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CBSE Class 12-science Answered

Mention three advantages and three disadvantages of Frequency Modulation.
Asked by Topperlearning User | 09 Jul, 2014, 08:35: AM
answered-by-expert Expert Answer

Advantages:

1. In Fm receivers the noise can be reduced by increasing the frequency deviation and hence Fm reception is immune to noise as compared to   AM reception,

2.Fm transmitters are highly efficient than AM transmitters as in Am transmission most of the power goes waste in the transmitted carrier.

3. FM transmission can be used for the stereo sound transmission due to a large number of side bands.

Disadvantages:

1. The bandwidth in FM transmission is 10 times as large as that needed in AM transmission.Hence wider frequency channel is required in FM transmission.

2. The area of reception for FM transmission is much smaller than that for AM transmission as the FM reception is limited to L-O-S.

3.The transmitting and receiving equipments are very complex in FM.

Answered by | 09 Jul, 2014, 10:35: AM

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