An 60 Hz, three-phase induction motor has 2 poles and a rotor resistance of 0.19 per phase and runs at 3312 rpm at full load. Neglect the stator impedance, answer the following questions: . Calculate the additional rotor resistance that will reduce its speed to 2318.4 if torque is not changed. Rext S2 Rezt 30 ac supply S2 Stator . • Calculate the additional rotor resistance that will reduce its speed to 2318.4 if the torque is proportional to the square of the speed. Rotor Rotor resistance.

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An 60 Hz, three-phase induction motor has 2 poles and a rotor resistance of 0.19
per phase and runs at 3312 rpm at full load. Neglect the stator impedance,
answer the following questions:
• Calculate the additional
rotor resistance that will
reduce its speed to 2318.4
if torque is not changed.
Rext
52
Rext
30 ac
supply
52
Stator
Calculate the additional
rotor resistance that will
reduce its speed to 2318.4 if the torque is proportional to the square of the
speed.
Rotor
Rotor resistance.
Transcribed Image Text:An 60 Hz, three-phase induction motor has 2 poles and a rotor resistance of 0.19 per phase and runs at 3312 rpm at full load. Neglect the stator impedance, answer the following questions: • Calculate the additional rotor resistance that will reduce its speed to 2318.4 if torque is not changed. Rext 52 Rext 30 ac supply 52 Stator Calculate the additional rotor resistance that will reduce its speed to 2318.4 if the torque is proportional to the square of the speed. Rotor Rotor resistance.
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