GETCO Exam Paper (30-11-2008)
If a power system is transiently stable, it

is always dynamically stable
will oscillate beyond the first swing
may be dynamically unstable
both (a) & (c )

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GETCO Exam Paper (30-11-2008)
The function of a breather in a transformer is

to control the level of oil in the tank
to provide protection against over currents
to arrest flow of moisture into the tank
to suppress harmonics

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