Pressure of gas in a single pressure puffer type circuit breaker

Q.  What is the pressure of  SF6 gas in a single pressure puffer type SF6 circuit breaker?
- Published on 28 Sep 15

a. 2 – 4 kg / cm2
b. 4 – 6 kg / cm2
c. 6 – 8 kg / cm2
d. 8 – 10 kg / cm2

ANSWER: 4 – 6 kg / cm2

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