FM - Carrier swing & factors for deviation in signals

Q.  Carrier swing is defined as
- Published on 14 Oct 15

a. The total variation in frequency from the lowest to the highest point
b. Frequency deviation above or below the carrier frequency
c. Width of the side band
d. None of the above

ANSWER: The total variation in frequency from the lowest to the highest point
 
Carrier swing is defined as the total variation in frequency from the lowest to the highest point. The carrier swing = 2 * frequency deviation of the FM signal
= 2 * Δω

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