Mathematics · Electrical Machines
A three-phase induction motor is wound for 3 poles (or rather, consider a standard even pole machine, typically 2, 4, etc. However, solving strictly with the given numbers where Ns = 120f / P, if P = 3 poles, Ns = 120 × 50 / 3 = 2000 rpm). Find the rotor speed when the slip is 4%.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 12000 rpm
- 21920 rpm✓
- 32220 rpm
- 41220 rpm
Correct answer
1920 rpm
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