The amount of frequency deviation in FM signal depends on ________(a) Modulating frequency(b) Modulation Index(c) Amplitude of the modulating signal(d) Carrier frequencyThis question was addressed to me during an online interview.This is a very interesting question from Need of Transducers in division Receivers & Transducers of Analog Communications

The amount of frequency deviation in FM signal depends on ________(a)

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 frequencyThis question was addressed to me during an online interview.This is a very interesting question from Need of Transducers in division Receivers & Transducers of Analog Communications
Answer» Right answer is (c) Amplitude of the modulating signal Easy explanation: The amount of FREQUENCY deviation in the FM signal depends on amplitude of the modulating signal. So for any audio signal, as the loudness increases frequency deviation in CARRIER signal ALSO increases. Frequency deviation helps in determining the bandwidth of FM signal.

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