DGVCL Exam Paper (11-12-2011)
In carrier current protection, the purpose of the wave trap is for

Trapping power frequency waves
All of these
Trapping high frequency waves entering into generator/transformer unit.
Tripping fault current

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

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

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