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Diffstat (limited to '3681/CH3/EX3.7')
| -rw-r--r-- | 3681/CH3/EX3.7/Ans3_7.PNG | bin | 0 -> 5386 bytes | |||
| -rw-r--r-- | 3681/CH3/EX3.7/Ex3_7.sce | 20 |
2 files changed, 20 insertions, 0 deletions
diff --git a/3681/CH3/EX3.7/Ans3_7.PNG b/3681/CH3/EX3.7/Ans3_7.PNG Binary files differnew file mode 100644 index 000000000..b7866a133 --- /dev/null +++ b/3681/CH3/EX3.7/Ans3_7.PNG diff --git a/3681/CH3/EX3.7/Ex3_7.sce b/3681/CH3/EX3.7/Ex3_7.sce new file mode 100644 index 000000000..e16269b3d --- /dev/null +++ b/3681/CH3/EX3.7/Ex3_7.sce @@ -0,0 +1,20 @@ +// Calculating the apparent flux density
+clc;
+disp('Example 3.7, Page No. = 3.22')
+// Given Data
+Ws = 10;// Slot width in mm
+Wt = 12;// Tooth width in mm
+L = .32;// Grass core Length in meter
+nd = 4;// Number of ventilating ducts
+Wd = 10;// Width of each ventilating Duct in mm
+Breal = 2.2;// Real flux density in Wb per meter square
+p = 31.4*10^(-6);// Permeability of teeth corresponding to real flux density in henry per meter
+Ki = 0.9;// Stacking Factor
+// Calculation of apparent flux density
+at = Breal/p;// mmf per meter corresponding to real flux density and permeability
+Li = Ki*(L-nd*Wd*10^(-3));// Net iron length
+ys = Wt+Ws;// Slot pitch
+Ks = L*ys/(Li*Wt);
+Bapp = Breal+4*%pi*10^(-7)*at*(Ks-1);
+disp(Bapp,'Apparent flux density(Wb per meter square)=');
+//in book answer is 2.317 Wb per meter square. The answers vary due to round off error
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