Steve (feedthejoe)

Race #5465

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Official speed 77.64 wpm (43.74 seconds elapsed during race)
Race Start March 25, 2019 6:01:43pm UTC
Race Finish March 25, 2019 6:02:26pm UTC
Outcome No win (2 of 5)
Opponents 3. ashishsawale (74.69 wpm)
4. mustela (54.05 wpm)
Accuracy 97.0%
Points 58.23
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.