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 96
Fig. 50. … Fig. 51. ARMATURES. 85 where Ds is the shaft diameter in inches, and /^ is a con-stant having the following values for different-sized machinesusing mild-steel shafts : 50 K.W. or less, k = 6.5 50 K.W. to 500 K.W., k = 8.4 500 K.W. and over, k = 10.2 This shaft diameter refers to that part under…
Electric machinery
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