Practical applied electricity; a book in plain English, for the practical man. Theory, practical applications and examples (1911)
Moreton, David Penn, 1882- · Chicago, The Reilly & Britton co · leaf 174
and (R) a rheostat suitable for changing the value of the current in the circuit bya change in its resistance. A standard resistance may be connected in series with anammeter and the current in the circuit determined by divid-ing the drop over the resistance—which may be determinedby means of a… … Fig. 123 164 PRACTICAL APPLIED ELECTRICITY meter or a watt-hour meter by means of a voltmeteran ammeter are shown in Fig. 124. The current in theseries coil of the wattmeter exceeds that in the ammeter byan amount equal to the current in the voltmeter. The truepower, then, should be calculated by…
Electrical engineering
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