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 266
not used? Ans. Because, on account of the arc produced, they wouldgradually wear away and could not be replaced conveniently. 1,524 HAWKINS ELECTRICITY In the case of mercury, the excess vapor is condensed to liquid formin the large glass bulb or condensing chamber of the tube and gravitatesback to… … Fig. 2,119.—General Electric series mercury arc rectifier outfit; view showing method ofreplacing a tube. The illustration also shows tube carrier and drip tray. through the tube to the air, and in large tubes such as used insupplying 40 to 60 lew. for constant current flaming arc lightsoperating…
Electrical engineering
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