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Calculate the active power in a 315 F capacitor.(a) 45 W(b) 81 W(c) 0 W(d) 64 WThis question was posed to me in an internship interview.This interesting question is from Solar Powered Vehicles in section Solar and Battery Powered Drives of Electric Drives

Answer»

The correct OPTION is (c) 0 W

For EXPLANATION: The capacitor 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 capacitor so the angle between V & I is 90°. P = VIcos90° = 0 W.



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