doodle2552 (doodle2552)

Race #7322

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Official speed 99.86 wpm (40.74 seconds elapsed during race)
Race Start June 22, 2019 4:43:06pm UTC
Race Finish June 22, 2019 4:43:47pm UTC
Outcome Win (1 of 4)
Opponents 2. bogyi (75.07 wpm)
4. seminyoon1 (65.03 wpm)
Accuracy 100.0%
Points 96.53
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.