DGVCL Exam Paper (11-12-2011)
All the peripheral devices connected to a computer require power to work. Which of the following voltages is required for the motherboard to work?

AC
Positive cycle of sine wave
DC
Negative cycle of sine wave

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

Directional restrained over current relay
Voltage restrained directional relay
Directional restrained over voltage relay
Voltage controlled over current 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 is suitable for higher speeds
It can be started with the help of rotor resistances
It has a higher efficiency
It's power factor is higher

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DGVCL Exam Paper (11-12-2011)
Two parallel conductors are carrying the current in the same direction. Which of the following statements is correct?

There is a repelling force between the conductors
There is an attracting force between the conductors
The force increases when the distance between the conductors is decreased
The force increases when the distance between the conductors is increased

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