A $460$ V$,60$ Hz$,$ four$$pole induction motor is wye$$connected$.$ The core losses are

lumped together with the friction and windage losses and the stray losses to give

the total rotational losses of $1100$ W and they are assumed to be constant. The

impedances per phase referred to the stator circuit are:

For a rotor slip of $2\mathrm{.}2\%$ at the rated voltage and rated frequency, find the motor$$s

$6$

a$)$ Speed

b$)$ Input stator current

c$)$ Input power factor

d$)$ Pconv and Pout

e$)$ Tind and Tload

f$)$ Efficiency