Lessons in practical electricity; principles, experiments, and arithmetical problems; over four hundred illustrations; an elementary text book (1909)
Swoope, C. Walton (Coates Walton), d. 1901 · New York, D. Van Nostrand company · leaf 419
r Windings Protected without absorbing the elcc-by Cast Iron Housing. L • i • * J b tncal energy, as m 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… … DIRECT CURRENT MOTORS. K>1 Table XXII.—Motor Test. Speed-Revolutions A per minute. * 0 20.0 500 16.2 1000 12 2 per minute. * L600 7.S 1800 6.1 1950 5.1 At the maximum speed tin* motor in the above test receives 5.1amperes, or about one-fourth of the current which would flow throughit at rest. If…
Electricity · Magnetism
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