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Racer monica (lakers201716)
Race Number 328
Date Sat, 29 Dec 2018 01:32:12 +0000
Speed 51 WPM Try to beat?
Accuracy 97.8%
Rank 4th place (out of 4)
Opponents urgency (2nd place)

Text typed:

A train equipped with, say, two dc motors, is started with both motors connected in series to an external resistor. As the speed picks up, the resistor is shorted out. The motors are then paralleled and connected in series with another resistor. Finally, the last resistor is shorted out, as the train reaches its nominal torque and speed.
Electrical Machines, Drives, and Power Systems (book) by Theodore Wildi (see stats)

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