AP EAMCET · PHYSICS · Communication System
A carrier wave is used to transmit a message signal. If the peak voltage of modulating signal and carrier signal are increased by and respectively, the modulation index is changed by
- A
- B
- C
- D
Answer & Solution
Correct Answer
(A)
Step-by-step Solution
Detailed explanation
Modulation index, m=Peak value of modulating signalEmPeak value of carrier signalEc When modulating signal is increased by 1%, then, Em'=1+0.01Em=1.01Em And when carrier signal in increased by 3%, then, Ec'=1+0.03Ec=1.03Ec Now, the new…
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