heartbeats (jack777)

Race #30215

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Official speed 96.48 wpm (42.16 seconds elapsed during race)
Race Start December 18, 2018 10:16:26am UTC
Race Finish December 18, 2018 10:17:08am UTC
Outcome Win (1 of 5)
Opponents 2. giftedotter (91.69 wpm)
3. knightpikachu (87.91 wpm)
4. thosbp (86.79 wpm)
5. oneguardsam (77.22 wpm)
Accuracy 99.0%
Points 93.27
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.