International Library of Technology · Scranton, International Textbook Co. · leaf 247
disk isrotated between the poles of strong permanent magnets;the lines of force from the magnets cutting the disk set upelectromotive forces between adjacent points on the disk; ELECTRICAL MEASUREMENTS. 1681 the disk being of copper, the resistance between those pointsis very low, so that a… … Fig. 1029. coil increases directly as the watts; therefore, the numberof revolutions of the moving system of the meter will bedirectly proportional to the watts expended in the circuit;This meter may be used for either alternating or direct cur-rents, and gives very accurate results. Fig. 1029…
Electrical engineering
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