The practical testing of dynamos and motors (1905)
Smith, Charles Frederick, 1873- · Manchester Scientific Pub. Co · leaf 250
diminishthe voltage across the armature. Adjust the shuntresistance Rj until the armature voltage attains itsprevious value, and again take readings on the instruments. Take a series of readings in this way, keeping thearmature voltage constant throughout. About four sets of readings should be… … Fig. 75. M, M., Supply mains. M Motor armature. F Field winding. R, R, Variable resistances A, A, Ammeters. V Voltmeter. s Switch. The results should be entered as shown in Table I.below, and curves of (a) field current and (6) armatureinput watts should be plotted on a base of revolutionsper…
Dynamos · Electric motors
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