International Library of Technology · Scranton, International Textbook Co. · leaf 477
inshunt with the right-hand field coil. Constant-current arcmachines are always series-wound, i. e., the field coils are §19 ELECTRIC LIGHTING. 13 connected directly in series with the armature. If a shuntis connected across one of the field coils, as in this case, thecurrent through that coil is… … Fig. 9. machines are, however, frequently operated without anyrheostat, especially if they are worked at nearly full load.Wis a recording wattmeter used to measure the total workdone by the machine. The current coil of this wattmeteris connected in series with the dynamo and lamps, and thepressure…
Electrical engineering
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