Question

QUESTION 8 The speed-torque characteristic of an induction motor has been empirically determined as follows: Speed 147 440 41 1.3001.100 Torque 3 Speed 900 750 350 rev/min Torque 13 11 75 N-m 6 9 15 13 The motor will drive a load requiring a starting torque of 7 N-m and increase linearly with speed to 13 N-m at 1,500 rev/min. Find the steady-state operating point of the motor. Enter the one best answer (as a number without the units) from the following choices: 1375 rpm1394 rpm1412 rpm 1431 rpm1451 rpm 1470 rpm1490 rpm

Answer 1

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2. 干 3 o at

20 15 10 5 slip 0!5 1