F.M., A.M. and S.S.B. transmitters

Explanation of question 2

The ratio for a modulated wave is known as the

  1. modulation index
  2. modulation depth
  3. deviation ratio
  4. bandwidth

The answer is :- 1 The ratio is known as the modulation index. The amplitude of the modulating signal is not in the expression, and the modulation index is therefore not a constant.

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