M

Mr. Dubey • 52.30K Points
Coach

Q. Which of the following inert gas is used with DC power supply only?

(A) argon
(B) helium
(C) co2
(D) nitrogen
Correct : Option (C)

Explanation:
 co2 is used only in dc power supply. it cannot be used in ac power supply. argon and helium can be used with ac supply.

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