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 66
r ventilation. mass of iron, as in fig. 1,741; he regarding the bars merely asveins of copper lying buried in the iron. A solid cylinder of iron will of course serve as an armature, as it ismagnetically excellent; but the high specific resistance of iron preventsthe flow of induced currents taking… … the bars pass. Lips are
Electrical engineering
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