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 71
f the holes, but as in other lines, the makers will sooner orlater adopt a standard. Ques. How is film treated by the manufacturer beforeshipment? Ans. It is treated with glycerine. This keeps the film pliable, and delays drying out. Ques. What precaution should be taken with film? MOTION PICTURES… … Fig. 3,881.—Powers multi-tap transformer. It is without casing and is mounted on heavy legswhich support it several inches above the floor. The numerous leads are properly markedas shown, to distinguish them. Ques. How is a splice made? Ans. Cut one end on the line between pictures and cut theother…
Electrical engineering
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