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Racer spectating a spectator (mporsche02)
Race Number 2276
Date Fri, 22 Feb 2019 23:27:16 +0000
Speed 176 WPM Try to beat?
Accuracy 99.1%
Rank 1st place (out of 3)
Opponents kayak1 (3rd place) yzzahs (2nd 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: