DGVCL Exam Paper (11-12-2011)
It is difficult interrupt a capacitive current because

Stored energy in the capacitor is very high
Current magnitude is very small
The restriking voltage can be high
It has a leading power factor

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DGVCL Exam Paper (11-12-2011)
Buchholz relay causes

Tripping for both major and minor faults
Alarm for both major and minor faults
Tripping for minor faults and alarm for major faults
Tripping for major faults and alarm for minor faults

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