diff options
Diffstat (limited to '2273/CH9/EX9.9/ex9_9.sce')
| -rwxr-xr-x | 2273/CH9/EX9.9/ex9_9.sce | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/2273/CH9/EX9.9/ex9_9.sce b/2273/CH9/EX9.9/ex9_9.sce new file mode 100755 index 000000000..21b96ec4c --- /dev/null +++ b/2273/CH9/EX9.9/ex9_9.sce @@ -0,0 +1,19 @@ +//find radial thickness and safe working voltage of cable
+clear;
+clc;
+//soltion
+//given
+d=6;//cm
+D=18;//cm
+e1=5;//realtive permeabilty
+e2=4;//realtive permeabilty
+g1max=30;//kV/cm
+g2max=20;//kV/cm
+d1=g1max*e1*d/(g2max*e2);
+tin=(d1-d)/2;
+printf("Radial thickness of inner dielectric= %.3f cm \n",tin);
+tout=(D-d1)/2;
+printf("Radial thickness of outer dielectric= %.3f cm \n",tout);
+Vper=(g1max/2)*[d*log(d1/d)]+(g2max/2)*(d1*log(D/d1));
+Vsafe=Vper/sqrt(2);
+printf("Safe working voltage for a cable(rms)= %.2f kV\n",Vsafe);
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