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Question:

Can an AC motor run off of DC of the same voltage, without modification?

If it won't work, why won't it?..Have you tried it before?

Answer:

Yes, if it was a universal motor. Your question made me read through this:
dc automobiles have brushes that contact the rotor your motor is ac dc gained't move in the course of a cap and there must be no reason to apply a dc motor off residing house ac potential, it must be wasteful and the rectifier is larger and the motor prices extra
Their working principles are different. If you connect an AC motor to DC supply it will simply burn off. The resistance of an AC motor is very low and if you connect it to DC huge current will flow through it's coils. In AC the coil impedance will reduce the current flow. But certain designs like a home mixer can work in DC also.
The general answer is no, with a few exceptions. AC motors are made to take advantage of the alternating current to produce rotation. With DC, they will just lock in place. This includes most household fans, refrigerators, and air conditioners. An exception would be any motor that has brushes in it, such as an electric drill. However, this kind of motor has lower impedance at DC, so 115 volts AC would be replaced by maybe 80 volts DC for the same power. No one, least of all the manufacturer, will guarantee that it will work, but it does. Another exception is something that has a DC motor in it, but is actually rectifying the AC first to get DC. Examples of that would be a travel hair dryer, or the kind of air conditioner that advertises DC inverter inside.
No. And in most cases, AC motors are much higher voltage than most people have available in DC - how would I test a 120 volt AC motor on 120 volt DC if all I have available is 12 VDC? But while there are some AC/DC motors, most AC motors work at commuting the power - changing the magnetic poles with time - using the phase changes of the AC - which is the reason that 60 cycle AC motors run slow on 50 cycle power. DC motors almost all have commutators - divided sections so that as the DC power is applied and rotation starts, at just the right rotation the magnetic field is changed to pull the rotor further around. Since AC motors lack this mechanical feature, on DC they just sit there.

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