McqMate
| Q. |
What is / are the main disadvantage / s of using oil as the quenching medium in the circuit breakers? |
| A. | Need periodical replacement. |
| B. | Risk of formation of explosive mixture with air. |
| C. | Possibility of causing fire hazards. |
| D. | All of the above. |
| Answer» D. All of the above. | |
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