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

Exercise 53

An abc -phase-sequence three-phase balanced wye-connected 60-Hz source supplies a balanced delta-connected load. The phase impedance in the load consists of a 20- resistor series with a 20-mH inductor, and the phase voltage at the source is V an =120 30° V rms. If the line impedance is zero, find the line currents in the system.