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. |
Which of the following statement is not true about auto-correlation function? |
| A. | it is non-unique description of goals |
| B. | it is measure of both time variation and statistical dependence |
| C. | it is an average function |
| D. | it is defined only for periodic signals |
| Answer» E. | |
| 2. |
Auto-correlation function is non-unique description of signals. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
An ergodic process is present in communication if many random signals have ________ |
| A. | identical time averages |
| B. | identical ensemble averages |
| C. | identical time and ensemble averages |
| D. | identical bandwidth |
| Answer» D. identical bandwidth | |
| 4. |
RELATIONSHIP_BETWEEN_AMPLITUDE_AND_FREQUENCY_IS_REPRESENTED_BY_________?$ |
| A. | Time-domain plot |
| B. | Phase-domain plot |
| C. | Frequency-domain plot |
| D. | Amplitude-domain plot |
| Answer» D. Amplitude-domain plot | |
| 5. |
Which_of_the_following_statement_is_not_true_about_auto-correlation_function?$ |
| A. | it is non-unique description of goals |
| B. | it is measure of both time variation and statistical dependence |
| C. | it is an average function |
| D. | it is defined only for periodic signals |
| Answer» E. | |
| 6. |
Auto-correlation function is non-unique description of signals? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
An ergodic process is present in communication, if many random signals have ________ |
| A. | identical time averages |
| B. | identical ensemble averages |
| C. | identical time and ensemble averages |
| D. | identical bandwidth |
| Answer» D. identical bandwidth | |
| 8. |
Why amplitude modulation is issued for broadcasting? |
| A. | It is more immune to noise |
| B. | It has more fidelity |
| C. | It avoids receiver complexity |
| D. | It has better selectivity and sensitivity |
| Answer» D. It has better selectivity and sensitivity | |
| 9. |
Which of the following statement is incorrect about modulation? |
| A. | It is used to allow the use of practical antennas |
| B. | It is used to separate different transmissions |
| C. | It is used to reduce the required bandwidth |
| D. | It is used to ensure that the message is transmitted over long distances |
| Answer» D. It is used to ensure that the message is transmitted over long distances | |
| 10. |
Modulation is used to allow the use of practical antennas. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
For what modulation index, we can expect maximum undistorted power output of a transmitter? |
| A. | 50% |
| B. | 100% |
| C. | 25% |
| D. | 0 |
| Answer» C. 25% | |
| 12. |
Notch filter is a band pass filter. |
| A. | True |
| B. | False |
| Answer» C. | |