A three-phase, 480 V, six-pole, 60 Hz, induction motor is driving a constant torque load of 80 Nm. The parameters of the motor are:



a. Calculate the magnitude of the injected voltage that would reduce the motor

speed to 800 rpm.

b. Calculate the power received by the injected voltage source.

c. Compute the starting current and the starting torque with the injected voltage.


a.

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