Electric transmission of energy and its transformation, subdivision, and distribution. A practical handbook (1894)
Kapp, Gisbert, 1852-1922 · New York, Van Nostrand · leaf 259
re multiply the latter by the ratio O E O E cos <p O E,^ O E cos -^ cos {<p-4d 240 ELECTRIC TRANSMISSION OF ENERGY. If w be the true and w^ the apparent watts we havetherefore ic = w cos (p cos -^ cos (^—\J/) ^Q) The angle -^ being a constant appertaining to the instru-ment can be determined… … of coil B, The lag of / behind i can be determined from55) (only that in this case we do not get (p but <?—4^)5 sothat all the data required for the correction are known.Formula 60) can also be written a& follows: w = w 1 + tan- ^J/1 + tan -^ tan (p. from which it will be seen that there are…
Electric power production
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