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

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DGVCL Exam Paper (11-12-2011)
Due to skin effect

Uniform current flows through the conductor
Portion of the conductor near the surface carries less current and the core of the conductor carries more current
Current flows through the half cross section of the conductor
Portion of the conductor near the surface carries more current and the core of the conductor carries less current

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DGVCL Exam Paper (11-12-2011)
The advantage of slipring induction motor over the squirrel cage induction motor is

It's power factor is higher
It has a higher efficiency
It can be started with the help of rotor resistances
It is suitable for higher speeds

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