On which of the following routine tests are conducted ?
Correct answer: D. All of the above
- A. Oil circuit breakers
- B. Air blast circuit breakers
- C. Minimum oil circuit breakers
- D. All of the above
Explanation
Routine tests such as insulation, mechanical operation and timing checks are performed on oil, air-blast and minimum-oil circuit breakers. Hence, all the listed breaker types are included.
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