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Questions
What is the function of the split rings in a d.c. motor?
Explain the function of a commutator in a DC motor.
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Solution
The split ring acts as a commutator in a d.c. motor. With the split ring, the direction of current through the coil is reversed after every half rotation of the coil, and thus the direction of the couple rotating the coil remains unchanged and the coil continues to rotate in the same direction.
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