what will happen when ac wil supply to an dc motor?
No matter what happens you won't end up in Washington, DC. However, I've found speaking English is a huge plus on YA so - I'll ask this just once, HUH? You can't supply AC power to a DC motor without a transformer. Most DC motors operate on or around 12 volts and AC in the US is 110V so it will literally burn up in a second.
