Dynamo electric machinery; its design, construction, and operation; direct-current machines (1915)
Sheldon, Samuel, 1862-1920, Hausmann, Erich, 1886- joint author · New York, D. Van Nostrand Company; · leaf 110
-A … FIELD MAGNETS. 99 sider that it occupies io% of the gross length of iron.The presence of ventilating ducts further decreases thenet iron length. The cross-sectional area of the armaturecore is Ac = (14 - 1.2) X 0.9 (15 - 4 X 0.5) = 150 sq. in. In multipolar machines of the usual construction…
Electric machinery
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