sohta (sohta)

Race #147

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Official speed 68.06 wpm (59.77 seconds elapsed during race)
Race Start July 16, 2020 8:29:08am UTC
Race Finish July 16, 2020 8:30:08am UTC
Outcome No win (2 of 3)
Accuracy 99.0%
Points 65.79
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.