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 28
FlCS. 1.241 to 1,244.—Various forms of pressure or current waves. Figs. 1,241 to 1.243 showthe general shape of the waves produced by some alternators used largely for lightingwork and having toothed armatures. The effect of the slots and shape of pole pihere very marked. Fig. 1,244 shows a wave…
Electrical engineering
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