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A signal is a power signal if the signal has average power equal to __________

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in Signals and Systems by (1.2m points)
A signal is a power signal if the signal has average power equal to __________

(a) Infinite

(b) Finite

(c) Zero

(d) Does not depend on the average power value

The question was posed to me in an interview for internship.

My question comes from Average Power and Energy of a Signal topic in division Fourier Series of Signals and Systems

1 Answer

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by (42.1k points)
The correct choice is (b) Finite

Explanation: A signal is said to be a power signal if and only if the average power of the signal is finite. In other words, we can say that a signal is a power signal if the energy of the signal is infinite, i.e., E = ∞.

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