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

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

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DGVCL Exam Paper (11-12-2011)
A fuse wire should have

High specific resistance and low melting point
High specific resistance and high melting point
Low specific resistance and low melting point
Low specific resistance and high melting point

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