MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Microwave Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In a diode frequency multiplier, an input signal of frequency fo applied to the diode is terminated with_________ at all frequencies other than required harmonic. |
| A. | real impedances |
| B. | reactive impedance |
| C. | complex impedance |
| D. | none of the mentioned |
| Answer» C. complex impedance | |
| 2. |
REACTIVE_MULTIPLIERS_HAVE_A_DISADVANTAGE_THAT_THEY_CANNOT_BE_USED_AT_VERY_HIGH_FREQUENCIES_AND_THEY_BECOME_LESS_EFFICIENT.?$ |
| A. | true |
| B. | false |
| Answer» B. false | |
| 3. |
For_a_resistive_frequency_multiplier_of_multiplication_factor_2,_the_maximum_theoretical_conversion_efficiency_is:$ |
| A. | 50 % |
| B. | 25 % |
| C. | 75 % |
| D. | 12.5 % |
| Answer» C. 75 % | |
| 4. |
Resistive multipliers are more efficient as compared to reactive multipliers? |
| A. | true |
| B. | false |
| Answer» C. | |
| 5. |
In a diode frequency multiplier, an input signal of frequency fo applied to the diode is terminated with_________ at all frequencies other than required harmonic. |
| A. | real impedances |
| B. | reactive impedance |
| C. | complex impedance |
| D. | none of the mentioned |
| Answer» C. complex impedance | |
| 6. |
If a frequency multiplier has a multiplication factor of 10, then the increase in noise level due to frequency multiplication is: |
| A. | 10 dB |
| B. | 20 dB |
| C. | 25 db |
| D. | 15 dB |
| Answer» C. 25 db | |
| 7. |
A major disadvantage of frequency multipliers is that they multiply the noise factor along with frequency. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 8. |
A reactive diode multiplier uses _______ as the key electronic component for frequency multiplication. |
| A. | zener diode |
| B. | light emitting diode |
| C. | varactor diode |
| D. | Gunn diode |
| Answer» D. Gunn diode | |
| 9. |
The major drawback of frequency multipliers is that they have: |
| A. | higher attenuation |
| B. | complex construction methods |
| C. | complex design |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 10. |
__________ is an example for a frequency multiplier. |
| A. | resistor |
| B. | inductor |
| C. | capacitor |
| D. | transistor |
| Answer» E. | |
| 11. |
Oscillators operating at millimeter wavelength are difficult to realize and are also less efficient. |
| A. | true |
| B. | false |
| Answer» B. false | |