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. |
What is the value of modulation index m, for overmodulation? |
| A. | m < 1 |
| B. | m = 1 |
| C. | m > 1 |
| D. | m = 0 |
| Answer» D. m = 0 | |
| 2. |
What is the advantage of using a VSB transmission? |
| A. | Higher bandwidth than SSB |
| B. | Less power required as compared to DSB-SC |
| C. | Lower bandwidth than SSB |
| D. | Both higher bandwidth than SSB and less power required as compared to DSB-SC |
| Answer» E. | |
| 3. |
If a receiver has a poor capacity of blocking adjacent channel interference then the receiver has ________ |
| A. | Poor selectivity |
| B. | Poor Signal to Noise ratio |
| C. | Poor sensitivity |
| D. | Poor fidelity |
| Answer» B. Poor Signal to Noise ratio | |
| 4. |
What is the noise figure of merit for an SSB modulated signal? |
| A. | less than 1 |
| B. | greater than 1 |
| C. | 1 |
| D. | 0.5 |
| Answer» D. 0.5 | |
| 5. |
IF_A_RECEIVER_HAS_A_POOR_CAPACITY_OF_BLOCKING_ADJACENT_CHANNEL_INTERFERENCE_THEN_THE_RECEIVER_HAS_________?$ |
| A. | Poor selectivity |
| B. | Poor Signal to Noise ratio |
| C. | Poor sensitivity |
| D. | Poor fidelity |
| Answer» B. Poor Signal to Noise ratio | |
| 6. |
What is the value of modulation index m, for overmodulation?$ |
| A. | m < 1 |
| B. | m = 1 |
| C. | m > 1 |
| D. | m = 0 |
| Answer» D. m = 0 | |
| 7. |
What_is_the_advantage_of_using_a_VSB_transmission?$ |
| A. | Higher bandwidth than SSB |
| B. | Less power required as compared to DSB-SC |
| C. | Lower bandwidth than SSB |
| D. | Both higher bandwidth than SSB and less power required as compared to DSB-SC |
| Answer» E. | |
| 8. |
Which amplifier is preferably used for low level modulation? |
| A. | Class C |
| B. | Class A |
| C. | Class AB |
| D. | Class B |
| Answer» C. Class AB | |
| 9. |
Which statement is true about multiplexing? |
| A. | it is used to reduce the bandwidth |
| B. | it is used to combine multiple data streams over a single data channel |
| C. | it is used to allow multiple data streams over multiple channels |
| D. | it is used to match and pass the same frequency signal |
| Answer» C. it is used to allow multiple data streams over multiple channels | |
| 10. |
What is the bandwidth occupied by a DSB signal when the modulating frequency lies in the range from 100Hz to 10KHz? |
| A. | 19.8 KHz |
| B. | 19.8 Hz |
| C. | 19.8 MHz |
| D. | 19.8 GHz |
| Answer» B. 19.8 Hz | |
| 11. |
Which device is used in TV receivers for tuning the receiver to the incoming signal? |
| A. | Varacter diode |
| B. | High pass filter |
| C. | Low pass filter |
| D. | Bandpass filter |
| Answer» B. High pass filter | |
| 12. |
Standard intermediate frequency used for AM receiver is ________ |
| A. | 455 MHz |
| B. | 455 KHz |
| C. | 455 Hz |
| D. | 20 KHz |
| Answer» C. 455 Hz | |