4. A 5-hp, wye-connected 3-phase induction motor is operating at its full-load. The line voltage

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4. A 5-hp, wye-connected 3-phase induction motor is operating at its full-load. The line voltage is 220 V. and the line current 15 A. a) what is the power factor of the motor? b) Find the per-phase impedance of the motor. (1 hp = 746 W)