A single-phase load is fed through a 66-kV feeder whose impedance is 120 + j 400 Ω and a 66/6.6 kV transformer whose equivalent impedance (referred to LV) is 0.4 + j 1.5 Ω. The load is 250 kW at 0.8 leading power factor and 6 kV.
(a) Compute the voltage at the sending-end of the feeder.
(b) Compute the voltage at the primary terminals of the transformer.
(c) Compute the complex power input at the sending-end of the feeder.