Julien (amaimon43)

Race #3929

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Official speed 65.49 wpm (62.12 seconds elapsed during race)
Race Start December 4, 2019 11:18:42am UTC
Race Finish December 4, 2019 11:19:44am UTC
Outcome No win (2 of 5)
Accuracy 97.0%
Points 63.30
Text #4060101 (Length: 339 characters)

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.