Philip (plip_1021)

Race #418

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Official speed 54.59 wpm (74.52 seconds elapsed during race)
Race Start September 18, 2020 2:26:41am UTC
Race Finish September 18, 2020 2:27:55am UTC
Outcome No win (2 of 4)
Accuracy 95.0%
Points 52.77
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.