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 86
ow the arcto continue during several cycles and then to break the current, usuallyat the zero point of the wave. SWITCHING DEVICES 1,605 Remote Control Oil Switches.—It is desirable in the easeof switches on high pressure circuits to locate the parts whichcarry the high pressure current at some… … € €-
Electrical engineering
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