Easy electrical experiments and how to make them; (1918)
Dickinson, Leonard Perley, 1874- [from old catalog] · Chicago, F. J. Drake & co · leaf 146
est we cango with safety. Knowing these two things, it is easy to cal-culate the size of our armature. If we multiply the speed atwhich the conductors move (30), by 12, and divide the productby 3.14 and again by the number of revolutions per second (40),the result will be the diameter sought. In… … 132 EASY ELECTRICAL EXPERIMENTS. is the average diameter of the armature, measured to the centerof the conductors. The outside of the armature should be alittle larger than this. To use even figures, let us assume theoutside diameter of our armature to be 3 inches. In the design of armatures for…
Electric apparatus and appliances · Electricity
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