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 388
he value marked on the name plate. ELECTRIC LIGHTING 2,479 Retrimming.—Whenever new carbons are placed in the lamp, themechanism of the lamp should be carefully cleaned by means of a smallbrush, and the inside of all globes should be relieved of all deposits.In flaming arc lamps the steadiness of… … fc*-~ ..-.•V (8«?; -£5 Fig. 3407.—Light distribution of alternating current arc. Case II, upper carbon negative.At this instant, during each cycle of the alternating current, a condition the reverse of thatdepicted in fig. 3,406 takes place, that is, the lower crater gives the greater amount of…
Electrical engineering
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