Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 56
in-duction motor? Ans. If the armature had no weight and there was no frictionoffered by the bearings and air, it would revolve in synchronismwith the rotating magnetic field, that is, the slip would be zero;but since weight and friction are alwavs present and constitute 1,314 IIAUKIXS ELECTRICITY… … Fig. 1,719.—General Electric vertical type induction motor; sectional view showing oilingsystem. It is provided with ball thrust bearings and top and bottom guide bearings, anda continuous flow of oil is maintained through all the bearings by means of a pump whichis made integral with the motor.…
Electrical engineering
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