Explain slip-ring, Physics

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Explain Slip-ring

Slip-ring (or phase- wound)  rotor having of a slotted laminated core of sheet steel. A three- phase winding is placed in the rotor slots. The rotor winding is usually linked in star, though it might be connected in delta also. The free-ends of the rotor windings are brought out, and linked to three  slip-rings mounted on the rotor shaft. In this case, depending upon the necessity any external resistance can be added in the rotor circuit. 

 

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