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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
A permanent-magnet dc motor has RA = 7 Ω, VT = 240 V, and operates under no load conditions at a speed of 1500 rpm with IA = 1 A. A load is connected and the speed drops to 1300 rpm. Determine the efficiency of the motor under loaded conditions. Assume that the losses consist solely of heating of RA and frictional loss torque that is independent of speed.
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