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Diffstat (limited to '3871/CH10/EX10.13/Ex10_13.sce')
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diff --git a/3871/CH10/EX10.13/Ex10_13.sce b/3871/CH10/EX10.13/Ex10_13.sce new file mode 100644 index 000000000..4e69c8d3f --- /dev/null +++ b/3871/CH10/EX10.13/Ex10_13.sce @@ -0,0 +1,24 @@ +//===========================================================================
+//chapter 10 example 13
+clc;
+clear all;
+
+//variable declaration
+P = 1000; //resistance in arm AB in Ω
+Q = 100; //resistance in arm BC in Ω
+R = 200; //resistance in arm BD in Ω
+Si1 = 10; //sensitivity
+Si2 = 5; //sensitivity
+Rg1 =400;
+Rg2 =100;
+
+//calculations
+S = R*Q/P; //resistance required in arm CD in Ω
+Rth = ((R*S/(R+S))+(P*Q/(P+Q))); //thevenin's equivalent resistance of bridge in Ω
+//theta = (Si*E*S*dR)/((R+S)^2)*(Rth+Rg1))
+//theta2/theta1 = (Si*E*S*dR)/((R+S)^2)*(Rth+Rg1))*(((R+S)^2)*(Rth+Rg1)/(Si*E*S*dR))
+r = (Si2/Si1)*((Rth+Rg1)/(Rth+Rg2)); //ratio deflection of two galvanometer
+
+//result
+mprintf("ratio deflection of two galvanometer = %3.3f Ω",r);
+mprintf("\nthe first galvanometer (internal resistance 400 Ω and sensitivity 10 mm/uA) is less sensitive to a small unbalance on the given bridge ,through on its own it is more sensitive than the other galavanometer")
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