DGVCL Exam Paper (11-12-2011)
If a 5 A fuse is blown frequently in a house lighting circuit, it is required to

Insert a fuse of higher current rating
Check the load
Reduce the load
Insert a fuse of higher voltage rating

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DGVCL Exam Paper (11-12-2011)
Distribution transformers have good all day efficiency due to

Low iron loss
Low copper as well as iron loss
Low voltage
Low copper loss

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

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

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