A three phase 10kW, 1700rpm, 60Hz, four poles, Y connected induction motor has a no-load speed...

A three phase 10kW, 1700rpm, 60Hz, four poles, Y connected induction motor has a no-load speed of 1750rpm. The rotational mechanical losses are constant and equal to 500W. The core losses are constant and equal to 300W. The copper losses in the stator equal to the copper losses in the rotor at full load. If the rotor resistance per phase is 0.25?, calculate the following:
a.The frequency of the induced current in the rotor circuit at full load.
b.The percentage speed regulation of the motor.
c.The efficiency of the motor at full load.
d.The power transferred in the air gap at full load.
e.If the starting torque of the motor is five times the full load torque, calculate the starting currentin the rotor circuit.

Expert Solution

Manojponduru answered 2 years ago

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