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 369
2.75. The regulation for any other power factor p may be calculated in a similarmanner. Efficiency Calculation. The efficiency of any piece of apparatusat a given load is equal to the output divided by the input. Theinput is equal to the output plus the losses. The efficiency may thenbe defined as… … •. 5opo/y Ma/n k A -^WOVOltS- mm Fig. 289. Transformer Connectedfor Polarity Test Fig. 290. Wiring Diagram for Transform rPolarity Test ing to the second definition, than by attempting to measure the totaloutput and input, and then taking their ratio. Example. A given 5-kw. transformer is rated at…
Electrical engineering
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