State the functions of the following features of a three-phase A.C. generator: Armature Exciter

Armature: The armature is the rotating part of the generator where the voltage is induced by the magnetic field. It is responsible for converting mechanical energy into electrical energy.

Exciter: The exciter is a small generator that supplies the initial current to the rotor windings of the main generator to create the magnetic field necessary for electricity generation. It ensures that the generator is self-sustaining and can produce electricity continuously.

Armature

- Generation of EMF: The armature is a rotating part that cuts through the magnetic field, generating an electromotive force (EMF) according to Faraday's law of electromagnetic induction.
- Current Induction: The EMF induced in the armature causes current to flow through the external circuit, generating electrical power.

Exciter

- Pole Magnetization: The exciter is a small DC generator that supplies current to the field windings of the main generator.
- Field Creation: The current flowing through the field windings creates a magnetic field in the stator poles, which is necessary for the armature to generate EMF.
- Regulation: The exciter can adjust the current to the field windings to regulate the generator's output voltage. This ensures that the generator maintains a stable voltage level despite varying loads.