MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Communications knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Free space in idealization which consists |
| A. | Transmitter |
| B. | Receiver |
| C. | Transmitter & Receiver |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 2. |
Which has the maximum power efficiency? |
| A. | Class A |
| B. | Class B |
| C. | Class C |
| D. | Class AB |
| Answer» D. Class AB | |
| 3. |
Class B linear amplifiers have maximum power efficiency of |
| A. | 50% |
| B. | 75% |
| C. | 78.5% |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 4. |
WHICH_HAS_THE_MAXIMUM_POWER_EFFICIENCY??$ |
| A. | Class A |
| B. | Class B |
| C. | Class C |
| D. | Class AB |
| Answer» D. Class AB | |
| 5. |
Free_space_in_idealization_which_consists$ |
| A. | Transmitter |
| B. | Receiver |
| C. | Transmitter & Receiver |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 6. |
Class B linear amplifiers have maximum power efficiency o? |
| A. | 50% |
| B. | 75% |
| C. | 78.5% |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 7. |
Which generates high distortion? |
| A. | Class A |
| B. | Class B |
| C. | Class C |
| D. | Class AB |
| Answer» D. Class AB | |
| 8. |
Which has 50% maximum power efficiency? |
| A. | Class A |
| B. | Class B |
| C. | Class AB |
| D. | None of the mentioned |
| Answer» B. Class B | |
| 9. |
An amplifier uses ______ to take input signal. |
| A. | DC power |
| B. | AC power |
| C. | DC & AC power |
| D. | None of the mentioned |
| Answer» B. AC power | |
| 10. |
Which modulation technique have the same bit and symbol error probability? |
| A. | BPSK |
| B. | DPSK |
| C. | OOK |
| D. | All of the mentioned |
| Answer» E. | |
| 11. |
For non coherent reception of PSK _____ is used. |
| A. | Differential encoding |
| B. | Decoding |
| C. | Differential encoding & Decoding |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 12. |
In M-ary FSK as M tends to infinity, probability of error tends to |
| A. | Infinity |
| B. | Unity |
| C. | Zero |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 13. |
In M-ary FSK, as M increases error |
| A. | Increases |
| B. | Decreases |
| C. | Does not get effected |
| D. | Cannot be determined |
| Answer» C. Does not get effected | |