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 132
Fig. 9tiH.—Telegraph and telephone Unaglass insulator. Flo. 967.—Type of insulator used in making ;transposition. systems, the transposition of some one circuit is amply sufficient to securebalanced relations and effectually counteract the effects of cross induc-tion. It is a matter which must be…
Electrical engineering
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