1.After synchronising the alternator to the grid,how we r
delivering power to the grid?if the i/p increases does the
speed hence frequency increases?
2.y the power factor is changing when exitation changes?what
is the relation with p.f and flux?
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Answer Posted / mm
real power delivered per phase=VE*(p.f).when excitation is
increased without increasing input to prime mover the real
power remain constant.as per the above equation as
excitation changes pf has to change correspondingly to
maintain real power constant
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