GETCO Exam Paper (30-11-2008)
Steady - state stability limit of a power system means that the system is capable of maintaining

the frequency at 50 Hz exactly
synchronism between machines and on external tie lines
All of these
a constant power flow throughout

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

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

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