A $380-$volts $3-$phase $50$ Hz $4-$pole SCIM motor has per$-$phase equivalent$-$circuit

parameters as follows:

Stator resistance R$1=0\mathrm{.}2$ Rotor resistance R$2=0\mathrm{.}12$ Motor mutual reactance Xm $=100$

Stator reactance X$1=0\mathrm{.}3$

Rotor reactance X$2=0\mathrm{.}24$

$($a$)$ Calculate the stator current and internal induced torque when the motor is full$-$

loaded with a slip of $0\mathrm{.}05.$

$($b$)$ Recalculate the stator current and internal induced torque when the motor is at

starting.

$($c$)$ Make comments on the results of $($a$)$ and $($b$)$ above.