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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/EX23.20 | |
| 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/EX23.20')
| -rwxr-xr-x | 2252/CH23/EX23.20/Ex23_20.sce | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/2252/CH23/EX23.20/Ex23_20.sce b/2252/CH23/EX23.20/Ex23_20.sce new file mode 100755 index 000000000..c6224e7e5 --- /dev/null +++ b/2252/CH23/EX23.20/Ex23_20.sce @@ -0,0 +1,18 @@ +
+V=400//phase voltage applied to motor
+//when started directly on line
+Iph=25//phase current
+Il=sqrt(3)*Iph
+mprintf("Line current drawn by the motor when started directly on line=%f A\n",Il)
+//when started with auto-transformer starter with a tapping percent of 60 percent
+Vl=.6*V//line voltage
+Vph=Vl//phase voltage
+Iph=25//phase current
+Ist=Iph*Vph/V
+Il=sqrt(3)*Ist
+mprintf("When started with auto-transformer starter with a tapping of 60 percent\nPhase starting current =%f A\nLine starting current=%f A\n",Ist,Il)
+//when started with star-delta starter
+Vph=V/sqrt(3)//phase voltage
+I=Iph*Vph/V
+Il=I
+mprintf("When started with star-delta starter\nPhase starting current =%f A\nLine starting current=%f A",I,Il)
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