3 phase, 6 pole, 50 Hz induction motor is operating with rotor resistance R2 = 0.2 ohm/ph and speed 950 rpm, now the motor has to operate at speed 800 rpm then what value of resistance to be inserted in rotor circuit so as to maintain load torque constant.

All Questions › Category: Electrical Industrial Drives › 3 phase, 6 pole, 50 Hz induction motor is operating with rotor resistance R2 = 0.2 ohm/ph and speed 950 rpm, now the motor has to operate at speed 800 rpm then what value of resistance to be inserted in rotor circuit so as to maintain load torque constant.
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cs asked 5 years ago

Options

  1. 0.3 ohm/ph
  2. 0.4 ohm/ph
  3. 0.5 ohm/ph
  4. 0.6 ohm/ph
  5. 0.65 ohm/ph
1 Answers
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cs answered 5 years ago

The correct answer is 0.6 ohm/ph