Answer / prmdptl2009

if an AC induction motor is applied with DC voltage,then due
to unavailability of change in flux as in AC,the induction
will not be possible. also in case of dc supply the motor
winding will not be able to withstand for long time and at
last the motor winding will be damaged.

Answer / suresh

if v give AC supply to motor it produce (RMF) rotating
magnetic field & according to principle it will run..
but in DC it will produce (SMF)static magnetic field due to
this the rotor cannot run & stater winding gets heated & burn..

why neutral can not used in three phase motor connection?

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