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SF6 insulated load switch grids gas Analysis electronic weighing device

300+ TOP Switchgear & Protection Objective Questions Answers SF6 gas (a) is yellow in colour (b) is lighter than air (c) is nontoxic (d) has pungent small (e) none of the above Ans: c. 4. The arcing contacts in a circuit breaker are made of (a) copper tungsten alloy (b) porcelain (c) electrolytic copper (d) aluminium alloy Ans: a. 5. Which of the following medium is employed for extinction of arc in ...

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