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. |
In systems, pre-emphasis is used to amplify ________ |
| A. | high frequency |
| B. | low frequency |
| C. | phase |
| D. | amplitude |
| Answer» B. low frequency | |
| 2. |
In FM the carrier deviation is determined by ________ |
| A. | Frequency |
| B. | Modulation |
| C. | Amplitude |
| D. | Phase |
| Answer» C. Amplitude | |
| 3. |
If selectivity is poor then the receiver has poor _________ |
| A. | sensitivity |
| B. | diverse reception |
| C. | blocking |
| D. | fidelity |
| Answer» D. fidelity | |
| 4. |
IN_SYSTEMS,_PRE-EMPHASIS_IS_USED_TO_AMPLIFY_________?$ |
| A. | high frequency |
| B. | low frequency |
| C. | phase |
| D. | amplitude |
| Answer» B. low frequency | |
| 5. |
In FM the carrier deviation is determined by _______? |
| A. | Frequency |
| B. | Modulation |
| C. | Amplitude |
| D. | Phase |
| Answer» C. Amplitude | |
| 6. |
If selectivity is poor then the receiver has poor ________? |
| A. | sensitivity |
| B. | diverse reception |
| C. | blocking |
| D. | fidelity |
| Answer» D. fidelity | |
| 7. |
If the output power of radio receiver is doubled then the volume is increased by _________ |
| A. | 3 dB |
| B. | 2 dB |
| C. | -3 dB |
| D. | -2 dB |
| Answer» B. 2 dB | |
| 8. |
Any signal and its Hilbert transform are mutually orthogonal. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
Padder capacitor can be used to achieve three point tracking. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Most of the amplification of the received signal is obtained in a superheterodyne receiver from ________ stage. |
| A. | IF |
| B. | RF |
| C. | Power Amplifier |
| D. | Local Oscillator |
| Answer» B. RF | |
| 11. |
Which of the following receiver does not have an amplitude limiter stage? |
| A. | AM |
| B. | PM |
| C. | FM |
| D. | Both AM and FM |
| Answer» B. PM | |
| 12. |
What do you understand by the term discone antenna? |
| A. | combination of disc and cone |
| B. | combination of disc and cone with a spacing of <sup> é</sup>‚ÅÑ<sub>4</sub> |
| C. | combination of disc and cone with a spacing of <sup> é</sup>‚ÅÑ<sub>2</sub> |
| D. | same as the helical antenna |
| Answer» B. combination of disc and cone with a spacing of <sup>¬¨‚Ć‚àö¬©</sup>‚Äö√Ñ√∂‚àö√ñ‚àö√´<sub>4</sub> | |
| 13. |
In AM receiver, the oscillator frequency is always ________ |
| A. | lower than signal frequency |
| B. | higher than signal frequency |
| C. | equal to signal frequency |
| D. | equal to 1KHz |
| Answer» C. equal to signal frequency | |