Induction Motor

—An alternating current motor which does not run synchronously, or in step, with the alternations; an asynchronous motor, The currents supplied are led through the field coils only, and the armature, not being connected to the external circuit, is rotated by currents induced by the varying field set up through the field coils, the rotating part is termed the rotor, and the stationary part the stator. An induction motor shqnid be run as near its normal primary electromotive force as po ible, as the output and torque are directly proportional to the square of the primary pre ure. An induction motor develops its greatest torque on starting, and its least when running in step with the rotating field. If it be overloaded, it will slow down until the induced currents in the armature are sufficient to carry the load.