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 366
ls. The resistance of a coil of a transformermay be measured by the ordinary drop-of-voltage method. Thismethod consists in passing through the coil a direct current, thevalue of which is noted by an ammeter, while the drop of voltageacross the coil is measured by a voltmeter. Then the resistance… … Ammeter Transformer Fig. 287. Wiring Diagram for Core Loss and Exciting Current Test motive force is usually expressed in per cent of the electromotiveforce supplied to the primary. Impedance. One of the important constants of a transformeris its impedance ratio, that is, the ratio of the voltage…
Electrical engineering
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