Answer / selvakumar.t

When generator breaker opened at full load. Subsequently the
generator prime mover will go to over speed.We can use place
the breaker between generator and transformer through bus
bar. Because transformer was transmitting the power only.

Answer / e.subhash

Not necessary, because generator is synchronising hence we need bus only.

Answer / pallab phukon

when a generator is disconnected from supply when it is
running at full speed,there will be mechanical vibration in
the rotor and may even break.so,if a generator should be
disconnected,we have to at first reduce the load.

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