MCQOPTIONS
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MCQOPTIONS
This section includes 15 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. |
____________ is a microwave device in which the frequency of operation is determined by the biasing field strength. |
| A. | VTM |
| B. | Gyratron |
| C. | Helix BWO |
| D. | None of the mentioned |
| Answer» C. Helix BWO | |
| 2. |
Extended interaction oscillator is a ________ beam oscillator that is similar to klystron. |
| A. | Linear beam |
| B. | Crossed beam |
| C. | Parallel beam |
| D. | M beam |
| Answer» B. Crossed beam | |
| 3. |
In a _________ oscillator, the RF wave travels along the helix from the collector towards the electron gun. |
| A. | Interaction oscillator |
| B. | Backward wave oscillator |
| C. | Magnetrons |
| D. | None o the mentioned |
| Answer» C. Magnetrons | |
| 4. |
EXTENDED_INTERACTION_OSCILLATOR_IS_A__________BEAM_OSCILLATOR_THAT_IS_SIMILAR_TO_KLYSTRON.?$ |
| A. | Linear beam |
| B. | Crossed beam |
| C. | Parallel beam |
| D. | M beam |
| Answer» B. Crossed beam | |
| 5. |
Klystron amplifiers have high noise output as compared to crossed field amplifiers.$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
Magnetrons_are_microwave_devices_that_offer_very_high_efficiencies_of_about_80%.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
_____________is_a_microwave_device_in_which_the_frequency_of_operation_is_determined_by_the_biasing_field_strength. |
| A. | VTM |
| B. | Gyratron |
| C. | Helix BWO |
| D. | None of the mentioned |
| Answer» C. Helix BWO | |
| 8. |
In a _________ oscillator, the RF wave travels along the helix from the collector towards the electron gun? |
| A. | Interaction oscillator |
| B. | Backward wave oscillator |
| C. | Magnetrons |
| D. | None o the mentioned |
| Answer» C. Magnetrons | |
| 9. |
A major disadvantage of klystron amplifier is: |
| A. | Low power gain |
| B. | Low bandwidth |
| C. | High source power |
| D. | Design complexity |
| Answer» C. High source power | |
| 10. |
________ is a single cavity klystron tube that operates as on oscillator by using a reflector electrode after the cavity. |
| A. | Backward wave oscillator |
| B. | Reflex klystron |
| C. | Travelling wave tube |
| D. | Magnetrons |
| Answer» C. Travelling wave tube | |
| 11. |
In crossed field tubes, the electron beam traverses the length of the tube and is parallel to the electric field. |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
The klystron tube used in a klystron amplifier is a _________ type beam amplifier. |
| A. | Linear beam |
| B. | Crossed field |
| C. | Parallel field |
| D. | None of the mentioned |
| Answer» B. Crossed field | |
| 13. |
Microwave tubes are grouped into two categories depending on the type of: |
| A. | Electron beam field interaction |
| B. | Amplification method |
| C. | Power gain achieved |
| D. | Construction methods |
| Answer» B. Amplification method | |
| 14. |
Microwave tubes are power sources themselves at higher frequencies and can be used independently without any other devices. |
| A. | True |
| B. | False |
| Answer» C. | |
| 15. |
The production of power at higher frequencies is much simpler than production of power at low frequencies. |
| A. | True |
| B. | False |
| Answer» C. | |