A 130-hp, three-phase, wye-connected, 50-Hz, 440-V, four-pole, cylindrical-rotor synchronous motor is operating at rated conditions and 86 percent power-factor leading. The efficiency, excluding field and stator losses, is 90 percent, and the synchronous reactance is 2.13 Ohms/phase. Determine the pull-out torque of the motor in lb-ft. Give your final answer in 2 decimal places.
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Give your final answers in at least 2 decimal places - make it 3 or 4 decimal places whenever required in the problem. If you are doing a step by step calculation, maintain 6 decimal places in your in-between calculations to hit good accuracy in your final answers. Use 1 hp = 746 Watts in your conversion whenever necessary.
A 130-hp, three-phase, wye-connected, 50-Hz, 440-V, four-pole, cylindrical-rotor synchronous motor is operating at rated conditions and 86 percent power-factor leading. The efficiency, excluding field and stator losses, is 90 percent, and the synchronous reactance is 2.13 Ohms/phase. Determine the pull-out torque of the motor in lb-ft. Give your final answer in 2 decimal places.
Correct Answer: 885.36 ± 0.01
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