Slip rings are usually made of
A. Copper
B. Carbon
C. Phosphor bronze
D. Aluminium
Answer: Option C
Solution (By Examveda Team)
Slip rings in polyphase induction motors are typically made of phosphor bronze. This material is chosen because it has excellent wear resistance and conductivity. Phosphor bronze also provides a good balance between conductivity and durability, which is essential for the efficient operation of the slip rings in the motor.This Question Belongs to Electrical Engineering >> Polyphase Induction Motors
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