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

Exercise 54

A balanced three-phase delta-connected source supplies power to a load consisting of a balanced delta in parallel with a balanced wye. The phase impedance of the delta is 24 + j 12 , and the phase impedance of the wye is 12 + j 8 . The abc -phase-sequence source voltages are V ab = 440 60° V rms, V bc = 440 60° V rms, and V ca =440 180° V rms, and the line impedance per phase is 1 + j 0.08 . Find the line currents and the power absorbed by the wye-connected load.