Electrical Engineering · Switchgear and Protection
Current zero interruption in oil and air blast circuit breakers is primarily achieved by which of the following mechanisms?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Both cooling and blast effect, and lengthening of the gap✓
- 2Lengthening of the gap only
- 3Deionizing the oil with forced air
- 4Cooling and blast effect only
Correct answer
Both cooling and blast effect, and lengthening of the gap
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