Monday, October 7, 2013

The input of an ac circuit having pf of 0.8 lag is 20 KVA. The power drawn by the circuit is .........KW

The input of an ac circuit having pf of 0.8 lag is 20 KVA. The power drawn by the circuit is .........KW

A. 12
B. 20
C. 16
D. 8

Explanatory answer:

 KVA= VI*10^3

Power  = VI * PF

Power drawn = KVA*PF = 20 * 0.8 = 16 KW

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