Mahedi (12362)

Race #8700

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Official speed 80.08 wpm (50.80 seconds elapsed during race)
Race Start December 12, 2020 4:47:34pm UTC
Race Finish December 12, 2020 4:48:25pm UTC
Outcome Win (1 of 5)
Opponents 2. boinkey (72.00 wpm)
4. fangian (56.30 wpm)
Accuracy 99.0%
Points 77.41
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.