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

تمرين 70

A three-phase abc -sequence wye-connected source supplies 14 kVA with a power factor of 0.75 lagging to a parallel combination of a wye load and a delta load. If the wye load consumes 9 kVA at a power factor of 0.6 lagging and has an a-phase current of 10 30° A rms, determine the phase impedance of the delta load.