awais (awaispk)

Race #2849

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Official speed 76.85 wpm (44.19 seconds elapsed during race)
Race Start November 2, 2020 11:07:54am UTC
Race Finish November 2, 2020 11:08:38am UTC
Outcome Win (1 of 5)
Opponents 2. alekva (49.99 wpm)
Accuracy 98.0%
Points 57.64
Text #4060102 (Length: 283 characters)

Transformers and most electric motors operate on alternating current. In such devices the flux in the iron changes continuously both in value and direction. The magnetic domains are therefore oriented first in one direction, then the other, at a rate that depends upon the frequency.