Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 349
rticular oil is specified they will seldom send the sametwice. The laboratory of the National Board of Fire Underwriters has useda number of different kinds in its high-testing transformers (40,000 volts),and has never found any difference in results although ordered as statedabove. Heating- and… … Fig. 3. G. E. Co. Type H Transformer —20000 watts, oil-cooled. In a transformer, the capacity for work increases directly as the volumeof material, densities and proportions remaining constant. The volume,however, increases as the cube of the dimensions, and the radiating surfaceas the square of…
Electrical engineering
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