The contacts of high voltage switches used in power system are submerged in oil. The main purpose of the oil is to______________?

The contacts of high voltage switches used in power system are submerged in oil. The main purpose of the oil is to______________?

(A) lubricate the contacts

(B) insulate the contacts from switch body

(C) extinguish the arc

(D) all of the above

(E) none of the above

Submitted By :Ali Uppal

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