Does a 1 HP motor draw more wattage than an AC one at the same EMF?
1 HP is 746 watts. It doesn't matter if it is a 120vac motor or a 240vac motor. A 120vac motor will draw 2x the current than a 240vac motor to develop the same HP. A 1 HP, 120v DC motor still draws 746 watts. But a DC motor can't run on AC power, nor can and AC motor run on DC power without some sort of inverter or converter. The matter of efficiency is something else. Some of that power used to develop 1 HP is lost to friction or heat.
