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Racer seized (heehoca)
Race Number 921
Date Fri, 17 Apr 2020 15:28:59 +0000
Speed 75 WPM Try to beat?
Accuracy 96.8%
Rank 2nd place (out of 5)
Opponents edward54321 (1st place) protino (5th place)

Text typed:

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.
Electrical Machines, Drives, and Power Systems (book) by Theodore Wildi (see stats)

Typing Review: