Atkinson, Albert Algernon, 1867- [from old catalog] · New York, D. Van Nostrand company · leaf 166
section to carry 3 long tons. Specify allvalues for the construction of the magnet of Norway iron,taking a current of 5 amperes. • The answers in this and the next problem cover allowance for air gap. RELATION OF MAGNETIC QUANTITIES. 145 Area = 22.4 sq. in., cross section.Length = 32 inches = 80… … 24. Find the length and the resistance of the wire inthe last problem if allowance be made for the reluctance.of the contact area. Also determine the depth of wire ifthe same space be allowed as before. nl = 2490 ; n = 498. L = 763 ft.; R = 2.2 ohms. Wire is No. 14 B. & S. 25. Give the design…
Electricity
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