Theory and calculation of alternating current phenomena . 24 ALTERNA TING-CURRENT PHENOMENA of impedance, 0E\, of the line, the component, OE-i, of theimpressed voltage is required which, with the other component,OE, must give the impressed voltage, OEo. As shown, we can represent the voltages produced in a circuitin two ways—either as counter , which combine with theimpressed voltage, or as parts, or components, of the impressedvoltage, in the latter case being of opposite phase. Accordingto the nature of the problem, either the one or the other way maybe Ei Ej /I Ei 0 / e
Theory and calculation of alternating current phenomena . 24 ALTERNA TING-CURRENT PHENOMENA of impedance, 0E\, of the line, the component, OE-i, of theimpressed voltage is required which, with the other component,OE, must give the impressed voltage, OEo. As shown, we can represent the voltages produced in a circuitin two ways—either as counter , which combine with theimpressed voltage, or as parts, or components, of the impressedvoltage, in the latter case being of opposite phase. Accordingto the nature of the problem, either the one or the other way maybe Ei Ej /I Ei 0 / ei i/ Ea es Fi(i. 14. Fig. qE\OE2 As an example, the voltage consumed by the resistance is Ir,and in phase with the current; the counter of resistance isin opposition to the current. The voltage consumed by thereactance is Ix, and 90° ahead of the current, while the ^of reactance is 90° behind the current; so that, if, in , 01 is the current. OEi = voltage consumed by resistance,= counter of resistance,= voltage consumed by inductive reactance, OEj> = counter of inductive reactance, OE3 = voltage consumed by impedance, OEz = counter of impedance. Obviously, these counter are different from, for instance,the counter of a synchronous motor, in so far as they haveno independent existence, but exist only through, and as long asthe current exists. In this respect they are analogous to theopposing force of friction in mechanics. 21. Coming back to the equation found for the voltage at thegenerator end of t
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