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Answer Posted / sunil guru
Air gap is only useful when the gap is in standard value...
if the air gap increases (is more than the m/c
specification)..
then it creates the losses like iron loss,stray load
loss,friction and windage losses...
also the reluctance and blunging (commonly known as fringing
of flux) increases.... and results in reducing the efficency
of machine...
good air gap helps to create the flux,circulating current and
finally the torque.....(here the flux is totally used)..
(less losses)
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