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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/CH23/EX23.5 | |
| 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 '2252/CH23/EX23.5')
| -rwxr-xr-x | 2252/CH23/EX23.5/Ex23_5.sce | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/2252/CH23/EX23.5/Ex23_5.sce b/2252/CH23/EX23.5/Ex23_5.sce new file mode 100755 index 000000000..25f8dde56 --- /dev/null +++ b/2252/CH23/EX23.5/Ex23_5.sce @@ -0,0 +1,27 @@ +
+//calculating rotor starting current per phase on normal voltage with slip ring short-circuited
+V=400//voltage applied to the stator winding
+V1=V/sqrt(3)//phase voltage
+k=2.5//transformation ratio
+R2=.02//rotor resistance per phase
+//at standstill
+s=1//slip
+E2=V1/k//induced phase voltage in the rotor winding
+X2=2*%pi*50*.6D-3//rotor reactance per phase
+Z2=sqrt(R2^2+X2^2)
+I2=E2/Z2
+mprintf("Rotor starting current per phase on normal voltage with slip ring short-circuited=%f A\n",I2)
+//calculating rotor power factor at starting
+pf=R2/Z2
+mprintf("Rotor power factor at starting=%f\n",pf)
+//calculating rotor current per phase at 3 % slip
+s=.03//slip
+E2=s*E2
+X2=s*X2
+Z2=sqrt(R2^2+X2^2)
+I2=E2/Z2
+mprintf("Rotor current per phase at 3 percent slip=%f A\n",I2)
+//calculating rotor power factor at 3% slip
+pf=R2/Z2
+mprintf("Rotor power factor at 3 percent slip=%f",pf)
+//answers vary from the textbook due to round off error
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