Slip rings are usually made of__________?
Correct answer: B. brass or steel
- A. carbon or graphite
- B. brass or steel
- C. silver or gold
- D. copper or aluminium
Explanation
Slip rings require good mechanical strength, wear resistance, and adequate conductivity, so brass or steel is commonly used depending on the construction. Carbon or graphite is normally associated with brushes, not slip rings.
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