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500 hp, 600 V, 0.8 pf leading, 6-pole, delta-connected synchronous motor has XS = 1.2 ohm...

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Electrical Engineering

500 hp, 600 V, 0.8 pf leading, 6-pole, delta-connectedsynchronous motor has XS = 1.2 ohm and RA = 0ohm. Assume motor is lossless.

(a) Calculate EA and IA for 400 hp, 0.85leading pf load.

(b) What is the torque?

(c) If |EA| is increased by 20% for the 400 hp load,what are the new values of IA and power factor?

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