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A three phase Wye-connected 460 v, 4 poles, 60 Hz wound rotor induction motor has the...

A three phase Wye-connected 460 v, 4 poles, 60 Hz wound rotor induction motor has the following parameters:

R1=0.3, R2=0.15, X1=0.5, X2=0.2, Xm=14

The total friction, windage, and core loss is constant at 400 w. The motor is working at its rated voltage and drives its load at 1764 rpm.

a)Calculate the input current and the input power.

b)Calculate the output mechanical power and torque and motor efficiency.

c)Calculate the starting current of this motor and compare it with its full load current of part a. How can we reduce this starting current

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