Electrical installations of electric light, power, traction and industrial electrical machinery (1902)
Kennedy, Rankin, d. 1917 · Edinburgh T.C. & E.C. Jack · leaf 84
Fig. 75 Fig. 76 Fig. 77 in the coils will proportionally vary the pull, and its strength couldbe calculated if we could find the number of convolutions and theirampere-turn? cut by the flux of 2000 lines ; but this is difficult tofind, as the flux spreads out in curves. There is, of course, a…
Electrical engineering · Electric power
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