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