Guest
Race Result Details |
| Racer | Md. Ibrahim Khalil (ibrahim1018) |
| Race Number | 3030 |
| Date | Sat, 18 Apr 2020 10:20:14 |
| Speed |
85 WPM
 Try to beat?
|
| Accuracy | 98% |
| Rank | 1st place (out of 5) |
| Opponents | jere169 (5th place) |
Text typed:
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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.
— (book)
by Theodore Wildi
(see stats)
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