A 30 hp, 400V, 4pole, 50Hz,Y- connection. 3phase induction motor. Find motor output torque and efficiency at rated slip of 3%, if the total motor impedance per phase is 12/30°, and rotational losses are 1000W, RI = 0.6/ph? B- State five methods for speed control of three phase induction motors?

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A 30 hp, 400V, 4pole, 50Hz,Y- connection. 3phase induction motor.
Find motor output torque and efficiency at rated slip of 3%, if the total motor impedance per phase
is 12/30°, and rotational losses are 1000W, RI = 0.6/ph?
B- State five methods for speed control of three phase induction motors?
Transcribed Image Text:A 30 hp, 400V, 4pole, 50Hz,Y- connection. 3phase induction motor. Find motor output torque and efficiency at rated slip of 3%, if the total motor impedance per phase is 12/30°, and rotational losses are 1000W, RI = 0.6/ph? B- State five methods for speed control of three phase induction motors?
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