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Diffstat (limited to '3681/CH9/EX9.27')
| -rw-r--r-- | 3681/CH9/EX9.27/Ans9_27.PNG | bin | 0 -> 8485 bytes | |||
| -rw-r--r-- | 3681/CH9/EX9.27/Ex9_27.sce | 15 |
2 files changed, 15 insertions, 0 deletions
diff --git a/3681/CH9/EX9.27/Ans9_27.PNG b/3681/CH9/EX9.27/Ans9_27.PNG Binary files differnew file mode 100644 index 000000000..561ca6b7b --- /dev/null +++ b/3681/CH9/EX9.27/Ans9_27.PNG diff --git a/3681/CH9/EX9.27/Ex9_27.sce b/3681/CH9/EX9.27/Ex9_27.sce new file mode 100644 index 000000000..ecdb0aa81 --- /dev/null +++ b/3681/CH9/EX9.27/Ex9_27.sce @@ -0,0 +1,15 @@ +// Calculating the reactance voltage for a machine with straight line and sinusoidal commutation
+clc;
+disp('Example 9.27, Page No. = 9.86')
+// Given Data
+Ns = 60;// Number of segments
+rev = 10;// Number of revolution per second
+W = 1.5;// Brush width in segments
+L = 0.2;// Co-efficient of self-induction (in mH)
+I = 20;// Current per coil
+// Calculation of the reactance voltage for a machine with straight line and sinusoidal commutation
+Tc = W/(Ns*rev);// Time of commutation
+Erav = L*10^(-3)*2*I/Tc;// Average reactance voltage
+disp(Erav,'Reactance voltage with straight line commutation (Volts)=');
+disp(%pi/2*Erav,'Reactance voltage with sinusoidal commutation (Volts)=');
+//in book answers are 3.2 Volts and 5 Volts respectively. The answers vary due to round off error
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