Question

Brushes of D.C machines are made of​

Answer 1

Brushes of DC motor made of carbon....

Answer 2

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UR ANSWER IS HERE

Two or more electrical contacts called "brushes" made of a soft conductive material like carbon. The brushes are press against the commutator, making sliding contact with successive segments of the commutator as it rotates. The windings (coils of wire) on the armature are connected to the commutator segments

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