Mathematics · Numerical Aptitude
A 3-phase, 440 V, 50 Hz, 4-pole star connected cylindrical rotor synchronous motor has synchronous impedance (Zs) of j2 Ω. The speed of the motor is controlled by keeping V/f constant and unity pf by field control of the motor. The load torque is 330 Nm at rated speed. Calculate the load torque when the motor operates at 600 rpm.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1200 Nm
- 2300 Nm
- 3150 Nm
- 4132 Nm✓
Correct answer
132 Nm
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