Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics (1892)
Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 248
clearance necessary for rotation beingthe only gap in the magnetic circuit) that the expenditureof energy on the field-magnets is very small, being less than1-,% per cent of the total when the niachine is fully loaded.This nnist be conceded to be a remarkably good result whenthe slow speed of the… … Fig. 76.—Connectors. NUMBER OF TEST. Speed of annatnre, 1revolutions per minute.- Volt.. Amp4re«. Efficiency, pei cent. 1 .556-6 1 547-a 540-3 5.59-2 581-4 5050-151-54551 134-40136-94138-.59253-82271-34 84-1 2 3 84-583-9 4 86-3 .5 86 The base of the machine is .31 X 31 in., and it stands 26 in.…
Mechanical engineering
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