Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 339
) synchronism = Synchronous speed. 326 TESTS OF DYNAMOS AND MOTORS. % real efficiency = % apparent efficiency = Power factor - _ Output of motor X 100Input by wattmeter Output of motor x 100volt x amperesWatts _ apparent efficiency Volt X amperesTorque-pounds pull at 1 ft. radius = real… … Fig. 16. Curves of results of tests of induction motor. Synchronous motor.—Synchronous motors are separately excited,and the D. C. exciter should have its qualities tested as a dynamo. Syn-chronous motors are tested for Break-down point; Starting current at differ-ent points of location of the…
Electrical engineering
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