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| Q. |
What is the normal pressure at which the SF6 gas is maintained in the closed position of the breaker? |
| A. | 2 kg / cm2 |
| B. | 2.5 kg /cm2 |
| C. | 2.8 kg / cm2 |
| D. | 3 kg / cm2 |
| Answer» C. 2.8 kg / cm2 | |
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