Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 135
T 90 ,250 160 Fig. 131.—Multiple volt-age system. … Motor Generator Set Adjustable SpeedMotor Fig. 132.—Ward Leonard svstem. adjustable speed motor, the set consisting of a high-speed gener-ator G direct connected to a motor M. To obtain slow speeds, the field excitation of G is reduced soas to reduce the voltage Eg which is applied to the motor…
Electrical engineering
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