A two-wire feeder PQR has a load of 100 A at R and 50 A at Q,
both at p.f. 0.707 lagging. The impedance of PQ is (0.03 + j0.05)
Ω and that of QR is (0.07 + j0.015) Ω. If the voltage at the far end
R is to be maintained at 415 V, calculate the voltage at Q and P.
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