Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise on the care and management of steam engines, boilers and electric machinery (1922)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1157
rrent and the changes occur about 100 times per second.Fig. 491 shows a cylindrical laminated core wound with are-entrant coil;, and mounted on bearings within the field.This core will rotate because the alternating currentspassing through the field coils will induce currents in itswires^ owing to… … Fig. 492three phase generator, and induction motor are from 5 to 10 per cent slovv^er than those of the rotaryfield. If it were made to synchronize with the field it wouldhave no induced polarity^ and no pull or torque would beexerted upon it. Therefore^ it constantly falls behind^,and the amount…
