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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 /1892/CH1/EX1.19 | |
| 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 '1892/CH1/EX1.19')
| -rwxr-xr-x | 1892/CH1/EX1.19/Example1_19.sce | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/1892/CH1/EX1.19/Example1_19.sce b/1892/CH1/EX1.19/Example1_19.sce new file mode 100755 index 000000000..2d1fa6157 --- /dev/null +++ b/1892/CH1/EX1.19/Example1_19.sce @@ -0,0 +1,33 @@ +// Example 1.19
+
+clear; clc; close;
+format('v',8);
+// Given data
+P=4;//in poles
+Pout=37;//in HP
+f=50;//in Hz
+N=1425;//in rpm
+MechLoss=3;//in HP
+StatorLoss=2500;//in watts
+VL=500;//in volt
+cosfi=0.9;//power factor
+
+//Calculations
+Ns=120*f/P;//in rpm
+S=(Ns-N)/Ns;//slip
+disp(S,"(i) Slip is : ");
+Pout=Pout*735.5;//in Watts
+MechLoss=MechLoss*735.5;//in Watts
+Pin=Pout+MechLoss;//in Watts
+//Formula : P2:Pc:Pin=1:5:1-S
+Pc=(S/(1-S))*Pin;//in watts
+disp(Pc,"(ii) Rotor Cu Loss in watts : ");
+P2=Pc/S;//in Watts
+Pin=P2+StatorLoss;//in watts
+disp(Pin,"(iii) Total power input in watts : ");
+Eta=Pout/Pin*100;//in %
+disp(Eta,"(iv) Efficiency in % : ");
+fr=S*f;//in Hz
+fr=fr*60;//in cycles/min
+disp(fr,"(v) No. of cycles per minute : ");
+//Part (ii) & (iii) answer is wrong in the book.
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