Question

Total energy possessed by a signal exp(jwt) is?

(a) 2pi/w

(b) pi/w

(c) pi/2w

(d) 2pi/3w

I had been asked this question during an online interview.

Origin of the question is The Complex Exponential in section Signals and Systems Basics of Signals and Systems

Answer 1

The correct answer is (a) 2pi/w

Best explanation: Energy possessed by a periodic signal is the integral of the square of the magnitude of the signal over a time period.