MCQOPTIONS
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MCQOPTIONS
This section includes 18 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 PEP if the transmitter produces a peak to peak voltage of 178V across a 75Ω load? |
| A. | 75.4W |
| B. | 52.8W |
| C. | 54.2W |
| D. | 45.5W |
| Answer» C. 54.2W | |
| 2. |
What is the maximum current if the peak envelope power is 500W and the supply to the amplifier is 50V? |
| A. | 10A |
| B. | 10mA |
| C. | 550A |
| D. | 550mA |
| Answer» B. 10mA | |
| 3. |
What is the peak envelope power if the rms voltage is 127.26V across a 50Ω load? |
| A. | 324W |
| B. | 321W |
| C. | 215W |
| D. | 154W |
| Answer» B. 321W | |
| 4. |
The low power carrier transmitted with SSB signal is called as? |
| A. | SSB carrier |
| B. | Dummy carrier |
| C. | Fake carrier |
| D. | Pilot carrier |
| Answer» E. | |
| 5. |
THE_LOW_POWER_CARRIER_TRANSMITTED_WITH_SSB_SIGNAL_IS_CALLED_AS??$ |
| A. | SSB carrier |
| B. | Dummy carrier |
| C. | Fake carrier |
| D. | Pilot carrier |
| Answer» E. | |
| 6. |
What is the maximum current if the peak envelope power is 500W and the supply to the amplifier is 50V?$ |
| A. | 10A |
| B. | 10mA |
| C. | 550A |
| D. | 550mA |
| Answer» B. 10mA | |
| 7. |
What_is_the_peak_envelope_power_if_the_rms_voltage_is_127.26V_across_a_50Ω_load?$# |
| A. | 324W |
| B. | 321W |
| C. | 215W |
| D. | 154W |
| Answer» B. 321W | |
| 8. |
Which of the following is true with respect to the bandwidth of a 2kHz audio signal and a 2kHz binary data? |
| A. | Bandwidth is higher for audio signals than binary data |
| B. | Bandwidth is higher for binary data than audio signals |
| C. | Bandwidth remains the same for both |
| D. | Bandwidth keeps increasing with time for the binary data |
| Answer» C. Bandwidth remains the same for both | |
| 9. |
What is the average power of the transmitter if PEP = 500W? |
| A. | 0W to 500W |
| B. | 100W to 300W |
| C. | 125W to 166.66W |
| D. | 0W to 250W |
| Answer» D. 0W to 250W | |
| 10. |
What_is_the_PEP_if_the_transmitter_produces_a_peak_to_peak_voltage_of_178V_across_a_75Ω_load?$ |
| A. | 75.4W |
| B. | 52.8W |
| C. | 54.2W |
| D. | 45.5W |
| Answer» C. 54.2W | |
| 11. |
Which one of the following is not true with respect to SSB signal? |
| A. | Hard to demodulate |
| B. | Less power |
| C. | Carrier is suppressed |
| D. | Very low range |
| Answer» B. Less power | |
| 12. |
Why is no carrier signal transmitted when the amplitude of the modulating signal is 0 in an SSB transmission? |
| A. | Attenuation |
| B. | Undermodulation |
| C. | No sideband is generated |
| D. | All the sideband is suppressed |
| Answer» D. All the sideband is suppressed | |
| 13. |
Where does selective fading occur? |
| A. | Attenuator |
| B. | Amplifier |
| C. | Atmosphere |
| D. | Antenna |
| Answer» D. Antenna | |
| 14. |
SSB transmitters are lighter and require less power than their normal AM transmitters. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 15. |
Which of the following is an advantage of SSB over DSB? |
| A. | No change in spectrum space |
| B. | Reduce in spectrum space |
| C. | Carrier is suppressed |
| D. | Power is not wasted on the carrier |
| Answer» C. Carrier is suppressed | |
| 16. |
What is used to generate a DSB signal? |
| A. | Balanced modulator |
| B. | Carrier suppressor |
| C. | Antimodulator |
| D. | Sideband suppressor |
| Answer» B. Carrier suppressor | |
| 17. |
The spectrum space occupied by a DSB signal is the same as that of a conventional AM signal. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 18. |
The type of signal transmission in which no power is wasted on the carrier is known as ________ |
| A. | Amplitude modulation |
| B. | Frequency modulation |
| C. | Sideband suppressed carrier signal |
| D. | Unsuppressed carrier |
| Answer» D. Unsuppressed carrier | |