Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1902)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 419
r 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 shoAvnin the… … Fig. 375.—Motor Windings Protectedby Cast Iron Housing. DIRECT CURRENT MOTORS. 401 Table XXII.—Motor Test. Speed-Revolutions Amperes,per miuiite. i ^^f^^^- 0 j 20.0 500 16.2 1000 12 2 Speed-Revolutions Amperes,per minute. ^^f^^^i. 1600 18001950 7.86.15.1 At the maximum speed the motor in the above…
Electricity · Magnetism
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