Electrical machinery; a practical study course on installation, operation and maintenance (1921)
Annett, Fred Anzley · New York [etc.] McGraw-Hill book company · leaf 57
series incorrectly. 42, 47 and 48 is only capable of producing 25 lb. pressure.To produce 50 lb. pressure, two pumps would have to beconnected in series, as shown in Fig. 51. In this case pump 10 ELECTRICAL MACHINERY A would deliver the Avater to pump B at 25 lb., whereB would again increase the… … Fig. 51.—Pump analogy of two battery cells connected in series. produced by one is added to that of the other and is knownas a two-stage or three-stage pump. To obtain more than four volts, more cells Avill have tobe connected in series. For example, in Fig. 52, four cellsare connected in series…
Electric machinery
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