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+// chapter 2
+// example 2.11
+// Fig. E2.11
+// Calculate shortest fault clearance time
+// page-54-55
+clear;
+clc;
+// given
+Vm=120; // in V (sinosoidal ac supply)
+integration=15; // in a^2.s (integral of square of current)
+// calculate
+t=integration/Vm^2; // calculation of fault clearance time
+t=t*1E3; // changing unit from s to ms
+printf("\n\nThe fault clearance time is \t= %.2f ms",t);
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