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Diffstat (limited to '3871/CH5/EX5.16')
| -rw-r--r-- | 3871/CH5/EX5.16/Ex5_16.sce | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/3871/CH5/EX5.16/Ex5_16.sce b/3871/CH5/EX5.16/Ex5_16.sce new file mode 100644 index 000000000..1a9867903 --- /dev/null +++ b/3871/CH5/EX5.16/Ex5_16.sce @@ -0,0 +1,37 @@ +//===========================================================================
+//chapter 5 example 16
+
+clc;clear all;
+
+//variable declaration
+theta = 90; //full-deflection in °
+Td = 0.4*10^-4; //full-scale deflecting torque in Nm
+I = 0.05; //current in A
+M = 0.25; //initial inductance in H
+V = 50; //voltage in V
+I = 0.05; //current in A
+f =50; //frequency in Hz
+V2 = 25;
+R = 1000;
+
+
+//calculations
+//dM/dtheta = x
+x = (Td/(I^2)); //change in inductance in H
+dM = (Td/(I^2))*((theta*%pi)/(180)); //change in inductance in H
+M1 = M+dM; //total mutual inductance in H
+R = V/(I); //the resistance of voltmeter in Ω
+Z =sqrt((R**2)+((2*%pi*f*M1)**2)); //toatal impedance in Ω
+V1 = (V/(Z))*R; //voltmeter reading in V
+d = V-V1; //difference in reading in V
+I1 = V2/(R); //current through instrument in A
+theta1 = ((theta*%pi)/(180))*((I1/(I))^2); //defelction
+M2 = M+(x*theta1); //total mutual inductance in H
+Z1 = sqrt((R**2)+((2*%pi*f*M2)**2)); //toatal impedance in Ω
+V21 = (V2*R)/(Z1); //voltmeter reading in V
+d1 = V2-V21; //difference in voltmeter reading in V
+
+//result
+mprintf("impedancewhile measuring the voltage = %3.3f Ω",Z1);
+mprintf("\ndifference in reading = %3.1f V",d);
+mprintf("\ndifference in reading when 25v is used = %3.2f V",d1);
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