MCQOPTIONS
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MCQOPTIONS
This section includes 11 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 system is free from noise? |
| A. | FM |
| B. | AM |
| C. | PCM |
| D. | PM |
| Answer» B. AM | |
| 2. |
The noise performance of a square law demodulator of AM signal is ___________ |
| A. | Identical with that of a synchronous detector |
| B. | Better than that of an envelope detector |
| C. | Better than that of a synchronous detector |
| D. | Poorer than that of an envelope detector |
| Answer» D. Poorer than that of an envelope detector | |
| 3. |
WHICH_TWO_NETWORKS_CAN_BE_USED_FOR_IMPEDANCE_MATCHING??$ |
| A. | pi network and T network |
| B. | pi network and bridge network |
| C. | bridge network and T network |
| D. | pi network and mesh network |
| Answer» B. pi network and bridge network | |
| 4. |
Which_system_is_free_from_noise?$ |
| A. | FM |
| B. | AM |
| C. | PCM |
| D. | PM |
| Answer» B. AM | |
| 5. |
The noise performance of a square law demodulator of AM signal is __________? |
| A. | Identical with that of a synchronous detector |
| B. | Better than that of an envelope detector |
| C. | Better than that of a synchronous detector |
| D. | Poorer than that of an envelope detector |
| Answer» D. Poorer than that of an envelope detector | |
| 6. |
The ionosphere consists of __________ layer. |
| A. | negative charge |
| B. | positive charge |
| C. | no charge |
| D. | neutral |
| Answer» B. positive charge | |
| 7. |
The channel capacity is exactly equal to which of the following? |
| A. | Bandwidth |
| B. | Noise rate |
| C. | Amount of information per second |
| D. | Entropy |
| Answer» D. Entropy | |
| 8. |
Sampling theorem finds application in ________ |
| A. | FM |
| B. | PCM |
| C. | AM |
| D. | PM |
| Answer» C. AM | |
| 9. |
Which of the following filter is used only at higher frequencies? |
| A. | Ladder |
| B. | Crystal Gate |
| C. | Half Lattice |
| D. | Full Lattice |
| Answer» B. Crystal Gate | |
| 10. |
Cosmic noise is caused by ________ |
| A. | Distant stars |
| B. | Lightning discharge |
| C. | Solar eruptions |
| D. | Disturbances in the atmosphere |
| Answer» B. Lightning discharge | |
| 11. |
Which statement is true about thermal noise power? |
| A. | it is proportional to B |
| B. | it is proportional to ‚àöB |
| C. | it is proportional to <sup>B</sup>‚ÅÑ<sub>2</sub> |
| D. | it is proportional to <sup>‚àöB</sup>‚ÅÑ<sub>2</sub> |
| Answer» B. it is proportional to ‚Äö√Ñ√∂‚àö‚Ć‚àö‚àÇB | |