MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Analog Communications knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
De-emphasis circuit is used in circuit before detection. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Pre-emphasis circuit is used ________ |
| A. | before detection |
| B. | after detection |
| C. | before encoding |
| D. | after encoding |
| Answer» D. after encoding | |
| 3. |
Frequency fogging is used to reduce noise in a carrier system. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
PRE-EMPHASIS_CIRCUIT_IS_USED_________?$ |
| A. | before detection |
| B. | after detection |
| C. | before encoding |
| D. | after encoding |
| Answer» D. after encoding | |
| 5. |
De-emphasis_circuit_is_used_in_circuit_before_detection.$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
Frequency fogging is used to reduce noise in a carrier system? |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
In a frequency modulated signal, the power _________ as the modulation index increases. |
| A. | remains constant |
| B. | increase |
| C. | decrease |
| D. | becomes 0 |
| Answer» B. increase | |
| 8. |
The frequency deviation is proportional to both amplitude and frequency in the phase modulated signal. |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
The difference between phase and frequency modulation ________ |
| A. | lies in the poorer radio response of phase modulation index |
| B. | lies in the different definition of modulation index |
| C. | is too great to make the two systems compatible |
| D. | is purely theoretical |
| Answer» C. is too great to make the two systems compatible | |
| 10. |
Colpitts oscillator is used in frequency modulation. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
Aspect ratio is the ratio of ________ |
| A. | width to height |
| B. | height to width |
| C. | power to width |
| D. | width to power |
| Answer» B. height to width | |
| 12. |
Which of the following statement is true about frequency modulation? |
| A. | noise gets decrease if we decrease deviation |
| B. | noise gets decrease if we increase deviation |
| C. | noise gets decrease by maintaining deviation constant |
| D. | noise relates parabolically to deviation |
| Answer» C. noise gets decrease by maintaining deviation constant | |