The practical testing of dynamos and motors (1905)
Smith, Charles Frederick, 1873- · Manchester Scientific Pub. Co · leaf 198
nnections. Connect the field windings of the second machineseparately to the mains, and connect a voltmeter to thearmature terminals. tin the arrangement described below the power lost in the machines issupplied from the mains. In some cases it is more convenient to use a batteryor small auxiliary… … Fig. 57.—Efficiexcv oi- Two Sijiilar Machines (.oupled TO^etiiku. Mj M, Supply mains. D Armature of machine running as generator. M Armature of machine running as motor. Fj Fj Field windings of the two machines. R Variable resistance for weakening motor field. Aj Ammeter indicating output of…
Dynamos · Electric motors
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