DGVCL Exam Paper (11-12-2011)
An IDMT relay provides

A definite time cuttent characteristic
An inverse time current characteristic
A definite time characteristic for low values of the failt current and an inverse characteristic for high values of the fault current
An inverse characteristic for low values of the fault current and a definite time characteristic for high values of the fault current

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

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

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