| 1. | Which of the following statement is correct ? | |
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The frequency of carrier signal is very high compare to that of modulating signal
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The frequency of carrier signal and modulating signal are equal
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The frequency of carrier signal is lower than that of modulating signal
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The frequency of carrier signal depends on frequency of modulating signal
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Report Question| 2. | Which of the following statement is true ? | |
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Bandwidth of FM signal is lower than AM signal
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Bandwidth of FM signal is equal to AM signal
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Bandwidth of FM signal can be less or more than AM signal
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Bandwidth of FM signal is more than AM signal
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| 3. | Theoretical bandwidth requirement for FM system is ? | |
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Same as that of the modulating signal bandwidth
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Twice of modulating signal bandwidth
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infinite
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Thrice as of modulating signal bandwidth
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| 4. | FM broadcast lies in ? | |
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HF Band
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VHF Band
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UHF Band
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SHF Band
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| 5. | The disadvantage of FM over AM is ? | |
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High modulating power is required
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High transmitter power is required
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Large bandwidth is needed
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Noise is high for high frequency signals
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| 6. | Indicate which one of the following is NOT and advantage of FM over AM ? | |
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Better noise immunity is provided
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Lower bandwidth is required
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The transmitted power is more useful
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Less modulating power is required
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| 7. | When a carrier is phase modulated, with an integrated modulating signal, the resultant is ? | |
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Phase modulated signal
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Frequency modulated signal
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Amplitude modulated signal
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QPSK modulated signal
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| 8. | Sampling theorem finds application in ? | |
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Amplitude modulation
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Frequency modulation
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Pulse code modulation
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None of these
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| 9. | An FM signal at 10.7 MHz IF needs to be digitized for demodulation in a digital domain. If the bandwidth of this signal is 200 kHz, the maximum usable sampling frequency is ? | |
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200 kHz
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600 kHz
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400 kHz
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800 kHz
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| 10. | A circuit is said to be free from phase distortion if its phase response shows ? | |
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Quadrature variation with frequency
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Independent of frequency
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Linear variation with frequency
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Proportional to frequency
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