Practical electricity .. with questions and answers (1911)
Cleveland armature works, [from old catalog] comp, Lincoln, John C. [from old catalog] · [Cleveland, Ohio, Cleveland armature works] · leaf 16
candescemt lamp is aboutYo ampere. The current required by a street arc lamp isfrom ten to six amperes, depending on the brilliancy of thelight. The current used in a land telegraph wire is .003 to.005 amperes. The resistance of 1,000 feet of copper wireone-tenth of an inch in diameter is one ohm.… … Figure 2System for distributing hot water at constant pressure. Suppose Fig. 2 to be part of the heating* system of abuilding. The pump takes in the water fromthe low pressure pipe, and after passing*through a heater it is forced out into thehigh pressure pipe to the radiators over the building.…
Electricity
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