1. (a) A three-phase delta-connected synchronous induction motor has a six pole stator winding and is connected to a 415 volt 50 Hz supply. The winding resistance is negligible and the synchronous reactance per phase is 3 ohms. The input power is 25 kW and the motor has a leading power factor of 0.8.

Calculate the stator reactive voltage drop IXs and hence with

reference to a phasor diagram calculate the magnitude of the

generated voltage E.

(b) Confirm the calculated value of E by constructing the phasor

diagram to scale and measuring E.