<P> In electrical engineering, an armature is the power - producing component of an electric machine . The armature can be on either the rotor (rotating part) or the stator (stationary part) of the electric machine . </P> <P> The armature interacts with the magnetic field (magnetic flux) in the air - gap; the field component can comprise either permanent magnets, or electromagnets formed by a conducting coil, such as another armature (i.e., doubly - fed electric machine). </P>

Rotating part of dc motor is known as