## Circuit Analysis of A-C Power Systems...J. Wiley & sons, Incorporated, 1950 - Electric circuits |

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A-connected air-gap amperes applied approximately armature current armature voltage autotransformer axis base calculated capacitance Chapter circuit of Fig circular mils components of current constant currents and voltages d-c resistance determined diameter direct-axis EA/EB equations equivalent circuit exciting current fault field current flux linkages fundamental frequency fundamental space wave fundamental-frequency given ground wire grounded sheaths induction motor insulation kva per phase leakage reactance load magnetic magnetizing reactance magnitude mmf space waves mutual impedance negative negative-sequence currents neglected neutral normal ohms open conductor open-circuit operation permeance positive-sequence currents power factor proximity effect quadrature-axis radians rated voltage relay resistance ratio respectively rotating rotor salient-pole machine saturation curve sequence single-conductor cables single-phase skin effect stator stranded subtransient symmetrical components synchronous machine synchronous speed temperature terminal voltage third harmonic three-conductor cables three-phase circuit torque transformer bank ungrounded values voltage and current xci/xm zero zero-sequence currents zero-sequence impedance zero-sequence self-impedance

### Popular passages

Page 11 - ... temperature coefficient of resistance of standard annealed copper, measured between two potential points rigidly fixed to the wire, is 0.00393 = 1/254.45. . . . per degree centigrade. (4) As a consequence, it follows from (1) and (2) that, at a temperature of 20 "C. the resistance of a wire of standard annealed copper of uniform section, one meter in length and weighing one gram, is (1/58) X 8.89 = 0.15328 ohm.fS 676 Copper Wire Tables.

Page 11 - The following shall be taken as normal values for standard annealed copper: (1) At a temperature of 20°C., the resistance of a wire of standard annealed copper one meter in length and of a uniform section of 1 square millimeter is 1/58 ohm = 0.017241 ... .ohm. (2) At a temperature of 20"C., the density of standard annealed copper is 8.89 grams per cubic centimeter. (3) At a temperature of 20°C , the

Page 11 - At a temperature of 20°C , the " constant mass " temperature coefficient of resistance of standard annealed copper, measured between two potential points rigidly fixed to the wire, is 0.00393 = 1/254.45.

Page 54 - The dielectric constant k is defined as the ratio of the capacitance of a condenser, or capacitor, with a dielectric between the plates to that with a vacuum between the plates.

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Page 111 - Joint Subcommittee on Development and Research, Edison Electric Institute and Bell Telephone System.

Page 13 - The change of resistivity of copper per degree is a constant, independent of the temperature of reference and of the sample of copper. This "resistivity-temperature constant...

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