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 229
s in fig. 222, they are not always good, even thoughthin. It is better that they should be extended as in fig. 223 so thatthey may be saturated by the leakage field or else cut off as in fig. 224. An extreme design, suggested by Dobrowolsky, as shown in fig. 225,surrounds the armature with iron.… … Fig. 228—Non-concentric pole faces; one method of. securing suitable magnetic fringewith fair magnetic rigidity of field. i j \ * Figs. 229 to 231.—Various shapes of pole piece for securing a gradual entrance of the armatureinductors into the magnetic field. working at small loads, the field in the…
Electrical engineering
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