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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/CH1/EX1.78 | |
| 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/CH1/EX1.78')
| -rw-r--r-- | 3760/CH1/EX1.78/Ex1_78.sce | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/3760/CH1/EX1.78/Ex1_78.sce b/3760/CH1/EX1.78/Ex1_78.sce new file mode 100644 index 000000000..2790b26cb --- /dev/null +++ b/3760/CH1/EX1.78/Ex1_78.sce @@ -0,0 +1,15 @@ +clc;
+P=100000; // rated VA of transformer
+n=0.98; // maximum possible efficiency
+l=80000; // rated KVA of load
+vrm=0.04; // maximum possible voltage regulation is equal to ze2 in p u
+pf=0.8; // power factor at which efficiency anf voltage regulation has to be determined
+pl=((1/n)-1)*l; // total losses in transformer
+pc=pl/2; // core losses; at maximum efficiency ohmic losses = core losses
+po=(1/pf)^2*pc; // ohmic losses at given power factor
+N=(P*pf*100)/(l+po+pc);
+printf('Efficiency at %f lagging power factor is %f percent\n',pf,N);
+re2=po/P; // resistance in p u
+xe2=sqrt(vrm^2-re2^2);
+vr=(re2*pf+xe2*sqrt(1-pf^2))*100;
+printf('Voltage regulation at %f lagging power factor is %f percent',pf,vr);
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