Te/fr*1.34=Rr ;
Rr*(1/(0.75*4))=Wslip
Te=electromagnetic torque
fr=rotor flux
Rr=rotor resistance
no. of poles=4
Wslip=slip speed of induction motor
Stator speed ws is proportional to stator current and can be written as (2/3) Rr. and rotor slip speed wslip =(2/p) ws. =( 2/p). (2/3). Rr= Rr.(4/3)/ p = Rr / (.75x4) is the second equation.
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