A DC motor, when supplied from a 199 V power supply is observed to rotate under no-load conditions at 1,780 rpm. A stall test shows that the winding resistance is 1.87 Q. The motor is connected to a...

Extracted text: A DC motor, when supplied from a 199 V power supply is observed to rotate under no-load conditions at 1,780 rpm. A stall test shows that the winding resistance is 1.87 Q. The motor is connected to a load whose torque-speed characteristic is given by T = wX 0.138. Find the speed (in rpm) at which the motor will drive this load. 数字 rpm (Give your answer in rpm to 3 s.f.)