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

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DGVCL Exam Paper (11-12-2011)
A Mho relay is a

Voltage controlled over current relay
Directional restrained over current relay
Voltage restrained directional relay
Directional restrained over voltage relay

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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 is suitable for higher speeds
It can be started with the help of rotor resistances

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DGVCL Exam Paper (11-12-2011)
The purpose of skewing of rotor slots in an induction motor is

To reduce the locking tendency of the rotor
To reduce the magnetic hum of the motor
To increase the breadth factor
To increase the distributuion factor

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