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

Exercise 91

In a balanced three-phase wye-wye system, the load impedance is 20 + j 12 . The source has an abc -phase sequence and V an =120 0° V rms. If the load voltage is V AN = 111.49 0.2° V rms, determine the magnitude of the line current if the load is suddenly short-circuited.