Abstract

In electric motors, electrical energy is transformed to mechanical energy or vice versa. Electrical energy has to be transformed from a stationary component into moving one, which is done by copper commentator in sliding contact with graphite brushes.
This study includes a technical method to prepare metal – graphite composite brushes. The prepared brushes are tested and found to have mechanical and electrical properties agree with standards.
Key wards : Metal- graphite composite , Brushes , Copper .

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