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 20
CTRICITY ranges from about one-third that of the outside Hne, in larj^^ecentral station systems, to the same as that of each outside hnein small isolated systems. If the neutral wire be made one-half the size of the outside conductor,as is usually the case in feeders, the amount of copper required… … Fig. 795.—Dobrowolsky three wire system with self-induction coil. It consists of an ordinarydirect current dynamo, the armature A and pole pieces N and S of which are shown. Aself-induction coil D, is connected to two diametrically opposite points of the winding ofthe armature A. The coil D may be…
Electrical engineering
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