Question: Q. 4. Define the term modulation. Draw a block diagram of a simple modulator for obtaining $A M$ signal.
R [Foreign 2014]
Solution:
Ans. The process of (appropriate) superimposition of low frequency message signal, over a high frequency carrier wave, is called modulation. 2 [Note : For block diagram see Topic-2]
[CBSE Marking Scheme, 2014]
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