Question

Name one type of loss of energy in ac generator and state how it is remedied.

Answer 1

Both AC and DC generators produce currents using electromagnetic induction. In AC generators, the coil through which the current flows is fixed, and the magnet is moving. The magnet’s north and south poles cause the current to flow in opposite directions, producing alternating current.With DC generators, the coil through which the current flows rotates in a fixed field. The two ends of the coil attach to a commutator, different halves of a single, rotating split ring. Metal brushes connect these split rings to an external circuit. The commutator balances the charges leaving and returning to the generator, resulting in a current that does not change direction.