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 65
asfollows: 1. Tendency of the teeth to induce eddy currents in the pole pieces; 2. Increased self -induction of the armature coils; THEORY OF THE ARMATURE 277 3. Greater hysteresis loss on account of denser flux in the teeth; 4. Leakage of lines of force through the core, especially in the case of… … Fig. 296.—Effect of slotted armature. The teeth, as they sweep past the pole face, causeoscillations of the magnetic flux in the iron near the surface because the lines in the polepiece PP tend to crowd toward the nearest teeth, and will be less dense opposite theslots. This fluctuation of the…
Electrical engineering
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