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why do mostly prefer to generate and distribute electricity in 3 phase..not in 4 phase or 5 phase.??
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Answer Posted / rakesh
We need min 3 ac phases to produce an alternately rotating , self-starting, magnetic field which is basic need to produce EMF and hence generation of power. And for 360 total electrical degree ,there we have 3 , 120 apart degree electrical phase. so no 2 phase production popular, now same may be achived by 4phase 5 phase system , but it needs as many slip rings,coil's, insulation to produce as well as converters,cross arm long increased to convert and transmit
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