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 316
Fig. 2.577.—General Electric synchronizing receptacle and plug for use with synchronismindicator. … Fig. 2.57S.—Westinghouse rotating field type power factor meter. The rotating field is pro-duced by the currents of the metered circuits in angularly placed coils, one for each phaseof the system, in the case of polyphase meters. In the three phase meter the rotatingfield is produced by three coils…
Electrical engineering
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