GETCO Exam Paper (30-11-2008)
If the +Ve, -Ve & zero sequence reactances of an elements of a power system are 0.3, 0.3 & 0.8 p.u. respectively, the element would be

transmission line
static load
synchronous motor
synchronous generator

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GETCO Exam Paper (30-11-2008)
A buchholz will operate in a transformer whenever there is

any of the above
over load
large internal fault
saturation of magnetic circuit

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