A three-phase, 480-V, six-pole, Y-connected, 60-Hz induction motor is driving a constant torque load of 80 Nm. The param

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A three-phase, 480-V, six-pole, Y-connected, 60-Hz induction
motor is driving a constant torque load of 80 Nm. The
parameters of the motor are:
R1 = 0.5 Ω, R2 = 0.3 Ω (actual rotor resistance), Xeq = 4Ω, N1 /
N2 = 2 (turn ratio between stator and rotor windings)
1) Calculate the magnitude of the injected voltage that would
reduce the motor speed to 800 rpm.
2) Calculate the power received by the injected voltage
source.
3) Compute the starting current and the starting torque with the
injected voltage.