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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.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoBasically, not much.
The AC motor will start to turn, then stop.
This is because AC motors are designed to create a magnetic field, that starts the armature rotating.
Then the polarity switches, moving the magnetic field ahead so the armature follows it.
DC power obviously doesn't reverse polarity so the armature catches up to the field and stops.
I should mention there are different types of AC motor, and my description doesn't cover all types.
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What is AC motor and DC motor?
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