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A squirrel-cage rotor resembles a hamster or gerbil exercise wheel, and consists of a pair of ring-shaped conductors, connected together with numerous bar-shaped conductors. These bars are termed 'active conductors' because it is into these that voltages are induced by the machine's rotating magnetic field. The resulting currents circulate along the bars and return via the ring-shaped conductors which act to interconnect, or short-circuit, the common ends of the bar conductors.

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10y ago

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Why it is not possible to insert the external resistance in the rotor circuit in a cage induction motor?

A squirrel-cage rotor consists of uninsulated copper or alumnium bars, short-circuited by rings located at opposite ends, and semi-enclosed within a laminated iron rotor, and there is no provision for any form of external connection. So it would be quite impractical to do what you suggest.


Why is it not possible to insert the external resistance in the rotor circuit in a cage induction motor?

A squirrel-cage rotor consists of uninsulated copper or alumnium bars, short-circuited by rings located at opposite ends, and semi-enclosed within a laminated iron rotor, and there is no provision for any form of external connection. So it would be quite impractical to do what you suggest.


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