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| author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
|---|---|---|
| committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
| commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
| tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /3760/CH6/EX6.59/Ex6_59.sce | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
| download | Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.gz Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.bz2 Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.zip | |
initial commit / add all books
Diffstat (limited to '3760/CH6/EX6.59/Ex6_59.sce')
| -rw-r--r-- | 3760/CH6/EX6.59/Ex6_59.sce | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/3760/CH6/EX6.59/Ex6_59.sce b/3760/CH6/EX6.59/Ex6_59.sce new file mode 100644 index 000000000..7490c790b --- /dev/null +++ b/3760/CH6/EX6.59/Ex6_59.sce @@ -0,0 +1,14 @@ +clc;
+z=1.2+3*%i; // per phase standstill impedance
+v=400; // supply voltage
+l=500; // length of feeder line
+tr=30; // maximum percentage reduction possible in starting torque
+ro=0.02; // resistivity of feeder material
+// equating expression of starting torque with and without feeder we get a quadratic equation in R (feeder resistance) whose terms are
+t1=(1-(tr/100));
+t2=2*real(z)*t1;
+t3=t1*abs(z)^2-abs(z)^2;
+p=[ t1 t2 t3 ];
+R=roots(p);
+A=(ro*l)/R(2);
+printf('Minimum allowable cross section is %f mm^2',A);
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