Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 127
per cent, in 3hours due to this cause. The series motor is the best for heavy starting duty because, forany torque greater than the full-load value, it takes a smallercurrent from the line than either the shunt or the compoundmachine. The speed of the series motor decreases rapidly withincrease of… … Armature Current Armature Current Fig. 124.—Characteristic curves of direct current motors. the series motor. It is better than the shunt motor for. heavystarting duty but not so good as the series motor. The speeddrops somewhat with the load but the motor runs at a safe maxi-mum speed even at…
Electrical engineering
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