Armature

An automotive armature is part of an electrical device which includes many current-carrying windings. It is a hollow cylinder, with coils of wire on its walls. These windings rotate within a magnetic field. It is an electromagnet made by coiling thin wire around two or more poles of a metal core. It is the stationary part of the electrical device and also known as a stator or pole core. It is part of an alternator.

Characteristics of Electric Armature

• Electric Armature current is also limited by heat.
• If the electric armature is fed with power, it is known as motor.
• It is supported in bearings which are set inside end plates.
• Usually, it has a ball bearing at the pulley end, a bronze bushing at the other end.

Functions of Armature
There are two main functions of the Armature:

• It carries current crossing the field, thus creating shaft torque or force
• It generates an electromotive force