Question: 5 . 1 . A 6 9 - k V , three - phase short transmission line is 1 6 km long. The line has

5.1. A 69-kV, three-phase short transmission line is 16 km long. The line has a per phase series impedance of 0.125+j0.4375 per km . Determine the sending end voltage, voltage regulation, the sending end power, and the transmission efficiency when the line delivers
(a)70MVA,0.8 lagging power factor at 64 kV .
(b)120 MW , unity power factor at 64 kV .
5 . 1 . A 6 9 - k V , three - phase short

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