Question: 1 3 - 4 / 1 . A 4 0 - h p , three - phase, 6 0 - H z , 4 6

13-4/1. A 40-hp, three-phase, 60-Hz,460-V,3530-rpm, design B motor is used to drive a centrifugal pump. The locked-rotor torque of the motor is 126lb-ft. The pump requires a minimufn starting torque of 65lb-ft. However, for adequate acceleration the locked-rotor torque must be at least 75lb-ft. Determine the minimum voltage that would provide satisfactory acceleration.
1 3 - 4 / 1 . A 4 0 - h p , three - phase, 6 0 -

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