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

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

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

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

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