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 359
l show in a measure the results to beexpected by careful selection and placing of the transformers. The firstcurve, Fig. 13, shows the relative cost per lamp or unit of transformers ofdifferent capacity, showing how much cheaper large ones are than small s. fe2 o I > 1 H 3 V -~. c 1 0 2 0 3.1 0… … 0 100 200 300 400 Fig. 13. Relative Efficiency of Large and Small Transformers. COMMERCIAL TRANSFORMERS. 347 Power JFactor is the ratio of the actual watts in a line to the voltamperes or apparent Avatts in that line. It is also defined as the cosine ofthe angle of phase displacement of the current…
Electrical engineering
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