Difference squirrel cage rotor and wound or slip cage rotor

Squirrel cage rotor Wound or slip cage rotor
This rotor is in the form of bars which are shorted at the end with the help of end rings. This rotor is in the form of 3 phase winding.
In squirrel cage rotor no slip rings or brushes. In wound or slip rotor slip rings and brushes are used.
It has a simple construction. It has complicated construction.
External resistance cannot be connected. It is possible to connect external resistance.
It has less rotor copper loss. It has high rotor copper loss.
In squirrel cage rotor resistance starter cannot be used. In slip cage rotor resistance starter can be used.
Used in fans, water, pump etc.
It include in crane, elevators, compressors, lifts etc.

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