Electricity experimentally and practically applied; a book for the beginner and for the practical man, principles, experiments, practical applications and problems (1910)
Ashe, Sydney Whitmore · New York, D. Van Nostrand company · leaf 295
Fig. 349. — Vector Relation of Admittances. … Fig 350. —Power in a Single-phaseCircuit. 274 EXPERIMENTAL ELECTRICITY current and pressure values are positive, + x + = +, andpositive values when both current and pressure values arenegative, — x — = +. If current and pressure values arepositive and negative, the power will be negative, + x — =…
Electricity · Electrical engineering
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