MCQOPTIONS
Saved Bookmarks
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. |
What is the commercial frequency deviation of frequency modulation? |
| A. | 70 KHz |
| B. | 75 KHz |
| C. | 80 KHz |
| D. | 85 KHz |
| Answer» C. 80 KHz | |
| 2. |
For getting zero radiation at right angles, length of antenna should be __________ |
| A. | ʎ |
| B. | ʎ⁄8 |
| C. | ʎ⁄4 |
| D. | ʎ⁄5 |
| Answer» B. ʎ⁄8 | |
| 3. |
If the length of antenna is equal to whole wavelength the radiation is zero in all direction. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
Skip distance depends on the time of day. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
FOR_GETTING_ZERO_RADIATION_AT_RIGHT_ANGLES,_LENGTH_OF_ANTENNA_SHOULD_BE___________?$ |
| A. |  é |
| B. | <sup> é</sup>‚ÅÑ<sub>8</sub> |
| C. | <sup> é</sup>‚ÅÑ<sub>4</sub> |
| D. | <sup> é</sup>‚ÅÑ<sub>5</sub> |
| Answer» B. <sup>¬¨‚Ć‚àö¬©</sup>‚Äö√Ñ√∂‚àö√ñ‚àö√´<sub>8</sub> | |
| 6. |
What_is_the_commercial_frequency_deviation_of_frequency_modulation?$ |
| A. | 70 KHz |
| B. | 75 KHz |
| C. | 80 KHz |
| D. | 85 KHz |
| Answer» C. 80 KHz | |
| 7. |
If the length of antenna is equal to whole wavelength the radiation is zero in all direction? |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
Which of the following is used for attenuating high frequencies? |
| A. | shunt resistance |
| B. | shunt inductance |
| C. | series capacitance |
| D. | shunt capacitance |
| Answer» E. | |
| 9. |
A woofer is connected from the input through a ________ |
| A. | high pass filter |
| B. | low pass filter |
| C. | band pass filter |
| D. | band stop filter |
| Answer» C. band pass filter | |
| 10. |
Full duplex operation allows transmission in only one direction at the same time. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
Leak type bias is used in plate modulated amplifier to ________ |
| A. | increase bandwidth |
| B. | decrease bandwidth |
| C. | prevent tuning |
| D. | prevent excessive grid current |
| Answer» E. | |
| 12. |
Skip distance depends on time of day. |
| A. | True |
| B. | False |
| Answer» C. | |
| 13. |
In case of FM, if the modulating frequency is lowered and the modulating voltage remains constant then the amplitude of distant sidebands first increases and then decreases. |
| A. | True |
| B. | False |
| Answer» C. | |
| 14. |
PDM can be generated by either free running multi-vibrator or monostable multi-vibrator. |
| A. | True |
| B. | False |
| Answer» C. | |