MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Avionics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the minimum frequency of a 16-MHz crystal with a stability of 200 ppm? |
| A. | 1,60,03,200Hz |
| B. | 2,14,65,400Hz |
| C. | 1,59,96,800Hz |
| D. | 4,56,42,863Hz |
| Answer» D. 4,56,42,863Hz | |
| 2. |
Calculate the frequency for maximum drift of crystal if The crystal has a stability of 6300 ppm and an output frequency of 268.2MHz and frequency multiplier chain with factors of 2, 3, and 3. |
| A. | 123.5MHz |
| B. | 423.2MHz |
| C. | 269.65MHz |
| D. | 235.1MHz |
| Answer» D. 235.1MHz | |
| 3. |
Calculate the transmitter output frequency if the transmitter uses a crystal oscillator with a frequency of 14.9 MHz and a frequency multiplier chain with factors of 2, 3, and 3. |
| A. | 1.564MHz |
| B. | 268.2MHz |
| C. | 264.3MHz |
| D. | 265.6MHz |
| Answer» C. 264.3MHz | |
| 4. |
CALCULATE_THE_TRANSMITTER_OUTPUT_FREQUENCY_IF_THE_TRANSMITTER_USES_A_CRYSTAL_OSCILLATOR_WITH_A_FREQUENCY_OF_14.9_MHZ_AND_A_FREQUENCY_MULTIPLIER_CHAIN_WITH_FACTORS_OF_2,_3,_AND_3.?$ |
| A. | 1.564MHz |
| B. | 268.2MHz |
| C. | 264.3MHz |
| D. | 265.6MHz |
| Answer» C. 264.3MHz | |
| 5. |
What is the minimum frequency of a 16-MHz crystal with a stability of 200 ppm?$ |
| A. | 1,60,03,200Hz |
| B. | 2,14,65,400Hz |
| C. | 1,59,96,800Hz |
| D. | 4,56,42,863Hz |
| Answer» D. 4,56,42,863Hz | |
| 6. |
Calculate the frequency for maximum drift of crystal if The crystal has a stability of 6300 ppm and an output frequency of 268.2MHz and frequency multiplier chain with factors of 2, 3, and 3.$ |
| A. | 123.5MHz |
| B. | 423.2MHz |
| C. | 269.65MHz |
| D. | 235.1MHz |
| Answer» D. 235.1MHz | |
| 7. |
What is the maximum frequency of a 16-MHz crystal with a stability of 200 ppm? |
| A. | 1,60,03,200Hz |
| B. | 2,14,65,400Hz |
| C. | 1,36,12,500Hz |
| D. | 4,56,42,863Hz |
| Answer» B. 2,14,65,400Hz | |
| 8. |
The device that maintains controlled temperature for crystal oscillators are called __________ |
| A. | Crystal stove |
| B. | Crystal ovens |
| C. | Crystal chamber |
| D. | Temperature chamber |
| Answer» C. Crystal chamber | |
| 9. |
What is the only oscillator capable of meeting the precision and stability demanded by the FCC? |
| A. | Armstrong Oscillator |
| B. | Crystal Oscillator |
| C. | Hartley oscillator |
| D. | RC Phase Shift Oscillator |
| Answer» C. Hartley oscillator | |
| 10. |
______ is used to provide continuous tuning over the desired range? |
| A. | Variable frequency oscillator |
| B. | Frequency synthesizer |
| C. | Variable Frequency producer |
| D. | Frequency multiplier |
| Answer» B. Frequency synthesizer | |
| 11. |
Frequency multiplier multiplies the frequency deviation produced by the modulator. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
What generates the final carrier frequency? |
| A. | Oscillator |
| B. | Modulator |
| C. | Antenna |
| D. | Power source |
| Answer» B. Modulator | |
| 13. |
What device is used to prevent power from the transmitter from going to the receiver side? |
| A. | Multiplexer |
| B. | Duplexer |
| C. | Monoplexer |
| D. | Filter |
| Answer» C. Monoplexer | |
| 14. |
The transmission of data by dots and dashes is an example of ___________ |
| A. | Amplitude modulation |
| B. | Frequency modulation |
| C. | Continuous wave transmission |
| D. | Discrete signal transmission |
| Answer» D. Discrete signal transmission | |