Q11 of 238 Page 91

What is the function of a commutator in an electric motor?

Its function is to reverse the current every time it reaches the vertical position in the coil.


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Name the device which is used to reverse the direction of current in the coil of a motor.

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What is the other name of the split ring used in an electric motor?

 12

Of what substance are the brushes of an electric motor made ?

 13

Of what substance is the core of the coil of an electric motor made?