Wiring diagrams of electrical apparatus and installations (1913)
McGraw-Hill · New York, McGraw-Hill Book Company · leaf 110
2; that is, inversely as the number of the turns. If the windingsare connected in series (first point of the controller) 5x turns are effective and the speed is aminimum; when connected in opposition, 3.c—2j;=x turns are effective and the speed is amaximum. Two intermediate running speeds are… … 100 WIRING DIAGRAMS OF ELECTRICAL APPARATUS
Electric wiring
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