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Racer Chris (chgr5)
Race Number 90
Date Mon, 16 Mar 2020 15:54:03 +0000
Speed 45 WPM Try to beat?
Accuracy 92.7%
Rank 4th place (out of 5)
Opponents siarnt (2nd place) yand2211 (1st 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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