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Racer Charles (iam1egend)
Race Number 152
Date Thu, 20 Aug 2020 00:00:21 +0000
Speed 66 WPM Try to beat?
Accuracy 96.4%
Rank 2nd place (out of 5)
Opponents wille747 (3rd 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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