Induction Motor, Parameter Test

• Engineering

Homework Statement

I just gave an exam where one of the questions was where I had to find the various parameters using the two forms of tests for an Induction motor:

Locked rotor.

Now, I can do this question but there is one thing that is confusing me. I had to find the stator core loss resistance, Rc. I was given the input power (450W) and I was also given the windage losses (300W).

Homework Equations

To find Rm, I use P = V^2/Rm

I am confused about whether I should use the input power or input power + windage losses?

I think it should be input power as it includes the windage losses anyway, no?

Here is the circuit:

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