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Spectral density express ________

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Spectral density express ________

(a) Average voltage

(b) Average power in a waveform as a function of frequency

(c) Average noise voltage

(d) Average channel capacity

I have been asked this question in an internship interview.

Question is taken from RF Mixing topic in chapter Receivers & Transducers of Analog Communications

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Best answer
Right option is (b) Average power in a waveform as a function of frequency

The best explanation: Power Spectral Density (PSD) of any signal describes the power present in signal as a function of frequency.

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