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 271
t magnet F, which acts as a damper on the oscillation of the movingelement, but does not cause any friction or affect the accuracy of the calibration. Theprimary, like that of a transformer, is an independent electrical circuit and may be highlyinsulated. This meter will withstand several hundred… … Pics. 2.508 to 2.511.—Hoskins instruments.Fig. 2,508. voltmeter,small pattern; fig.2,509, ammeter, largepattern; fig. 2.510.voltmeter, horizontaledgewise pattern; fig.2.511, illuminateddial voltmeter. INDICATING DEVICES 1,791 Ques. Describe the rotary field type of inductioninstrument. Ans. The…
Electrical engineering
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