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if dc motor can operate by ac supply ? if its possible
means how ?
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Answer Posted / rahul ganthade
It depends on whether the field winding of the dc motor is
connected in series or in shunt with the armature
winding.If it is connected in series,the motor will rotate
since the torque,which varies as the product of the
armature and field current is always positive.Thus,a
positive average torque causes the motor to rotate,however
the pulsating nature may cause the commutator segments and
brushes to wear out.
Thus only small sized dc motors may be used with ac supply.
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