AP EAMCET · PHYSICS · Communication System
A carrier is simultaneously modulated by two sine waves with modulation indices of 0.3 and 0.4 ; then the total modulation index is
- A \(1\)
- B \(0.12\)
- C \(0.5\)
- D \(0.7\)
Answer & Solution
Correct Answer
(C) \(0.5\)
Step-by-step Solution
Detailed explanation
\(\mu_1=0.3, \mu_2=0.4\) \(\therefore\) Total modulation index, \(\mu=\sqrt{\mu_1^2+\mu_2^2}=\sqrt{(0.3)^2+(0.4)^2}=0.5\)
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