Advantages of FM over AM

Q.  FM is advantageous over AM as
- Published on 14 Oct 15

a. The amplitude of FM is constant. So transmitter power remains unchanged in FM but it changes in AM
b. The depth of modulation in FM can be changed to any value by changing the frequency deviation. So the signal is not distorted
c. There is less possibility of adjacent channel interference due to presence of guard bands
d. All of the above

ANSWER: All of the above
 
The amplitude of FM is constant. So transmitter power remains unchanged in FM but it changes in AM. The depth of modulation in FM can be changed to any value by changing the frequency deviation. So the signal is not distorted. There is less possibility of adjacent channel interference due to presence of guard bands so interference of noise is minimum in FM.

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