MCQOPTIONS
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MCQOPTIONS
This section includes 15 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 output voltage if the input voltage of a compander with a maximum voltage range of 1 V and a μ of 255 is 0.8V0? |
| A. | 0.08V |
| B. | 0.458V |
| C. | 1.02V |
| D. | 1.54V |
| Answer» D. 1.54V | |
| 2. |
What is the output voltage if the input voltage of a compander with a maximum voltage range of 1 V and a μ of 255 is 0.25? |
| A. | 0V |
| B. | 0.25V |
| C. | 0.5V |
| D. | 0.75V |
| Answer» E. | |
| 3. |
What type of digital modulation is widely used for digital data transmission? |
| A. | Pulse amplitude modulation |
| B. | Pulse width modulation |
| C. | Pulse position modulation |
| D. | Pulse code modulation |
| Answer» E. | |
| 4. |
The process of signal compression and expansion used to reduce distortion and noise is called _____ |
| A. | Amplification |
| B. | Companding |
| C. | Compressing |
| D. | Modulating |
| Answer» C. Compressing | |
| 5. |
THE_PROCESS_OF_SIGNAL_COMPRESSION_AND_EXPANSION_USED_TO_REDUCE_DISTORTION_AND_NOISE_IS_CALLED______?$ |
| A. | Amplification |
| B. | Companding |
| C. | Compressing |
| D. | Modulating |
| Answer» C. Compressing | |
| 6. |
What_type_of_digital_modulation_is_widely_used_for_digital_data_transmission?$ |
| A. | Pulse amplitude modulation |
| B. | Pulse width modulation |
| C. | Pulse position modulation |
| D. | Pulse code modulation |
| Answer» E. | |
| 7. |
What is the output voltage if the input voltage of a compander with a maximum voltage range of 1 V and a μ of 255 is 0.8V0?$ |
| A. | 0.08V |
| B. | 0.458V |
| C. | 1.02V |
| D. | 1.54V |
| Answer» D. 1.54V | |
| 8. |
Pulse modulation is not used in which of the following? |
| A. | Telemetry systems |
| B. | Remote control models |
| C. | Switch power modes |
| D. | Communication of airplane with ATC |
| Answer» E. | |
| 9. |
Which of the following is false with respect to pulse position modulation? |
| A. | Can be transmitted in broadband |
| B. | Modulates a high frequency carrier |
| C. | Pulse is narrow |
| D. | Pulse width changes in accordance with the amplitude of modulating signal |
| Answer» E. | |
| 10. |
Which pulse modulation technique is least expensive? |
| A. | Pulse amplitude modulation |
| B. | Pulse width modulation |
| C. | Pulse position modulation |
| D. | Pulse code modulation |
| Answer» B. Pulse width modulation | |
| 11. |
Power consumption is low in pulse modulation. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
How many voltage levels are present in a PWM signal? |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» D. 3 | |
| 13. |
Which of the following is not a form of pulse modulation? |
| A. | Pulse amplitude modulation |
| B. | Pulse width modulation |
| C. | Pulse position modulation |
| D. | Pulse frequency modulation |
| Answer» E. | |
| 14. |
Which of the following is false with respect to pulse modulation? |
| A. | Less power consumption |
| B. | Low noise |
| C. | Degraded signal can be regenerated |
| D. | Can transmit analog as well as digital waves |
| Answer» E. | |
| 15. |
The process of using a pulse signal to represent information is called _______ |
| A. | Pulse modulation |
| B. | Frequency modulation |
| C. | Amplitude modulation |
| D. | Phase modulation |
| Answer» B. Frequency modulation | |