Willoughby, George Alonzo, 1894- · Peoria, Ill. : Manual Arts Press · leaf 25
ts (Fig. 6). If, however,high voltages and large quantities arerequired, a small power plant must beinstalled or the power must be pur-chased from a central power station. 11. Brief Description of the DryCell.—Since the dry cell is one of themost common sources of small electrical pressures, it is… … Fig. 6. Two of thecommon methods ofsupplying electricalpressures—the dry celland the storage battery. ELECTRICAL PRESSURES 21 sulphuric acid was placed in a glass tumbler and a strip ofzinc and a strip of copper suspended in it, an electric currentwould flow from the copper to the zinc if they were…
Electricity · Electrical engineering
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