Engine_2014 : Electricity - 707/2299
|
|---|
| « Previous Question |
| By what means is the burning of controller contacts due to arcing, when opening, prevented? |
| A) coating the contact surfaces lightly with petroleum jelly |
| B) magnetic blowout coils |
| C) an overvoltage release |
| D) an overcurrent release |
loading answer...
| Comments |
|---|
| There are no comments for this question. |