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subtractionPolar notationVector multiplication
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a.c. circuit active and reactive alternating current alternating voltage amperes angle f angular displacement calculation capacitive cloth gilt condenser connected considered corresponding cosh current and voltage current lagging current vector demy 8vo denoted direct current direction electrical equal in magnitude equation expression frequency galvanometer gives the vector graphical hyperbolic angle hyperbolic functions imaginary imaginary unit instantaneous value lead in phase length line currents line voltage load current maximum value negative notation obtained Ohm's law ohms phase difference phase quadrature phase voltage PITMAN polar expression positive power factor r.m.s. value ratio reactive component reactive currents real number reference line resistance resultant reversed rotor current seen semicircle shown in Fig sinh sinusoidal star voltage supply voltage symbol terminal voltages tion transformer triangle vector algebra vector diagram vector multiplication vector of voltage vector OI vectors of line voltage drop voltage vector volts wattmeter watts zero