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What is the speed of the stator rotating magnetic field with respect to the rotor rotating magnetic field?
- a)Zero
- b)Slip speed
- c)Synchronous speed
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
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What is the speed of the stator rotating magnetic field with respect ...
The stator rotating magnetic field is rotating at Ns. The current-carrying rotor conductor also produces a rotor magnetic field of speed Ns.
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Therefore, the stator rotating magnetic field and rotor rotating magnetic field rotate at the same speed Ns in the air gap. They are stationary with respect to each other and make the rotor rotate at speed N. This happens at any slip.
Hence the correct option is A
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What is the speed of the stator rotating magnetic field with respect ...
Speed of the stator rotating magnetic field with respect to the rotor rotating magnetic field:
- The stator rotating magnetic field is the magnetic field generated by the stator winding in an AC induction motor.
- The rotor rotating magnetic field is the magnetic field generated by the rotor winding or the current induced in the rotor bars by the stator field.
- The speed of the stator rotating magnetic field is determined by the frequency of the AC power supply and the number of poles in the motor. This speed is known as the synchronous speed.
- The speed of the rotor rotating magnetic field is determined by the slip between the stator and rotor fields. This slip speed is the difference between the synchronous speed and the actual rotor speed.
- When the motor is running at synchronous speed, the stator rotating magnetic field and the rotor rotating magnetic field are stationary with respect to each other. Therefore, the speed of the stator rotating magnetic field with respect to the rotor rotating magnetic field is zero.
- If the motor is running at a speed other than synchronous speed, there will be a relative speed between the stator rotating magnetic field and the rotor rotating magnetic field. However, the speed of the stator rotating magnetic field with respect to the rotor rotating magnetic field will still be zero, as the two fields are always stationary with respect to each other.
- The stator rotating magnetic field is the magnetic field generated by the stator winding in an AC induction motor.
- The rotor rotating magnetic field is the magnetic field generated by the rotor winding or the current induced in the rotor bars by the stator field.
- The speed of the stator rotating magnetic field is determined by the frequency of the AC power supply and the number of poles in the motor. This speed is known as the synchronous speed.
- The speed of the rotor rotating magnetic field is determined by the slip between the stator and rotor fields. This slip speed is the difference between the synchronous speed and the actual rotor speed.
- When the motor is running at synchronous speed, the stator rotating magnetic field and the rotor rotating magnetic field are stationary with respect to each other. Therefore, the speed of the stator rotating magnetic field with respect to the rotor rotating magnetic field is zero.
- If the motor is running at a speed other than synchronous speed, there will be a relative speed between the stator rotating magnetic field and the rotor rotating magnetic field. However, the speed of the stator rotating magnetic field with respect to the rotor rotating magnetic field will still be zero, as the two fields are always stationary with respect to each other.
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What is the speed of the stator rotating magnetic field with respect to the rotor rotating magnetic field?a)Zerob)Slip speedc)Synchronous speedd)None of the aboveCorrect answer is option 'A'. Can you explain this answer?
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