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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /2273/CH6/EX6.15/ex6_15.sce | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '2273/CH6/EX6.15/ex6_15.sce')
| -rwxr-xr-x | 2273/CH6/EX6.15/ex6_15.sce | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/2273/CH6/EX6.15/ex6_15.sce b/2273/CH6/EX6.15/ex6_15.sce new file mode 100755 index 000000000..e06a771f1 --- /dev/null +++ b/2273/CH6/EX6.15/ex6_15.sce @@ -0,0 +1,31 @@ +//Determine the induced voltage in the telephone line
+clear;
+clc;
+
+//soltion
+//given
+Vl=132*1000;//Volt
+P=28*10^6;//load in kw
+pf=0.85;//power factor
+f=50;//Hz
+l=200;//length of the line
+r=0.005;//radius of conductor
+hA=20;//height of the line
+Ao=4*sqrt(3)/2;
+dAP=Ao+5;
+dAQ=dAP+1;;
+dBP=sqrt(5*5+2*2);
+dBQ=sqrt(6*6+2*2);
+Ma=0.2*log(dAQ/dAP);
+Mb=0.2*log(dBQ/dBP);
+M=(Mb-Ma)*10^-3;
+I=P/(sqrt(3)*Vl*pf);
+Vm=2*%pi*f*M*I;
+printf("For 200 km line induced voltage= %.1f volts\n",Vm*l);
+Va=Vl/sqrt(3);
+Vb=Va;
+Vpa=Va*log((2*(hA+Ao)-dAP)/dAP)/log((2*(hA+Ao)-r)/r);
+Vpb=Vb*log((2*(hA+Ao)-dBP)/dBP)/log((2*(hA+Ao)-r)/r);
+Vp=Vpb-Vpa;
+printf("The potential of telephone line= %d volts",Vp);
+//the ans in the book is Vm= 90.4 volts and Vp=4396 because of using round off in some values
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