Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 197
powerfactor at full load varies from 85 to 90^ per cent. Motors of thistype operate at constant speed. Variable-speed a. c, motors will beconsidered later. Reversing. To reverse the direction of rotation of inductionmotors, interchange leads as follows: For a two-phase four-wiremotor, interchange… … Fig. 47. Exploded View of Crocker-Wheeler Induction Motor Output. The output of an induction motor varies with thesquare of the voltage at the motor terminals. If, for instance,the terminal voltage happens to be 15 per cent low (85 per centof the rated voltage), a motor, which at the rated voltage…
Electrical engineering
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