Question

3. The motor in problem (2) is taken to Kuwait where the supply frequency is 50 Hz. a) At what power supply voltage the motor should be operated and why?

b) What will be the new eq. circuit parameters if the motor is operated at 50 Hz? c) The motor is operated at full load and 5% slip. Determine the motor speed and rotor frequency. d) Determine the efficiency of the motor. Assume the rotational loss to be proportional to motor speed.

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