Electricians' operating and testing manual; a hand book for men in charge of electrical apparatus, repair men, trouble men, lamp trimmers, and electricians generally (1916)
Horstmann, Henry Charles, Tousley, Victor Hugo, 1875- joint author · Chicago, F.J. Drake & co · leaf 176
of cells. 172 Operating and Testing The resistance of a number of cells in parallel isequal to the total resistance of one of the series groupsdivided by the number of sets in parallel. Primary batteries are divided into two classes; oneof these is suitable for continuous work only, and willrapidly… … Figure 121 sists of copper located at the bottom of the jar asshown in Figure 121, and the negative of zinc ar-ranged at the top, as shown. Both of the elementsare immersed in a solution of sulphate of copper com-monly spoken of as blue stone. This type is suit-able only for such work as…
Electrical engineering · Electric testing
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