4. If the voltage rises to 110 per cent, then the
torque increases to 121 per cent of its rated
value

5. For example, a 10 kW motor with a 10 per cent
voltage variation should now be rated at 8.1
kW or 12.1 kW.

7. For example, the increased torque reduces the
slip only slightly, so a motor rotating at 1450 r/
min on 50 Hz would increase its speed to
approximately 1455 r/min.