Guest
Race Result Details |
| Racer | (pholadiformis) |
| Race Number | 47 |
| Date | Thu, 29 Oct 2020 22:46:38 |
| Speed |
123 WPM
 Try to beat?
|
| Accuracy | 99.3% |
| Rank | 1st place (out of 4) |
Text typed:
|
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)
|