It consists of a permanent magnet with two poles. A single turn rectangular coil is kept in the vicinity of the permanent magnet. The coil is made up of conducting material like copper or aluminium.
|Fig. 1 Single turn coil|
|Fig. 2 Single turn alternator|
|Fig. 3 The different instants of induced e.m.f.|
|Fig. 4 Graphical representation of the induced e.m.f.|
The action of commutator is discussed later.