Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1903)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 419
er E. M. F, in a motoris that it regulates the currentwithout absorbing the elec-trical energy, as in a rheostat,,where the extra energy is dissipated as heat; motors canthus be run very economically. The automatic regulation ofthe current, as the motor attains its normal speed, is shownin the… … j. 375.—Motor Windings Protectedby Cast Iron Housing. DIRECT CURRENT MOTORS. 401 Table XXII.-Motor Test. Speed—Revolutionsper minute. Amperes. Speed—Revolutionsper minute. Amperes. 0 5001000 20.016.212 2 160018001950 7.86.15.1 At the maximum speed the motor in the above test receives 5.1amperes, or…
Electricity · Magnetism
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