Practical Demonstration
To demonstrate how the cage rotor works, the stator of a single-phase motor and a copper pipe (as rotor) may be used. If adequate AC power is applied to the stator, an alternating magnetic field revolves around the stator. If the copper pipe is inserted inside the stator, there will be an induced current in the pipe, and this current produces another magnetic field. The interaction of the stator revolving field and motor induced field produce a torque and thus rotation.
Read more about this topic: Squirrel-cage Rotor
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