A 6-pole hysteresis motor runs on 60 Hz supply. Calculate synchronous speed.

Option 1: 1000 rpm

Option 2: 1200 rpm

Option 3: 1500 rpm

Option 4: 1800 rpm

---

Correct Option: 2

Explanation

Using Ns = 120f / P, for f = 60 Hz and P = 6, synchronous speed is 1200 rpm.