The Brushes on DC machine are always placed on—————, in order to achieve sparkles commutation?

The Brushes on DC machine are always placed on—————, in order to achieve sparkles commutation?

Q. The Brushes on DC machine are always placed on—————, in order to achieve sparkles commutation?

A.            MNA

B.            GNA

C.            Either GNA or MNA

D.            None of the above

Answer: MNA

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