Engine : Electricity - 280/1386 |
---|
« Previous Question |
What should be included in performing proper maintenance of a D.C. motor's commutator? |
A) painting the face of the commutator with insulating varnish |
B) baking the armature in an oven at 350°C for 8 hours annually |
C) coating the copper surface with light machine oil for the first four hours of operation |
D) side-cutting the copper segments and undercutting the mica |
loading answer...
Comments |
---|
There are no comments for this question. |