5-17. A 440-V, 60 Hz, three-phase Y-connected synchronous motor has a synchronous reactanc...

5-17. A 440-V, 60 Hz, three-phase Y-connected synchronous motor has a synchronous reactance of 1.5 per phase. The field current has been adjusted so that the torque angle when the power supplied by the generator is 80 kW.

(a) What is the magnitude of the internal generated voltage EA in this machine?

(b) What are the magnitude and angle of the armature current in the machine? What is the motor's power factor?

(c) If the field current remains constant, what is the absolute maximum power this motor could supply?