Electric generator is a device or machines that covert the mechanical energy into electrical energy as the output. It is very important to understand that a generator does not actually creates electrical energy; instead it uses the mechanical energy supplied to it to force the movement of electric charges present in the wire of its windings through an external electric circuit.

An electric conductor such as copper wire moving through a magnetic field, electric current will flow, through the conductor. The moving wire’s mechanical energy is converted into electrical energy, when a magnet is moved in a coil of wire, electric current is generated.

A generator is basically created by a mechanical force that turns a conductive wire or bar within a magnetic field. The force used to spin the conductive object can be provided by many sources, such as moving water, steam, wind, gas engine or even hand-cranked levers.