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

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

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DGVCL Exam Paper (11-12-2011)
The corona effect can be minimized by increasing

Spacing between the conductors
The length of the conductor
Both spacing between the conductors and diameter of the conductor
Diameter of the conductor

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