International Library of Technology · Scranton, International Textbook Co. · leaf 355
1 to which the rings areconnected are directly under the brushes a^ a; that is, themaximum value of the alternating E. M. F. is equal tothe continuous E. M. F. For example, if the continuousE. M. F. were 100 volts, the effective volts on the alternating- current side would be 4/2 70.7 volts.… … winding h, r, c/, and ^, Fig. 1577, to four collector rings, wewould have a two-pole two-phase, or quarter-phase, trans- CURRENT APPARATUS. 2729 former. In this case we would have two pairs of lines lead-ing from the brushes i, 1, 2, 2. The E. M. F. between1 and 1 or between 2 and 2 would be given…
Electrical engineering
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