What is the spectrum that is obtained when we plot |ck |^2 as a function of frequencies kF0, k=0,±1,±2..?(a) Average power spectrum(b) Energy spectrum(c) Power density spectrum(d) None of the mentionedI had been asked this question in quiz.I want to ask this question from Frequency Analysis of Continuous Time Signal topic in section Frequency Analysis of Signals and Systems of Digital Signal Processing

What is the spectrum that is obtained when we plot |ck |^2 as a functi

1.	What is the spectrum that is obtained when we plot \|ck \|^2 as a function of frequencies kF0, k=0,±1,±2..?(a) Average power spectrum(b) Energy spectrum(c) Power density spectrum(d) None of the mentionedI had been asked this question in quiz.I want to ask this question from Frequency Analysis of Continuous Time Signal topic in section Frequency Analysis of Signals and Systems of Digital Signal Processing
Answer» The CORRECT choice is (c) Power density spectrum The BEST explanation: When we plot a graph of \|ck\|^2 as a function of FREQUENCIES KF0, k=0,±1,±2… the following spectrum is obtained which is known as Power density spectrum.

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