electrical engineering

Question

an alternating circuit the applied voltage is V= 100-j50 and current in the circuit is given by i=3-j4 determine real and reactive power

Answer 1

For complex power, S = VI* = (100-j50)(3+j4) = 300 + j400 - j150 + 200 = 500 + j250.

Real power = 500 (units)

Reactive power = 250 (units)