11 files changed, 103 insertions, 0 deletions
diff --git a/1376/CH3/EX3.1/3_1.sci b/1376/CH3/EX3.1/3_1.sci
new file mode 100755
index 000000000..528d78922
--- /dev/null
+++ b/1376/CH3/EX3.1/3_1.sci
@@ -0,0 +1,8 @@
+// 3.1
+clc;
+disp('For spring controlled Tc is proportional to theta')
+theta=90*(3/5)^2;
+printf("Deflection for spring controlled instrument=%.2f degree",theta)
+disp('For gravity controlled Tc is proportional to sin(theta)')
+theta=asind((3/5)^2);
+printf("\nDeflection for gravity controlled instrument=%.2f degree",theta)
diff --git a/1376/CH3/EX3.10/3_10.sci b/1376/CH3/EX3.10/3_10.sci
new file mode 100755
index 000000000..8d91b6c7a
--- /dev/null
+++ b/1376/CH3/EX3.10/3_10.sci
@@ -0,0 +1,8 @@
+//3.10
+clc;
+E_unity_pf=230*6*4*1/1000;
+M_constant=2208/E_unity_pf;
+printf("Meter constant=%.1f rev/kWh",M_constant)
+E_consumed=1472/M_constant;
+pf=(E_consumed/(230*5*4))*1000;
+printf("\npower factor=%.2f",pf)
+\ No newline at end of file
diff --git a/1376/CH3/EX3.11/3_11.sci b/1376/CH3/EX3.11/3_11.sci
new file mode 100755
index 000000000..b3b5c09f3
--- /dev/null
+++ b/1376/CH3/EX3.11/3_11.sci
@@ -0,0 +1,7 @@
+//3.11
+clc;
+phi=acosd(0.8);
+alpha_actual=85-phi;
+alpha_true=90-phi;
+er=(alpha_true-alpha_actual)/(alpha_true)*100;
+printf("percentage error at full load=%.2f",er)
+\ No newline at end of file
diff --git a/1376/CH3/EX3.2/3_2.sci b/1376/CH3/EX3.2/3_2.sci
new file mode 100755
index 000000000..305a8caf3
--- /dev/null
+++ b/1376/CH3/EX3.2/3_2.sci
@@ -0,0 +1,9 @@
+// 3.2
+clc;
+I=1000;
+Ia=50*10^-3;
+Is=I-Ia;
+Ra=10;
+Va=Ia*Ra;
+Rs=10*Va/Is;
+printf("The shunt resistance=%.2f ohm",Rs)
diff --git a/1376/CH3/EX3.3/3_3.sci b/1376/CH3/EX3.3/3_3.sci
new file mode 100755
index 000000000..f564c815e
--- /dev/null
+++ b/1376/CH3/EX3.3/3_3.sci
@@ -0,0 +1,7 @@
+//3.3
+clc;
+Is=150*10^-6;
+I=50*10^-6;
+R=4*10^3;
+Rt=R*I/Is;
+printf("\nthe value of total resistance=%.2f ohm",Rt)
diff --git a/1376/CH3/EX3.4/3_4.sci b/1376/CH3/EX3.4/3_4.sci
new file mode 100755
index 000000000..90289b001
--- /dev/null
+++ b/1376/CH3/EX3.4/3_4.sci
@@ -0,0 +1,14 @@
+//3.4
+clc;
+V=1;
+R=2*10^3;
+I=(V/R)*1000;
+printf("Actual current=%.2f mA",I)
+Rm=1000;
+Rt=R+Rm;
+I=(V/Rt)*1000;
+printf("\nCurrent when Rm is 1000 ohm =%.2f mA",I)
+Rm=100;
+Rt=R+Rm;
+I=(V/Rt)*1000;
+printf("\nCurrent when Rm is 100 ohm =%.2f mA",I)
diff --git a/1376/CH3/EX3.5/3_5.sci b/1376/CH3/EX3.5/3_5.sci
new file mode 100755
index 000000000..a47952cf2
--- /dev/null
+++ b/1376/CH3/EX3.5/3_5.sci
@@ -0,0 +1,11 @@
+//3.5
+clc;
+I=20;
+E_expected=2.5*I/100;
+printf("Expected error=+/-%.2f mA",E_expected)
+disp('Actual reading for 5mA indication will be 4.5mA to 5.5mA')
+disp('Actual reading for 15mA indication will be 14.5mA to 15.5mA')
+E_5mA=(0.5/5)*100;
+printf("Error for 5mA reading=%.2f percent",E_5mA)
+E_15mA=(0.5/15)*100;
+printf("\nError for 15mA reading=%.2f percent",E_15mA)
+\ No newline at end of file
diff --git a/1376/CH3/EX3.6/3_6.sci b/1376/CH3/EX3.6/3_6.sci
new file mode 100755
index 000000000..a8237c7ac
--- /dev/null
+++ b/1376/CH3/EX3.6/3_6.sci
@@ -0,0 +1,11 @@
+//3.6
+clc;
+V=20;
+A=20*10^-6;
+Ra=25*10^3;
+Rx=((V/A)-Ra)*10^-3;
+printf("The resistance=%.0f Kohm",Rx)
+E_voltmeter=(2/(100*20))*20*100;
+E_current=(2/(100*20))*50*100;
+E_total=E_voltmeter+E_current;
+printf("\nMaximum possible error=%.1f percent",E_total)
diff --git a/1376/CH3/EX3.7/3_7.sci b/1376/CH3/EX3.7/3_7.sci
new file mode 100755
index 000000000..ecc72e5c1
--- /dev/null
+++ b/1376/CH3/EX3.7/3_7.sci
@@ -0,0 +1,9 @@
+//3.7
+clc;
+V=20;
+A=20*10^-3;
+Rv=10*10^3*20;
+Rx=(V/(A-(V/Rv)))/1000;
+printf("The resistance=%.2f Kohm",Rx)
+E_total=2.5+2.5;
+printf("Maximum possible error=%.0f percent",E_total)
diff --git a/1376/CH3/EX3.8/3_8.sci b/1376/CH3/EX3.8/3_8.sci
new file mode 100755
index 000000000..16adc58d7
--- /dev/null
+++ b/1376/CH3/EX3.8/3_8.sci
@@ -0,0 +1,9 @@
+//3.8
+clc;
+Sp_constant=10.5*10^-6*%pi/180;
+deflection=83;
+Td=Sp_constant*deflection;
+I1=10;
+K=0.078;
+I2=(Td/(K*I1))*10^6;
+printf("Current in the voltage coil=%.2f uA",I2)
diff --git a/1376/CH3/EX3.9/3_9.sci b/1376/CH3/EX3.9/3_9.sci
new file mode 100755
index 000000000..9ad9db10a
--- /dev/null
+++ b/1376/CH3/EX3.9/3_9.sci
@@ -0,0 +1,10 @@
+//3.9
+clc;
+AH=5*1/2;
+printf("AH passed in 30 minuties=%.1f percent",AH)
+V_assumed=0.51*1000/AH;
+V_actual=200;
+Error=V_actual-V_assumed;
+Correction=-Error;
+Cor=Correction*100/V_actual;
+printf("\nCorrection required=%.1f percent",Cor)
+\ No newline at end of file