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

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

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

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

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DGVCL Exam Paper (11-12-2011)
The purpose of interpoles in DC machines is to nullify

Both the cross-magnetizing mmf and the reactance voltage
The reactance voltage
The demagnetizing effect of armature mmf
The cross-magnetizing effect of armature mmf

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