Guest
Race Result Details |
| Racer | Rebecca (rgilbert15) |
| Race Number | 9 |
| Date | Tue, 6 Aug 2019 18:24:44 |
| Speed |
57 WPM
 Try to beat?
|
| Accuracy | 95% |
| Rank | 5th place (out of 6) |
| Opponents | carlilessard (4th place) karojones (1st place) satishjha (6th place) yonni (2nd place) yzheng (3rd place) |
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)
|