International Library of Technology · Scranton, International Textbook Co. · leaf 129
st long enough to do any harm.Besides, the tender should not, when the machine is cold,advance the rheostat handle bar at once to the position thatwill give the normal voltage when hot. The bar can begradually worked around to that position as the fieldsbecome heated. In a great many cases, the… … § 20 ELECTRIC RAILWAYS. 41 attendant will look at the ammeters, see that one dynamois taking more or less load than it should, and immediatelyproceed to give its rheostat bar a twist to even up the load.In a little while it will be necessary to give that same bar orsome other one another twist, and…
Electrical engineering
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