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A 1mW video signal having a bandwidth of 100MHz is transmitted to a receiver through a cable that has 40dB loss. If the effective one-sided noise spectral density at the receiver is 10-20 Watt/Hz, then signal-to-noise ratio at the receiver is ?

Correct Answer: 50 dB

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Communication Engineering MCQ: A 1mW video signal having a bandwidth of 100MHz is transmitted to a receiver through a cable that has 40dB loss. If the effective one-sided noise spectral density at the receiver is 10-20 Watt/Hz, then signal-to-noise ratio at the receiver is ? | Extra Education