Calculate the active power in a 41 H inductor.(a) 2 W(b) 1 W(c) 0 W(d) .5 WThis question was posed to me during an interview.My question is from DC Motors topic in portion Characteristics of DC & AC Motors of Electric Drives

Calculate the active power in a 41 H inductor.(a) 2 W(b) 1 W(c) 0 W(d)

1.	Calculate the active power in a 41 H inductor.(a) 2 W(b) 1 W(c) 0 W(d) .5 WThis question was posed to me during an interview.My question is from DC Motors topic in portion Characteristics of DC & AC Motors of Electric Drives
Answer» The correct answer is (C) 0 W The best I can explain: The inductor is a linear element. It only absorbs reactive power and stores it in the FORM of oscillating energy. The voltage and current are 90° in phase in case of the inductor so the angle between V & I is 90°. P = VIcos90 = 0 W. Voltage leads the current in case of the inductor.

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