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A message signal of frequency $10 \mathrm{kHz}$ and peak voltage of $15 \mathrm{~V}$ is used to modulate a carrier frequency of $1 \mathrm{MHz}$ and peak voltage of $30 \mathrm{~V}$. Determine the modulation index.
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The correct answer is:
0.5
Modulation index,
$\mu=\frac{\text { Amplitude of message signal }}{\text { Amplitude of carrier wave }}=\frac{15 \mathrm{~V}}{30 \mathrm{~V}}=0.5$
$\mu=\frac{\text { Amplitude of message signal }}{\text { Amplitude of carrier wave }}=\frac{15 \mathrm{~V}}{30 \mathrm{~V}}=0.5$
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