Electrical machinery; a practical study course on installation, operation and maintenance (1921)
Annett, Fred Anzley · New York [etc.] McGraw-Hill book company · leaf 125
age drop across each rcsidance isproportional to the resistance the voltage is measured across.In Fig. 119, R^ is 2.13 times as great as R; likewise, the volt-age marked e^ the potential across R^, is 2.13 times as greatas e, the voltage across R. This rule holds true under all con-ditions. In… … VOLTMETERS ■ -E-235 -Measuring an unknown resistance with known resistance andvoltmeter. Measuring High Resistance.—For measuring very liighresistances such as the insuhition resistance of electricalmachinery or circuits, a voltmeter is used not only to meas-ure the drop of potential, but also as…
Electric machinery
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