MCQOPTIONS
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MCQOPTIONS
This section includes 15 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. |
Noise gets mixed with signal at ________ |
| A. | receiver |
| B. | transmitter |
| C. | transducer |
| D. | channel |
| Answer» E. | |
| 2. |
How capacitance is related to thickness? |
| A. | it is inversely proportional to thickness |
| B. | it is directly proportional to thickness |
| C. | it is inversely proportional to twice of thickness |
| D. | it is directly proportional to twice of thickness |
| Answer» B. it is directly proportional to thickness | |
| 3. |
TV remote control used ultra violet light. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
If the value of resistor becomes 16 times than its previous value then its noise voltage will become ________ |
| A. | 16 times |
| B. | 8 times |
| C. | 4 times |
| D. | 2 times |
| Answer» D. 2 times | |
| 5. |
If the transmitted power is 100KW then the field at a distance ‘R’ is 60mV/m. Suppose if the transmitted power is reduced to 50KW then the field at same distance ‘R’ will be equal to ________ |
| A. | 50mV/m |
| B. | 42mV/m |
| C. | 45mV/m |
| D. | 55mV/m |
| Answer» C. 45mV/m | |
| 6. |
HOW_CAPACITANCE_IS_RELATED_WITH_THICKNESS??$ |
| A. | it is inversely proportional to thickness |
| B. | it is directly proportional to thickness |
| C. | it is inversely proportional to twice of thickness |
| D. | it is directly proportional to twice of thickness |
| Answer» B. it is directly proportional to thickness | |
| 7. |
Noise gets mixed with signal at ________$ |
| A. | receiver |
| B. | transmitter |
| C. | transducer |
| D. | channel |
| Answer» E. | |
| 8. |
TV remote control used ultra violet light? |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
What is the modulation index for a single tone modulation, given that positive peak of AM wave is 20V and minimum value is 2V? |
| A. | 0.81 |
| B. | 0.91 |
| C. | 0.73 |
| D. | 1 |
| Answer» B. 0.91 | |
| 10. |
If the value of resistor becomes 16 times than its previous value then its noise voltage will become ________ |
| A. | 16 times |
| B. | 8 times |
| C. | 4 times |
| D. | 2 times |
| Answer» D. 2 times | |
| 11. |
If the transmitted power is 100KW then the field at a distance ‘R’ is 60mV/m. Suppose if the transmitted power is reduced to 50KW then the field at same distance ‘R’ will be equal to ________$ |
| A. | 50mV/m |
| B. | 42mV/m |
| C. | 45mV/m |
| D. | 55mV/m |
| Answer» C. 45mV/m | |
| 12. |
Field strength (E) is directly proportional to the square of transmission power. |
| A. | True |
| B. | False |
| Answer» C. | |
| 13. |
Each frequency gives rise to four side bands. |
| A. | True |
| B. | False |
| Answer» C. | |
| 14. |
Squelch circuit is normally inserted in receiver ________ |
| A. | after detector |
| B. | before detector |
| C. | before mixer |
| D. | after power amplifier |
| Answer» B. before detector | |
| 15. |
Discone antenna is mainly used in UHF range. |
| A. | True |
| B. | False |
| Answer» B. False | |