Electrical installations of electric light, power, traction and industrial electrical machinery (1902)
Kennedy, Rankin, d. 1917 · Edinburgh T.C. & E.C. Jack · leaf 108
mpere-turns by expanding the poles. Such a device for the purpose of saving ampere-turns is notalways beneficial. It certainly is not in dynamos and motors, for the field is weakenedper square inch, and the magnetic metal of the extended poles formmagnetic circuits of their own with the armature… … Fig. iio Magnetic Saturation In Table VIII. it will be noted that while when B = 5 theampere-turns required are 4.85; when B=io, ampere-turns equal9.7, just proportional ; but when B = 15, the ampere-turns equal t^j,so that by increasing ampere-turns from 9.7 to t^j.t, we have onlyincreased B from…
Electrical engineering · Electric power
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