The stator surrounds the rotor, and frequently retains subject magnets, that happen to be either electromagnets (wire windings all-around a ferromagnetic iron core) or long-lasting magnets. These develop a magnetic field that passes in the rotor armature, exerting power over the rotor windings. The stator Main is created up of many slender steel sh

Encyclopaedia Britannica's editors oversee issue spots during which they have extensive information, no matter whether from a long time of practical experience obtained by engaged on that content material or by way of study for an advanced degree. They write new information and validate and edit written content gained from contributors.Brooks prese