Characteristics of Narrow band FM and Wide band FM

Q.  Narrow band FM has the characteristics:
- Published on 15 Oct 15

a. The frequency sensitivity kf is small
b. Bandwidth is narrow
c. Both a and b
d. None of the above

ANSWER: Both a and b
 
The bandwidth of the FM signal depends upon the frequency sensitivity kf. When kf is small, the bandwidth of the FM signal becomes narrow and this is known as Narrow Band FM signal. The bandwidth of a narrow band FM signal is almost same as that of an AM signal.

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