International Library of Technology · Scranton, International Textbook Co. · leaf 515
one side of each of themachines at the points b, d, and _/, Fig. 30 (a). Anammeter cable that consists of two wires connected to adouble contact plug on each end is provided. One plug isinserted into the ammeter jack at b, d, or/and the otherend into jack k, thus connecting the ammeter in… … Fig. 29. 52 ELECTRIC LIGHTING. 19 fully drawn out, so that the circuit is not interrupted. Thetubular supports n, shown in Fig. 30 (c), are of insulatingmaterial, and the plugs pass through them to make contactwith the vertical strips. It will be noticed that there arethree breaks in each vertical…
Electrical engineering
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