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 - Threshin Demonstration - by Michael Delaney. Introduction I bring you greetings from Prince Edward Island, Canada. We are Canada�s smallest province but big on farming. Maybe you�ve heard of us. Potatoes are our biggest crop. However, there is lots of mixed farming here also. I have a small mixed farm with 25-30 cattle. I make very good use of old machinery. I have a 135 MF Diesel, Farmall H and 1/3 share in an Allis B. I have complete lines of tillage and harvest equipment, and a saw gear etc. I have everything one would
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