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Racer Kevin (xen_0xis)
Race Number 257
Date Wed, 15 Apr 2020 02:57:14 +0000
Speed 48 WPM Try to beat?
Accuracy 92.8%
Rank 3rd place (out of 4)
Opponents a_dog_6929 (2nd place) smilyu (1st 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: