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Diffstat (limited to '3760/CH1/EX1.20/Ex1_20.sce')
| -rw-r--r-- | 3760/CH1/EX1.20/Ex1_20.sce | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/3760/CH1/EX1.20/Ex1_20.sce b/3760/CH1/EX1.20/Ex1_20.sce new file mode 100644 index 000000000..cb94ee7f0 --- /dev/null +++ b/3760/CH1/EX1.20/Ex1_20.sce @@ -0,0 +1,20 @@ +clc;
+P=10000; // rated power of transformer in VA
+E1=2000; // full load primary voltage
+E2=400; // full load secondary voltage
+k=E2/E1; // turns ratio
+pf=0.8; // lagging power factor
+// initialising results of short circuit test
+v=60; // voltage applied for short circuit test
+i=4; // short circuit current
+p=100; // power dissipated in short circuit;
+reh=p/i^2; // total resistance referred to h v side
+zeh=v/i; // total impedance referred to h v side
+xeh=sqrt(zeh^2-reh^2); // total leakage reactance referred to h v side
+rel=reh*k^2; // resistance referred to l v side
+xel=xeh*k^2; // reactance referred to l v side
+i2l=P/E2; // full load secondary current
+vr=i2l*(rel*pf+xel*sqrt(1-pf^2)); // voltage regulation
+v2=E2+vr; // total voltage of secondary when transformer is operating on full load
+v1=v2/k; // voltage applied to primary to deliver full load
+printf('voltage applied to primary to deliver full load is %f v',v1);
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