |
| A. | 0.48 |
| B. | 0.32 |
| C. | 0.45 |
| D. | 0.54 |
| Answer» B. 0.32 | |
| 11. |
The term cos θ is given by 2.5. Find the phase velocity.$ |
| A. | 3 |
| B. | 5 |
| C. | 7.5 |
| D. | 2.5 |
| Answer» D. 2.5 | |
| 12. |
In a waveguide, which of the following condition is true always? |
| A. | phase velocity = c |
| B. | group velocity = c |
| C. | phase velocity > c |
| D. | phase velocity < c |
| Answer» D. phase velocity < c | |