Q:
      
      
         
            
Slip rings are usually made of
         
       
      
      
      
          
      
      
          Answer & Explanation
         Answer: C) Phosphor Bronze         
         
Explanation: A Slip ring is a ring in a dynamo or electric motor which is attached to and rotates with the shaft, passing an electric current to a circuit via a fixed brush pressing against it.
 
Slip rings are usually made of Phosphor Bronze.
 
Slip ring motors usually have a 'phase-wound' rotor. This type of rotor has a 3-phase, double-layer, distributed winding consisting of coils used in alternators. The rotor core is made up of steel laminations which have slots to accommodate formed 3-single phase windings.

       
      
      
      
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