Electrical installations of electric light, power, traction and industrial electrical machinery (1902)
Kennedy, Rankin, d. 1917 · Edinburgh T.C. & E.C. Jack · leaf 48
Fig. 2^ Fig. 34 Resistance Frames, with five Spiral Resistance Coils bare wire about 6 yards long, fix on a board having eleven bindingscrews and ten brass hooks, as in Fig. 35 ; m^ake it zigzag from oneto the other, passing through the eyes of the binding screws andover the hooks tightly drawn in.…
Electrical engineering · Electric power
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