MCQOPTIONS
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MCQOPTIONS
This section includes 14 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 modulation technique uses minimum bandwidth? |
| A. | DSB-SC |
| B. | SSB-SC |
| C. | FM |
| D. | VSB |
| Answer» C. FM | |
| 2. |
Wireless communication takes place through ________ |
| A. | EM waves |
| B. | X-Rays |
| C. | Optical Fibres |
| D. | Infrared Waves |
| Answer» B. X-Rays | |
| 3. |
AM waves is represented by Et cos ωc t. What does Et denotes? |
| A. | envelope |
| B. | carrier signal |
| C. | modulating signal |
| D. | amplitude |
| Answer» B. carrier signal | |
| 4. |
What do you understand by the term Cross talk? |
| A. | generation of closely lying sidebands |
| B. | a method of increasing bandwidth |
| C. | a method of decreasing bandwidth by converting DSB-SC signal to SSB-SC |
| D. | disturbance caused in nearby circuit due to transmitted signal |
| Answer» E. | |
| 5. |
Find the number of pulses, if the number of quantization levels is 32 in PCM? |
| A. | 3 |
| B. | 6 |
| C. | 4 |
| D. | 5 |
| Answer» E. | |
| 6. |
If power transmitted is 90kW, what is the field at a distance of 45km? |
| A. | 2 |
| B. | 1 |
| C. | 0.036 |
| D. | 0.01 |
| Answer» D. 0.01 | |
| 7. |
WIRELESS_COMMUNICATION_TAKES_PLACE_THROUGH_________?$ |
| A. | EM waves |
| B. | X-Rays |
| C. | Optical Fibres |
| D. | Infrared Waves |
| Answer» B. X-Rays | |
| 8. |
Which_modulation_technique_uses_minimum_bandwidth?$ |
| A. | DSB-SC |
| B. | SSB-SC |
| C. | FM |
| D. | VSB |
| Answer» C. FM | |
| 9. |
AM waves is represented by Et cos ⁡ωc t. What does Et denotes?# |
| A. | envelope |
| B. | carrier signal |
| C. | modulating signal |
| D. | amplitude |
| Answer» B. carrier signal | |
| 10. |
Peak voltage of a carrier is 8kV, each sideband has an amplitude of 800V. Find its modulation index? |
| A. | 0.28 |
| B. | 0.09 |
| C. | 0.02 |
| D. | 0.08 |
| Answer» D. 0.08 | |
| 11. |
A device uses a 8 bit word then the maximum number of words it can transmit is ________ |
| A. | 64 |
| B. | 256 |
| C. | 1024 |
| D. | 512 |
| Answer» C. 1024 | |
| 12. |
Which transistor amplifier is most commonly used? |
| A. | Common Base |
| B. | Common Emitter |
| C. | Common Collector |
| D. | None of these |
| Answer» C. Common Collector | |
| 13. |
Find the number of pulses, if the number of quantization level is 32 in PCM? |
| A. | 3 |
| B. | 6 |
| C. | 4 |
| D. | 5 |
| Answer» E. | |
| 14. |
Quantization error occurs in ________ |
| A. | Time Division Multiplexing |
| B. | Frequency Division Multiplexing |
| C. | Pulse Code Modulation |
| D. | Pulse Width Modulation |
| Answer» D. Pulse Width Modulation | |