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 54
with which it turns depends upon the load; it must always turnslower than the magnet, in order that its elements may cut magnetic lines and inducepoles to produce the necessary torque to balance the load. The difference in speed ofthe magnet and cylinder is called the slip. Evidentlv the greater… … magnetic lines offorce inducing a cur-rent therein, whosedirection is easilydetermined by ap-plying Flemingsrule. Since the field isnot uniform, butgradually weakens,as shown, on eitherside of the shadedarea (which is justpassing the cen:the pressure inducedon either side willbe less than…
Electrical engineering
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