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Diffstat (limited to '3681/CH3/EX3.12')
| -rw-r--r-- | 3681/CH3/EX3.12/Ans3_12.PNG | bin | 0 -> 6485 bytes | |||
| -rw-r--r-- | 3681/CH3/EX3.12/Ex3_12.sce | 21 |
2 files changed, 21 insertions, 0 deletions
diff --git a/3681/CH3/EX3.12/Ans3_12.PNG b/3681/CH3/EX3.12/Ans3_12.PNG Binary files differnew file mode 100644 index 000000000..6e5250863 --- /dev/null +++ b/3681/CH3/EX3.12/Ans3_12.PNG diff --git a/3681/CH3/EX3.12/Ex3_12.sce b/3681/CH3/EX3.12/Ex3_12.sce new file mode 100644 index 000000000..8d64df9fa --- /dev/null +++ b/3681/CH3/EX3.12/Ex3_12.sce @@ -0,0 +1,21 @@ +// Calculating the specific iron loss
+clc;
+disp('Example 3.12, Page No. = 3.35')
+// Given Data
+Bm = 1.0;// Maximum flux density in Wb per meter square
+f = 100;// Frequency in Hz
+t = 0.3*10^(-3);// Thickness of sheet in mm
+p = .5*10^(-6);// Resistivity of alloy steel in ohm*meter
+D = 7650;// Density in kg per meter cube
+pi_quoted = 1.2;// Quoted iron loss in W per Kg
+// Calculation of total iron loss
+S1 = 2*12;// Sides of hysteresis loop in A/m
+S2 = 2*1;// Sides of hysteresis loop in Wb per meter square
+A = S1*S2;// Area of hysteresis loop in W-s per meter cube
+ph_each = A;// Hysteresis loss in each cycle in Joule per meter cube
+ph = ph_each*f/D;// Hysterseis loss in W per Kg
+pe = %pi*%pi*f*f*Bm*Bm*t*t/(6*p*D);// Eddy current loss in W per Kg
+pi = pe+ph;// Total iron loss in W per Kg
+disp(pi,'Specific iron loss(W per Kg)=');
+disp('The calculated iron loss is smaller than the quoted.')
+//in book answer is 1.014 W per Kg. The answers vary due to round off error
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