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 253
e coefficient is placed inseries with the armature to bring it to normal value. Thisreduces to a marked extent the error introduced by achange in the resistance of the armature circuit. Experiment 140. Place a rotating standard in series with a service *meter, and check the service meter.… … Fig. 298.— Standardized Resistance used by the Boston Edison Company. 232 EXPERIMENTAL ELECTRICITY the potential. By means of a calibration curve it is possi-ble to determine the load when the voltmeter reading isknown. The load may be varied by a simple arrangementof switches. The resistances may…
Electricity · Electrical engineering
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