Atkinson, Albert Algernon, 1867- [from old catalog] · New York, D. Van Nostrand company · leaf 202
are steel. Form shown in Fig. 18. Armature: Length (for flux), /= 20 cm. Area, A = 10 X 30 = 300 sq. cm. 3 X io6Induction, Ba = *- 300 2 Reluctivity, k = 5000 gausses.0.0001 1 — 0.000059 X 5000 = 0.00014 oersted percc. 20 Reluctance, (R = 0.00014 X 300 = 0.0000093 oersted. CALCULATION OF FIELDS.… … Fig. 18. /fc&r : M.M.F. = 3 X IO x 0.0155 = 23,250 gilberts.nl = 23,250 -r- 1.256 = 18,500 amp.-turns.Length, / = 16 cm. Area, A = — X 30 = 129 sq. cm. Induction, B = 3 X io< X 1.3-5- 129 = 15,120 gausses. 182 ELECTRICAL AND MAGNETIC CALCULATIONS. Reluctivity, k = ^2 i —0.000051 x 15,120 =…
Electricity
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