DGVCL Exam Paper (11-12-2011)
The transient stability of a power system can be improved by

Single pole switching of circuit breakers
Phase shifting transformer
Excitation control
Increasing the turbine valve opening

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

The inaccuracy due to change in temperature
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

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