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## Homework Statement

A three phase cage rotor induction motor running at full load draws a stator current of 60A at a power factor of 0.8 lagging from a 415v, 50Hz Supply. Under the conditions the stator loss is 3.6kW, the rotor loss is 1.3kw and percentage slip is 4.5%. If the shaft power output is 29.4kW, calculate the shaft output torque, efficiency & mechanical friction and windage loss.

## Homework Equations

Torque = Force * distance

## The Attempt at a Solution

At first i tried using the power output 29.4kw to try to work out the torque but then realised that its not used for force.

Now unfortunately this is were I'm stuck at, I really need help on this and I can't get my head around the question. I am uncertain of what formulas to use and would really appreciate it if someone could guide me and tell me which ones to use .