An elementary book on electricity and magnetism and their applications (1919)
Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 435
piece of metalwhich is free to rotate will rotate when placed within thisrevolving magnetic field. But the rotor can never spin quiteso fast as the magnetic field. This difference between thespeed of the field and the rotor is called the slip. The rotor ofa commercial induction motor consists of an… … Fig. 271. — Various types of rotors for same stator. A, wound rotor withslip rings; B, wound rotor with internal resistance controlled by leverfrom end of shaft; and C, squirrel-cage rotor with ventilating vanes. ALTERNATING-CURRENT MOTORS 393 which are connected across the ends, act like a closed…
Electricity · Magnetism
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