How Do You Calculate Torque and RPM in a 3-Pole Pair Synchronous Motor?

[Marketgirl]

Homework Statement

a synchronous motor has ;
pole pairs =3
line frequency = 50hy
mechanical power P=1200W

Homework Equations

The Attempt at a Solution

the questions are
angular velocity of the rotary magnetic field = (i solved this one)
number of rotations 1/min units = ?
the torque of the motor =?


thank you from now

 

[NascentOxygen]

Hi Marketgirl. You are required to show some working before you can be assisted in these forums.

The notation (i solved this one) [/color] in lieu of any working does not earn credit in examinations, nor does it here, unfortunately.