MCQOPTIONS
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MCQOPTIONS
This section includes 19 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 attenuation coefficient of the wave having a resistance of 15 ohm in a 50 ohm line is |
| A. | 15 |
| B. | 1.5 |
| C. | 0.15 |
| D. | 0.015 |
| Answer» D. 0.015 | |
| 2. |
The waveguides are used in a transmission line for |
| A. | Increasing transmission coefficient |
| B. | Increasing reflection coefficient |
| C. | Decreasing transmission coefficient |
| D. | Decreasing reflection coefficient |
| Answer» B. Increasing reflection coefficient | |
| 3. |
The dimension for a waveguide in dominant mode with a cut off wavelength of 2 units is |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» C. 6 | |
| 4. |
Is the transmission of a frequency 5 GHz possible in waveguides? |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 5. |
The sin θ in the waveguide refers to the ratio of the |
| A. | Frequency to wavelength |
| B. | Wavelength to frequency |
| C. | Cut off frequency to frequency |
| D. | Frequency to cut off frequency |
| Answer» D. Frequency to cut off frequency | |
| 6. |
The cut off wavelength of the TE10 mode having a broad wall dimension of 5cm is |
| A. | 0.1 |
| B. | 1 |
| C. | 10 |
| D. | 0.01 |
| Answer» B. 1 | |
| 7. |
The cut off frequency of the TE01 mode will be |
| A. | mc/2a |
| B. | mc/2b |
| C. | nc/2a |
| D. | nc/2b |
| Answer» E. | |
| 8. |
IS_THE_TRANSMISSION_OF_A_FREQUENCY_5_GHZ_POSSIBLE_IN_WAVEGUIDES??$ |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 9. |
The waveguides are used in a transmission line for$ |
| A. | Increasing transmission coefficient |
| B. | Increasing reflection coefficient |
| C. | Decreasing transmission coefficient |
| D. | Decreasing reflection coefficient |
| Answer» B. Increasing reflection coefficient | |
| 10. |
The_dimension_for_a_waveguide_in_dominant_mode_with_a_cut_off_wavelength_of_2_units_is$ |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» C. 6 | |
| 11. |
The_attenuation_coefficient_of_the_wave_having_a_resistance_of_15_ohm_in_a_50_ohm_line_is |
| A. | 15 |
| B. | 1.5 |
| C. | 0.15 |
| D. | 0.015 |
| Answer» D. 0.015 | |
| 12. |
The sin θ in the waveguide refers to the ratio of th?# |
| A. | Frequency to wavelength |
| B. | Wavelength to frequency |
| C. | Cut off frequency to frequency |
| D. | Frequency to cut off frequency |
| Answer» D. Frequency to cut off frequency | |
| 13. |
The broad wall dimension of a waveguide having a cut off frequency of 7.5 GHz is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 14. |
The cut off wavelength of the TE10 mode having a broad wall dimension of 5cm is |
| A. | 0.1 |
| B. | 1 |
| C. | 10 |
| D. | 0.01 |
| Answer» B. 1 | |
| 15. |
The condition which will satisfy the dimensions of the waveguide is |
| A. | a = b |
| B. | a > b |
| C. | a < b |
| D. | ab = 0 |
| Answer» C. a < b | |
| 16. |
The cut off frequency of the TE01 mode will be |
| A. | mc/2a |
| B. | mc/2b |
| C. | nc/2a |
| D. | nc/2b |
| Answer» E. | |
| 17. |
The cut off frequency of the dominant mode in a TE wave in the line having a and b as 2.5 cm and 1 cm respectively is |
| A. | 4.5 GHz |
| B. | 5 GHz |
| C. | 5.5 GHz |
| D. | 6 GHz |
| Answer» E. | |
| 18. |
The phase constant of a wave is given by |
| A. | ω√(LC) |
| B. | ω√(L/C) |
| C. | ω√(C/L) |
| D. | ω√(1/LC) |
| Answer» B. ‚âà√¨‚àö¬¢‚Äö√Ñ√∂‚àö‚Ć‚àö‚àÇ(L/C) | |
| 19. |
The real part of the propagation constant is the |
| A. | Attenuation constant |
| B. | Phase constant |
| C. | Permittivity |
| D. | Permeability |
| Answer» B. Phase constant | |