DGVCL Exam Paper (11-12-2011)
The form factor in AC means the ration of

R.M.S. value to peak value
R.M.S. value to average value
Peak value to average value
Peak value to r.m.s value

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

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

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

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

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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's power factor is higher
It has a higher efficiency

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