IN TWO WATTMETER METHOD WE GOT W1,W2,WE KNOW V.HOW TO FIND
Q????????????

Answer Posted / kiran

active power P = W1+W2

reactive power Q = 1.732(W1-W2)


so power factor cos theta = Tan-1((1.732(W1-W2)/(w1+w2))

i.e. cos theta = tan-1(reactive power/active power)

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