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

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

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

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

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DGVCL Exam Paper (11-12-2011)
Hysteresis in an instrument means

The change in the same reading when the input is first increased and then decreased
The inaccuracy due to change in temperature
The reliability of the instrument
The repeatability of the instrument

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