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. |
Ground wave can be used for communication upto ________ |
| A. | 5 KHz |
| B. | 12 KHz |
| C. | 16 KHz |
| D. | 25 KHz |
| Answer» D. 25 KHz | |
| 2. |
In a Vidicon camera tube, both sides of the target plate have the coating of Sno2. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Distance at which a sky wave is received back on earth ________ with an angle of incidence. |
| A. | increases |
| B. | decreases |
| C. | can be increase or decrease |
| D. | can neither be increase or decrease |
| Answer» C. can be increase or decrease | |
| 4. |
Costa’s receiver is used for ________ |
| A. | coherent detection of AM-SC signal |
| B. | asynchronous detection of AM-SC signal |
| C. | amplification of signal |
| D. | frequency mixing of signal |
| Answer» B. asynchronous detection of AM-SC signal | |
| 5. |
IN_A_VIDICON_CAMERA_TUBE,_BOTH_SIDES_OF_THE_TARGET_PLATE_HAVE_THE_COATING_OF_SNO2.?$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
Ground wave can be used for communication upto ________$ |
| A. | 5 KHz |
| B. | 12 KHz |
| C. | 16 KHz |
| D. | 25 KHz |
| Answer» D. 25 KHz | |
| 7. |
Distance at which a sky wave is received back on earth ________ with angle of incidence? |
| A. | increases |
| B. | decreases |
| C. | can be increase or decrease |
| D. | can neither be increase or decrease |
| Answer» C. can be increase or decrease | |
| 8. |
Thermal noise is a synonym of ________ |
| A. | Atmospheric noise |
| B. | shot noise |
| C. | Johnson noise |
| D. | transit time noise |
| Answer» D. transit time noise | |
| 9. |
Atmospheric noise, extraterrestrial noise and man-made noise is part of internal noise in communication. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
Image frequency is given by ________ |
| A. | f<sub>s</sub> + f<sub>i</sub> |
| B. | f<sub>s</sub> ± f<sub>i</sub> |
| C. | f<sub>s</sub> + 2f<sub>i</sub> |
| D. | f<sub>s</sub> ± 2f<sub>i</sub> |
| Answer» D. f<sub>s</sub> ¬¨¬®¬¨¬± 2f<sub>i</sub> | |
| 11. |
In frequency modulation, there is a large increase in noise and hence increase in the signal to noise ratio. |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
Sampling frequency of a compact disk is about ________ |
| A. | 30 KHz |
| B. | 50 KHz |
| C. | 10 KHz |
| D. | 70 KHz |
| Answer» D. 70 KHz | |
| 13. |
Helical antenna is mainly used for ________ |
| A. | bandwidth calculation |
| B. | production of video signals |
| C. | radio transmission |
| D. | satellite tracking |
| Answer» E. | |
| 14. |
Costa’s receiver is used for ________ |
| A. | coherent detection of AM-SC signal |
| B. | asynchronous detection of AM-SC signal |
| C. | amplification of signal |
| D. | frequency mixing of signal |
| Answer» B. asynchronous detection of AM-SC signal | |