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Racer Sarah (joonby)
Race Number 1013
Date Thu, 17 Sep 2020 21:38:00 +0000
Speed 81 WPM Try to beat?
Accuracy 98.6%
Rank 2nd place (out of 5)
Opponents rushil17chawla (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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