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A 400V, 2 pole, 50 Hz, three-phase induction motor is drawing 60 A at 0.85 PF...

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Electrical Engineering

A 400V, 2 pole, 50 Hz, three-phase induction motor is drawing 60A at 0.85 PF lagging. The stator copper losses are 2 kW, the statorcore losses are 1.8 kW and rotor copper losses are 700 W. Thefriction and windage losses are 600 W, the stray loss 100 W, androtor core loss 100 W.
Find the following quantities:
a. The air gap power.
b. The developed mechanical power.
c. The output power.
d. The efficiency of the motor.
e. The rotor speed when the slip is 2 %. Sketch the power flowdiagram and enter all data.

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