JB (jb420)

Race #54

View Pit Stop page for race #54 by jb420Ghost race

View profile for JB (jb420)

Official speed 65.78 wpm (61.84 seconds elapsed during race)
Race Start July 31, 2020 12:30:57am UTC
Race Finish July 31, 2020 12:31:58am UTC
Outcome Win (1 of 5)
Accuracy 96.0%
Points 63.59
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.