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 400
e way in which the inductors are distrib-uted over the surface of the armature. Besides these fac-tors, it is necessary to consider the shape and length of the airgap, the relative strength of field magnets and armature wind-ing, the power factor of the load, and the method of connectingthe phases… … Fig. 248. — Actual voltage curve at no load. 150 kv-a. and 60 cycles. 249. Efficiency of alternators. The efficiency of any machinemeans the ratio of the power delivered by the machine to thopower received by it. Efficiency = <^timt.Input In the case of a large alternator it is generally…
Electricity · Magnetism
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