Basic Engineering Circuit Analysis 11th Edition by David Irwin ,Robert Nelms

Exercise 85

A delta-connected three-phase source with a positive phase sequence is connected through a transmission line with an impedance of 0.05 + j 0.1 per phase to a wye-connected load with a per-phase impedance of 20 + j 8 . The source voltages are V ab = 208 40° V rms, V bc = 208 80° V rms, and V ca = 208 200° V rms. Determine the line currents, the magnitude of the line voltage at the load, and the real power loss in the lines.