A continuous-time signal x(t) is defined as an Energy Signal if its total energy E and average power P satisfy:
A0 < E < infinity and P = 0
BE = infinity and P = infinity
CE = infinity and 0 < P < infinity
DE = 0 and P = 0
Explanation
Energy signals have finite total energy (0 < E < infinity), which makes their average power calculated over infinite time equal to zero.
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