1 files changed, 28 insertions, 0 deletions
diff --git a/3784/CH7/EX7.1/Ex7_1.sce b/3784/CH7/EX7.1/Ex7_1.sce
new file mode 100644
index 000000000..e361813e2
--- /dev/null
+++ b/3784/CH7/EX7.1/Ex7_1.sce
@@ -0,0 +1,28 @@
+clc 
+//variable initialization
+V=440 //voltage in volts
+P=6 //number of poles
+f=50 //frequency in Hz
+R=0.3 //rotor resistance in ohm
+X=1 //leakage reactance in ohm
+s=0.03 //slip
+N=800 //speed in rpm
+K=2.2 //stator to rotor ratio
+
+//solution
+Ns=(120*f)/6
+w=(2*%pi/60)*Ns
+Tf=(3/w)*((V^(2))*(R/s))*(1/(((R/s)^(2))+(X^(2))))
+k=Tf/((Ns*(1-s))^(2))
+Tl=k*(N^(2))
+s1=((Ns-N)/Ns)
+Re=(X^(2))*(s*Tl*w)*(1/(3*(V^(2))-(Tl*w)))
+X1=14.78
+X2=0.07
+Ree=(X1*0.2)-0.3
+Ree1=(X2*0.2)-0.3
+//since negative value of resistance is not feasible
+Ree=2.656
+//Rotor -referred value of external resistance
+Rex=Ree/K^(2)
+printf('\n\n The Resistance to be inserted in rotor circuit=%0.1f ohm\n\n',Rex)