The sending end and receiving end voltages of a three-phase transmission line are 10 kV/ph and 9.5 kV/ph, respectively. If the resistance drop is 150 V/ph and receiving end power factor is 0.8, the sending end power factor is

(A) 0.745 lagging (B) 0.775 lagging

(C) 0.8 lagging (D) 0.85 lagging
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The sending end and receiving end voltages of a three-phase transmission line are 10 kV/ph and 9.5 kV/ph, respectively. If the resistance drop is 150 V/ph and receiving end power factor is 0.8, the sending end power factor is 0.775 lagging

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Vscos¢s-Vrcos¢r=IR
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