what happen when ac motor is connected with dc current
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Answer / anthony
1)motor won't run since the ac motors operate on
distributed winding principle in which there is a continous
shift of magnetic priority in space and since dc is not
having any phase sequence , it won't run at all .
2) the problem with dc is that the value of dc current is
always constant . hence the I*2 R losses(Watts)continue to
remain constantly at the same value and when multipied by
the time "t" , would give us a heat liberated of (I*2* R*t)
joules whch wil continue to build up with time for a
constant load drawn . this will cause burning of the
winding.
Is This Answer Correct ? | 24 Yes | 0 No |
Answer / moody
it will not run becas the angle of rotor flux and stator
flux is not constant ....... no torque for running
stationary flux will not induced the armature also
and the heat losses will burn the winding
Is This Answer Correct ? | 4 Yes | 1 No |
Answer / vikas tomar(from s.d.e.c. ghaz
The AC motor will not run when it is supplied by dc.
beacause as we know by the principle of electromagnetic induction that the emf will induse only when the flux changes w.r.t. time (i.e. when flux is alternating)e=d#/dt.Hence when dc is given,the flux produced would not be alternating,so no emf indused,no torque production,no motor revolution.
thanks.......................
with regards
VIKAS TOMAR.
Is This Answer Correct ? | 1 Yes | 0 No |
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