International Library of Technology · Scranton, International Textbook Co. · leaf 339
t to bus-barsM, M, and it is desired to connect machine B. The alter-nator B should be in step with A before being connected, 3712 THEORY OF ALTERNATING and in order to tell when this is the case, two small trans-formers have their primaries c and d connected as shown,corresponding terminals on… … Fig. 1567. exactly in phase, the E. M. F.s in e and f would just neu-tralize each other and the lamps would not light up; ifopposite in phase, they would light up to full candle-power.If the machines are not running in synchronism, the lampswill flicker, and the more nearly they get into…
Electrical engineering
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