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), 1833-1928 · New York : T. Audel & Co. · leaf 142
positives into brown peroxide of lead and that ofthe negatives into gray spongy lead. Both the positive and negative plates are provided withlugs and in assembly the positives and negatives are separated by wood separators ribbedon the side against the positive. A positive and negative group,… … Figs. 4,024 to 4,026.—State of charge of cell as indicated by the density of the solution. Fig.4,024, cell fully charged; fig. 4,025, cell about half charged; fig. 4,026, cell almost discharged.How to test with hydrometer: Remove vent caps from the cells. To use hydrometer,squeeze the rubber bulb,…
Electrical engineering
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