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Racer Edward (edward54321)
Race Number 7802
Date Fri, 17 Apr 2020 15:28:58 +0000
Speed 76 WPM Try to beat?
Accuracy 97.8%
Rank 1st place (out of 5)
Opponents heehoca (2nd place) protino (5th 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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