International Library of Technology · Scranton, International Textbook Co. · leaf 470
ircuit — b is connected at the point z, so that the number of 6 ELECTRIC LIGHTING. 19 resistances will correspond to the number of lamps on thecircuit to be tested. The switch arm is then moved over tothe right until the galvanometer deflection comes to zero.In this case, the deflection will become… … Fig. 4.the arc line; hence, when a point is reached when the dropin pressure from a-\- around to the ground is equal to thedrop in the artificial line, the two pressures counterbalanceeach other, as indicated by the arrows, and no current flowsthrough the galvanometer. As soon as the point…
Electrical engineering
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