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 240
of toughened brass insulated with mica. Itis usual in these machines so to shape the pole-pieces that there is a smaller clearance oppo-site the highest and lowest points of the armature; this concentrates the magnetic field, andhelps to prevent its distortion by the armature-current. In a 24-unit… … Jy di naiiiu. 222 DYXAMO-ELECTRIC MACHINES. •013 ohm. With a speed of 1.050 revolutions per minute the current was 220 amperes, themachine being nearly self-regulating for 111 volts. This machine is known as the Man-chester dynamo. Its efficiency is 909 per cent.
Mechanical engineering
Internet Archive · Boston Library Consortium · Public Domain Mark 1.0. Free to use for anything.
