The Theory, Design and Working of Alternate-current Motors

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The Inst., 1898 - 130 pages
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Page 23 - Class 4.—Inductive motors without brushes, having shortcircuited coils, and two reciprocal inductive electric and magnetic axes. As this class of motor is the most important and widely used, its properties and functions may be more fully considered. An idealized motor, Fig. 40, will first be considered, where A, B are
Page 63 - Regulations made by the Board of Trade . . . for regulating the employment of insulated returns, or of uninsulated metallic returns of low resistance ; . . .
Page 24 - X sin 6 . . . (8) where 6 is the angle between the plane of the coil and the magnetic axis. The average value of the virtual electromotive force
Page 63 - that the maximum fall of potential shall not exceed 7 volts, and to allow for overlapping of loads, such as is liable to occur in a system of twenty-five cars, it was assumed that the maximum would exceed the average by 50 per cent., and that the average fall in the earth

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