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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 /2252/CH18/EX18.4 | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
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diff --git a/2252/CH18/EX18.4/Ex18_4.jpeg b/2252/CH18/EX18.4/Ex18_4.jpeg Binary files differnew file mode 100755 index 000000000..77da17518 --- /dev/null +++ b/2252/CH18/EX18.4/Ex18_4.jpeg diff --git a/2252/CH18/EX18.4/Ex18_4.sce b/2252/CH18/EX18.4/Ex18_4.sce new file mode 100755 index 000000000..12f47052d --- /dev/null +++ b/2252/CH18/EX18.4/Ex18_4.sce @@ -0,0 +1,19 @@ +
+//generated emf is directly proportional to speed
+//readings for OCC at 1000 rpm are
+Eg2=[10*(1000/800) 112*(1000/800) 198*(1000/800) 232*(1000/800) 252*(1000/800) 266*(1000/800)]
+i=linspace(0,5,6)
+plot2d(i,Eg2)
+xtitle("Magnetization curve for example 18.4","Field current","Generated emf")
+
+//refer Fig.18.7 in the textbook
+Rsh=70//resistance of field circuit
+//line OA is field resistance line
+V=330//voltage corresponding to point A
+mprintf("No load terminal voltage is %d V\n",V)
+//now, no load terminal voltage is 270 V
+V=270
+//the operating point is D
+//line OD is corresponding field resistance line
+R=V/2.4//resistance represented by line OD
+mprintf("Additional resistance required in the field circuit to reduce the voltage to 270 V=%f ohm\n",R-Rsh)
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