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diff --git a/1055/CH15/EX15.2/ch15_2.sce b/1055/CH15/EX15.2/ch15_2.sce
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+// To determine the rate of rise of restriking voltage
+clear 
+clc;
+Vnl=132*sqrt(2)/sqrt(3);//peak value of peak to neutral voltage(kV)
+Vr1=Vnl*.95;//recovery voltage (kV)
+Vr=102.4*.916;// active recovery voltage(kV)
+Vrmax=2*Vr;
+fn=16*(10^3);
+t=1/(2*fn);
+RRRV=Vrmax*(10^-6)/t;
+mprintf("rate of rise of restriking voltage, RRRV=%.0f kV/micro-sec",RRRV);