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Racer Fa (farid72)
Race Number 142
Date Fri, 15 Nov 2019 17:26:08 +0000
Speed 81 WPM Try to beat?
Accuracy 96.3%
Rank 4th place (out of 5)
Opponents noamaster88 (1st place) s255 (2nd place) thievuz (3rd place) waleedbinkhalid (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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