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), 1833-1928 · New York : T. Audel & Co. · leaf 228
utat heavy loads, the distortion due to the armature current forces the flux forward andsaturates the forward horn, thus preventing much change in its flux density, on accountof the saturation, and the diminishing area. Lundell combined the unsymmetrical andslotted forms of pole piece as shown in… … Fig. 227.—Pole piece with oblique slots; a modification of Lundells form of pole piece assuggested by Thompson. In operation, the neck of the casting becomes saturated andoffers considerable reluctance, which tends to prevent distortion of the magnetic field. It is important that the field should…
Electrical engineering
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