Interruption of large currents by relay requires______________?
Correct answer: D. all of the above
- A. arc suppressing blow out coils
- B. wide separation of the opened contacts
- C. high speed opening of contacts
- D. all of the above
Explanation
Large-current interruption requires rapid contact separation, sufficient contact gap, and arc-control devices such as blowout coils. These measures work together to extinguish the arc and prevent it from restriking.
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