Question:
Carrier wave and modulating wave voltages increase by 1% and 3%. Find change in modulation index.
Carrier wave and modulating wave voltages increase by 1% and 3%. Find change in modulation index.
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Modulation index is ratio of modulating to carrier amplitude.
Updated On: May 19, 2025
- \(-2%\)
- \(4%\)
- \(2%\)
- \(-4%\)
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The Correct Option is A
Solution and Explanation
Modulation index:
\[
\mu = \frac{V_m}{V_c} \Rightarrow \frac{1.01}{1.03} \approx 0.9806
\Rightarrow \text{Change} = (0.9806 - 1) \times 100 \approx -2%
\]
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