Question

Discrete impulse signal is a power or energy signal?

(a) Power signal

(b) Energy signal

(c) Both  power and energy signal

(d) Neither power or energy signal

I had been asked this question during an interview for a job.

This intriguing question originated from Classification of Signals topic in division Signals and Spectra of Digital Communications

Answer 1

Right answer is (b) Energy signal

To explain I would say: On calculating using energy formula we will get the energy of this signal as 1 which is a finite value. Thus it is a energy signal.