MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Aircraft Maintenance knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The lowest 10 MHz of the band is split into narrow-band channels of 50 kHz. |
| A. | False |
| B. | True |
| Answer» C. | |
| 2. |
Which of the following is the emergency channel for military aircraft? |
| A. | 243.0 Hz |
| B. | 243.0 MHz |
| C. | 343.0 MHz |
| D. | 343.0 Hz |
| Answer» C. 343.0 MHz | |
| 3. |
The European Union allows a maximum of ___________ air band channels. |
| A. | 2,280 |
| B. | 280 |
| C. | 774 |
| D. | 228 |
| Answer» B. 280 | |
| 4. |
What is the maximum audio frequency at which an air band channel can operate? |
| A. | 4.166 MHz |
| B. | 4.166 mHz |
| C. | 4.166 kHz |
| D. | 4.166 Hz |
| Answer» D. 4.166 Hz | |
| 5. |
What is the full form of SSB modulation? |
| A. | Shaky-sideband modulation |
| B. | Separated-sideband modulation |
| C. | Sorted-sideband modulation |
| D. | Singe-sideband modulation |
| Answer» E. | |
| 6. |
Military aircraft also use a dedicated UHF-AM band from 225.0 399.95. |
| A. | False |
| B. | True |
| Answer» C. | |
| 7. |
Radio operations used for aircraft communication make use of ___________ |
| A. | Amplitude modulation |
| B. | Frequency modulation |
| C. | Phase modulation |
| D. | Channel Modulation |
| Answer» B. Frequency modulation | |
| 8. |
When were the frequencies between 136.000 and 136.975 MHz added? |
| A. | 1 January 2019 |
| B. | 1 January 2010 |
| C. | 1 January 1990 |
| D. | 1 January 1999 |
| Answer» D. 1 January 1999 | |
| 9. |
What is the frequency range of VHF (Very high frequency)? |
| A. | 30 MHz to 300 MHz |
| B. | 30 Hz to 300 Hz |
| C. | 30 KHz to 300 KHz |
| D. | 30 mHz to 300 mHz |
| Answer» B. 30 Hz to 300 Hz | |
| 10. |
Frequencies lying immediately below VHF are referred to as _________ |
| A. | High frequency |
| B. | Ultra high frequency |
| C. | Low frequency |
| D. | Ultra low frequency |
| Answer» B. Ultra high frequency | |
| 11. |
Which of the following is not a common use for radio waves in the VHF band? |
| A. | FM radio broadcasting |
| B. | Walkie-talkie communication |
| C. | Marine communications |
| D. | Television broadcasting |
| Answer» C. Marine communications | |
| 12. |
Which of the following is not true about VHF propagation? |
| A. | Can penetrate building walls |
| B. | Can travel long distances |
| C. | Transmitting antennas are huge |
| D. | Can be received indoors |
| Answer» D. Can be received indoors | |
| 13. |
The VHF air band uses the frequencies between 108 and ___________ MHz. |
| A. | 127 |
| B. | 137 |
| C. | 110 |
| D. | 237 |
| Answer» C. 110 | |
| 14. |
What is the transmission range of an aircraft flying at a cruise altitude of 35,000 feet? |
| A. | 2000 mi |
| B. | 400 mi |
| C. | 200 mi |
| D. | 4000 mi |
| Answer» D. 4000 mi | |
| 15. |
Which is the only channel that retains 100 kHz channel spacing in the US? |
| A. | 121.5 MHz |
| B. | 131.5 MHz |
| C. | 141.5 MHz |
| D. | 171.5 MHz |
| Answer» B. 131.5 MHz | |