McqMate
| Q. |
What is the major drawback of using SF6 circuit breakers? |
| A. | Sealing problems of the gas. |
| B. | Ingress of moisture in the gas system – dangerous. |
| C. | Deterioration of SF6 gas with time. |
| D. | Both (a) and (b) |
| Answer» D. Both (a) and (b) | |
758
1
Do you find this helpful?
2
View all MCQs in
Testing and Commissioning of Electrical Equipment’sDiscussion
Kiran Dutta
2 years ago
How
0
Related MCQs
- What is / are the main disadvantage / s of using oil as the quenching medium in the circuit breakers?
- What is the most important property which makes the SF6 very efficient medium for circuit breaking?
- Circuit breakers usually operate under
- Circuit breakers are essentially
- The current zero interruption, in oil and air blast circuit breakers, is achieved by
- The time of closing the cycle, in modern circuit breakers is
- Insulation resistance of high voltage circuit breakers is more than
- Which of the following circuit breakers has high reliability and minimum maintenance ?
- Air blast circuit breakers for 400 kV power system are designed to operate in
- Which of the following circuit breakers is used for the railway electrification?