In an induction motor $$r'_2$$ is the rotor resistance. What is the resistance representing mechanical output in the equivalent circuit of an induction motor as referred to stator side?

A

$$r'_2\left(\frac{1}{s} - 1\right)$$

B

$$\frac{r_2^2}{s}$$

C

$$r_2^2\left(\frac{1}{s} - 1\right)$$

D

$$\frac{r'_2}{s}$$