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 138
ssure. The reading is then proportional to thepower in the circuit. Fig. 647.—Diagram showing connections of Siemens electro-dynamometer as arranged toread watts. swings over the dial between two stop pins G, G, and restsdirectly over the zero line when the planes of the coils are atright angles to… … Figs. 648 to 650.—Wright demand Indicator. This is a device for registering the maximumampere demand of appreciable duration in any electrical circuit. It may be used on eitherdirect or alternating current circuits. The essential features and principle are as follows:A liouid is hermetically sealed…
Electrical engineering
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