TS EAMCET · Physics · Communication System
A carrier wave of peak voltage \(12 \mathrm{~V}\) is used to transmit a signal. If the modulation index is \(75 \%\), the peak voltage of the modulating signal is
- A \(18 \mathrm{~V}\)
- B \(22 \mathrm{~V}\)
- C \(9 \mathrm{~V}\)
- D \(28 \mathrm{~V}\)
Answer & Solution
Correct Answer
(C) \(9 \mathrm{~V}\)
Step-by-step Solution
Detailed explanation
Modulation index \((\mu)=\frac{E_m}{E_C}\) \(\begin{aligned} \Rightarrow & & \frac{3}{4} & =\frac{E_m}{12} \\ & & & \\ & E_m & =9 & \text { [no option] } \end{aligned}\)
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