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 265
Pigs. 2.117 and 2,US.—General Electric mercury arc bulbs or tubes for 200 and 10,000 voltcircuits. Ques. In the manufacture of rectifiers, could othermetals be used for the cathode in place of mercury? Ans. Yes. Ques. Why are they not used? Ans. Because, on account of the arc produced, they…
Electrical engineering
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