| http://www.w3.org/ns/prov#value | - There are types of motors (such as induction motors) that generate a rotating magnetic field by means of electromagnets, and cause the rotor to follow this magnetic field; and types of motors (such as common, direct current electric motors) having a rotor, whose polarity can be inverted, rotatably disposed in the magnetic field of a permanent magnet stator to obtain a torque by magnetic flux inter
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