Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 203
n phase relation between current and potential. Frequency Indicator. The General Electric frequency indicatorhas two coils on the moving element, one having a reactance inseries and one having a noninductive resistance in series. A fixedcoil is connected in series with the other two which are in… … Fig. 52. Westinghouse SynchroscopeCourtesy of Westinghouse Electric and Manufacturing Company circuits, and therefore the pointer will move with each change infrequency. The Westinghouse frequency indicators consist of two inductionvoltmeter elements connected to act in opposition. One of…
Electrical engineering
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