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

Exercise 5

An abc -phase-sequence three-phase balanced wye-connected source supplies power to a balanced delta-connected load. The impedance per phase in the load is 14 + j 7 . If the source voltage for the a phase is V an = 120 80° V rms and the line impedance is zero, find the phase currents in the wye-connected source.