Question

A particular current is made up of two components: a 10 A and a sine wave of peak value 14.14 A. The average value of current is _________

(a) Zero

(b) 24.14 A

(c) 10 A

(d) 14.14 A

I have been asked this question in an interview.

This intriguing question originated from Speed Control of Series Motor in division Speed Control of Direct Current Motors & Induction Motors of Electric Drives

Answer 1

Correct choice is (c) 10 A

Easiest explanation: Average value of DC current is 10 A. Average value of AC current is 0 A as it is alternating in nature. The average value of current is 10+0 = 10 A.