MCQOPTIONS
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MCQOPTIONS
This section includes 13 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. |
Vestigial side band (VSB) is most commonly used in ________ |
| A. | Television Transmission |
| B. | Radios |
| C. | Telephony |
| D. | Laser Transmission |
| Answer» B. Radios | |
| 2. |
What is the radio frequency range of a frequency modulated signal? |
| A. | 20-80 MHz |
| B. | 100-200 MHz |
| C. | 200-350 MHz |
| D. | 99-108 MHz |
| Answer» E. | |
| 3. |
What will happen in amplitude modulation, if the modulation index is more than 1? |
| A. | bandwidth will increase |
| B. | bandwidth will decrease |
| C. | amplitude becomes constant |
| D. | waves will get distorted |
| Answer» E. | |
| 4. |
WHAT_IS_THE_RADIO_FREQUENCY_RANGE_OF_A_FREQUENCY_MODULATED_SIGNAL??$ |
| A. | 20-80 MHz |
| B. | 100-200 MHz |
| C. | 200-350 MHz |
| D. | 99-108 MHz |
| Answer» E. | |
| 5. |
Vestigial_side_band_(VSB)_is_most_commonly_used_in_________$ |
| A. | Television Transmission |
| B. | Radios |
| C. | Telephony |
| D. | Laser Transmission |
| Answer» B. Radios | |
| 6. |
Which of the following is the advantage of base modulation over collector modulation of a class C amplifier? |
| A. | lower modulation power is required |
| B. | higher power output per transistor |
| C. | better efficiency |
| D. | better linearity of modulation |
| Answer» B. higher power output per transistor | |
| 7. |
Which among the following is not an advantage of FM over AM? |
| A. | modulating power required is less |
| B. | low bandwidth is required |
| C. | better noise immunity |
| D. | better signal to noise ratio |
| Answer» C. better noise immunity | |
| 8. |
The adverse effect of noise in communication system can be seen in ________ |
| A. | receiver |
| B. | transmitter |
| C. | source |
| D. | channel |
| Answer» E. | |
| 9. |
What will happen in amplitude modulation, if modulation index is more than 1? |
| A. | bandwidth will increase |
| B. | bandwidth will decrease |
| C. | amplitude becomes constant |
| D. | waves will get distorted |
| Answer» E. | |
| 10. |
Varacter is used for generation of ________ |
| A. | PM signals only |
| B. | FM signals only |
| C. | AM signals only |
| D. | DSB-SC signals |
| Answer» C. AM signals only | |
| 11. |
What is the need of doing Pre emphasis? |
| A. | DSB-SC |
| B. | VSB |
| C. | SSB-SC |
| D. | For removing frequency variations |
| Answer» B. VSB | |
| 12. |
Which two noises are present in Delta Modulation (DM)? |
| A. | Slope overload and Thermal noise |
| B. | Granular and shot noise |
| C. | Slope overload and granular noise |
| D. | Thermal and shot noise |
| Answer» D. Thermal and shot noise | |
| 13. |
Why sampling is used in communication? |
| A. | for getting higher speed of communication |
| B. | for getting higher efficiency |
| C. | cheaper equipment is required |
| D. | for a better transmission |
| Answer» B. for getting higher efficiency | |