Answer Posted / khushboo

in ac current flows in both cycle means synosoidal.but in
dc direct current flows which is hazadous.dc current is
harmful from safety point of view if it has to be used for
domestic purpose.for example if leakage current flows from
some applicance and if it is caught by human and if it is
dc than one can not not get rid of it as flow of current is
direct but if it is AC than one can get rid of it after
completion of cycle as it is alternate current so it is
less harmfull.

v/f drive basic princeple

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