Official PYQ · 2003Set 1 · Q75Analog CommunicationsMCQ1 mark

GATE EC 2003 Set 1 Q75 — Analog Communications

The data for Q. 75-76 are given below. Solve the problems and choose the correct answers.

Let $m(t)=\cos \left[\left(4 \pi \times 10^{3}\right) t\right]$ be the message signal and $\left.c(t)=5 \cos \left[2 \pi \times 10^{b}\right) t\right]$ be the carrier

$c(t)$ and $m(t)$ are used to generate an AM signal. The modulation index of the generated AM signal is $0.5.$ Then the quantity $\frac{\text{ Total sideband power }}{\text{ Carrier power }}$ is

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Answer: D

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Published 10 Oct 2026

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