In order to do an apples-to-apples comparison, you'll need a means to measure both speed and torque (i.e. a dynamometer). For the ac motor you'll also need a means to measure the phase angle, such as a phase angle voltmeter or oscilloscope. Simply hooking up the motors to some load and measuring their current draw won't tell you anything about their comparative efficiency.
I guess I don't understand the need for household circuit breakers and switches rated for DC.
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Today's Featured Article - Good As New - by Bill Goodwin. In the summer of 1995, my father, Russ Goodwin, and I acquired the 1945 Farmall B that my grandfather used as an overseer on a farm in Waynesboro, Georgia. After my grandfather’s death in 1955, J.P. Rollins, son of the landowner, used the tractor. In the winter 1985, while in his possession the engine block cracked and was unrepairable. He had told my father
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