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 246
eight of the machinebeing 685 kilogrammes. The electrical elliciency of the machine is 972 per cent, accordingto the above data, which is an unusually higli figure, and its commercial efficiency is alsohigh. The macliinc was specially designed for the transmission of power where small weightand… … Fig. 72.—Wenstrom dynamo. that two exciting coils are sufficient, the iV-poles being energized direct, and the two consequent6^-poles by induction. The brushes are placed at an angle of 90° on tlie commutator. Usually the space between the magnet-polos and core of the armature must be sufficientnot…
Mechanical engineering
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