kewl (hyper_racer)

Race #40517

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Official speed 152.12 wpm (26.74 seconds elapsed during race)
Race Start September 27, 2020 4:58:07pm UTC
Race Finish September 27, 2020 4:58:34pm UTC
Outcome No win (1 of 1)
Accuracy 99.0%
Points 147.05
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.