Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 57
tinuous stream of oil is delivered through all bearings. Ques. How is slip expressed ? Ans. In terms of synchronism, that is, as a percentage of thespeed of the rotating magnetic field. ALTERNATING CURRENT MOTORS 1,315 The slip is obtained from the following formula: Slip (rev. per sec.) = Sy—Sa… … PlG. 1.720.—Triumph back geared polyphase induction motor. A great many applications, especially for direct attachment, require the use of either a very slow or special speedmotor. As these are quite costly, the preferable arrangement, and one equally as satis-factory, is the use of a standard…
Electrical engineering
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