Principles of Communication: Communication System MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Communication SystemHardQuestion 20250

Question

Signal-to-Noise Ratio (SNR) is defined as:

A
Noise power / Signal power
B
Signal power / Noise power
Correct
C
Signal amplitude + Noise amplitude
D
Frequency of signal / Noise frequency

Correct answer

Signal power / Noise power

Explanation

SNR = P_signal / P_noise (or in dB: 10 log₁₀(P_s/P_n)). Higher SNR means cleaner reception. FM receivers typically achieve better SNR than AM for the same transmitter power.

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