Practical applied electricity; a book in plain English, for the practical man. Theory, practical applications and examples (1911)
Moreton, David Penn, 1882- · Chicago, The Reilly & Britton co · leaf 214
mag-netizing effect counteracts that of the armature current andthe position of the brushes need not be changed with thechange in load on the machine. If the direction of rotation ofthe armature be changed by changing the direction of thearmature current, the polarity of the interpoles will also… … Fig. 164 armature is connected to an auxiliary generator (G), whosevoltage can be regulated by means of the field rheostat (R),Fig. 164. In this arrangement the speed of the motor (M) iscontrolled by a change in impressed voltage, which in turnis controlled by the excitation of the generator (G).…
Electrical engineering
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