A balanced, positive-sequence wye-connected source has Van = 240?0° V (rms) and supplies an unbalanced delta-connected load via a transmission line with impedance 2 + j3 ? per phase.
(a) Calculate the line currents if Z?? = 40 + j15 ?, Z?? = 60 ?, Z?? = 18 – j12 ?.
(b) Find the complex power supplied by the source.
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