Dynamo electric machinery; its design, construction, and operation; direct-current machines (1915)
Sheldon, Samuel, 1862-1920, Hausmann, Erich, 1886- joint author · New York, D. Van Nostrand Company; · leaf 228
ine wasoperated as a generator, the directionof armature current having been re-versed, then the demagnetizing orback turns of the generator wouldbecome magnetizing turns for themotor; but with the brushes shifted to a position of lag,then the motor has also demagnetizing or back turns. 95. Power… … Fig. 132. P = ojT 60 T. But the torque exerted, in dyne-centimeters, is 10- (§92) MOTORS. 217 Therefore P = [2 p^S ~\ — • But the quantity m the brackets is equal to 10^ E^. (§93)Whence dvne-cm. „ ., P = EJt lo^ -^ = EJt watts. sec. Thus, the rate at which a motor does mechanical work isequal to…
Electric machinery
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