DGVCL Exam Paper (12-06-2016)
For a 66 kV line having span of 200 meters between towers the approximate sag will be 2 m. If the span is double the sag will be:
In step up votlage, Output votlage > Input votlage Output current < Input current
In step down transformer Output votlage < Input votlage Output current > Input current. Power and frequency remains almost constant in stepup or stepdown transformer.
EXAMIANS