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+//Example 6.11// current per phase and power factor
+clc;
+clear;
+close;
+format('v',6)
+v1=100;//emf in volts
+vi=v1/sqrt(3);//induced emf in volts
+r1=1;//rotor resistance ohms per phase
+r2=4;//rotor reactance ohms per phase
+r=sqrt(r1^2+r2^2);//rotor impedence per phase
+rcp=(vi/r);//rotor current per phase
+pf=(1/r);//power factor
+disp("part (a)")
+disp(rcp,"rotor current per phase is,(A)=")
+disp(pf,"power factor is,=")
+r3=3;//ohms
+r4=r1+r3;//rotor resistance ohms per phase
+r2=4;//rotor reactance ohms per phase
+r=sqrt(r4^2+r2^2);//rotor impedence per phase
+rcp=(vi/r);//rotor current per phase
+pf=(r4/r);//power factor
+disp("part (b)")
+disp(rcp,"rotor current per phase is,(A)=")
+disp(pf,"power factor is,=")
+