MCQOPTIONS
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MCQOPTIONS
This section includes 10 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. |
The amount of frequency deviation in FM signal depends on ________ |
| A. | Modulating frequency |
| B. | Modulation Index |
| C. | Amplitude of the modulating signal |
| D. | Carrier frequency |
| Answer» D. Carrier frequency | |
| 2. |
What is the function of frequency mixer in super heterodyne receiver? |
| A. | Multiplication of incoming signal and the locally generated carrier |
| B. | Addition of incoming signal and the locally generated carrier |
| C. | Amplification |
| D. | Filtering |
| Answer» B. Addition of incoming signal and the locally generated carrier | |
| 3. |
WHAT_IS_THE_FUNCTION_OF_FREQUENCY_MIXER_IN_SUPER_HETERODYNE_RECEIVER??$ |
| A. | Multiplication of incoming signal and the locally generated carrier |
| B. | Addition of incoming signal and the locally generated carrier |
| C. | Amplification |
| D. | Filtering |
| Answer» B. Addition of incoming signal and the locally generated carrier | |
| 4. |
The amount of frequency deviation in FM signal depends on ________$ |
| A. | Modulating frequency |
| B. | Modulation Index |
| C. | Amplitude of the modulating signal |
| D. | Carrier frequency |
| Answer» D. Carrier frequency | |
| 5. |
Vestigial side band signals are detected by ________ |
| A. | PLL detector |
| B. | Ratio detector |
| C. | Square law demodulator |
| D. | Synchronous Detection |
| Answer» E. | |
| 6. |
Which of the following is AM demodulation techniques? |
| A. | Square law demodulator and Envelope detector |
| B. | Ratio detector and PLL detector |
| C. | PLL detector and Coherent detector |
| D. | PLL detector |
| Answer» B. Ratio detector and PLL detector | |
| 7. |
USB (Upper Side Band) is the band of frequencies _________ |
| A. | below carrier frequency in AM spectrum |
| B. | above the carrier frequency in AM spectrum |
| C. | includes the carrier frequency in AM spectrum |
| D. | is the center frequency |
| Answer» D. is the center frequency | |
| 8. |
Radio waves travel through ________ |
| A. | Coaxial Cable |
| B. | Wires |
| C. | Optical fiber cable |
| D. | Electromagnetic waves |
| Answer» E. | |
| 9. |
Analog signal may be converted into digital signal by ________ |
| A. | Filtering |
| B. | Mixing |
| C. | Sampling |
| D. | Transducing |
| Answer» D. Transducing | |
| 10. |
What is the effect on the transmitted power, if the modulation index changes from 0.8 to 1? |
| A. | 0.1364 |
| B. | 0.239 |
| C. | 0.5 |
| D. | 0.3333 |
| Answer» B. 0.239 | |