8 files changed, 136 insertions, 0 deletions
diff --git a/3809/CH3/EX3.1/EX3_1.sce b/3809/CH3/EX3.1/EX3_1.sce
new file mode 100644
index 000000000..c34d993d3
--- /dev/null
+++ b/3809/CH3/EX3.1/EX3_1.sce
@@ -0,0 +1,14 @@
+//Chapter 3, Example 3.1
+
+clc
+//Initialisation'
+i1=8                       //current in amp
+i2=1                       //current in amp
+i3=4                       //current in amp
+
+//Calculation
+i4=i3+i2-i1                       //current in amp
+
+
+//Results
+printf("Current, I4 = %d A",i4)
diff --git a/3809/CH3/EX3.2/EX3_2.sce b/3809/CH3/EX3.2/EX3_2.sce
new file mode 100644
index 000000000..0a1d8c68f
--- /dev/null
+++ b/3809/CH3/EX3.2/EX3_2.sce
@@ -0,0 +1,13 @@
+//Chapter 3, Example 3.2
+
+clc
+//Initialisation'
+v1=3                          //voltage
+v3=3                          //voltage
+e=12                          //voltage
+
+//Calculation
+v2=v1+v3-e                          //voltage
+
+//Results
+printf("Voltage, V = %d V",v2)
diff --git a/3809/CH3/EX3.3/EX3_3.sce b/3809/CH3/EX3.3/EX3_3.sce
new file mode 100644
index 000000000..ebe8d6bf2
--- /dev/null
+++ b/3809/CH3/EX3.3/EX3_3.sce
@@ -0,0 +1,24 @@
+//Chapter 3, Example 3.3
+clc
+//Initialisation
+v1=30                        //voltage
+r1=10*10**3                  //resistance in ohm
+r2=10*10**3                  //resistance in ohm
+r3=10*10**3                  //resistance in ohm
+
+//Calculation
+voc=v1/2                   //open circuit voltage
+r23=(r2*r3)/(r2+r3)        //resistance in parallel in ohm
+rt=r1+r23                  //resistance in ohm
+i1=v1/rt                   //current in ampere
+isc=i1/2                   //short circuit current in ampere
+R=voc/isc                  //resistance in ohm
+
+
+//Results
+printf("For Thevenin Circuit \n")
+printf("V = %d V\n",voc)
+printf("R = %d kOhm\n\n",R/1000)
+printf("For Norton Circuit \n")
+printf("I = %d mA\n",isc*1000)
+printf("R = %d kOhm",R/1000)
diff --git a/3809/CH3/EX3.4/EX3_4.sce b/3809/CH3/EX3.4/EX3_4.sce
new file mode 100644
index 000000000..0e77235a4
--- /dev/null
+++ b/3809/CH3/EX3.4/EX3_4.sce
@@ -0,0 +1,14 @@
+//Chapter 3, Example 3.4
+clc
+
+R1=25               //resistance in ohm
+R2=400              //resistance in ohm
+
+//To solve simultaneous equation by converting them into matrices form
+a=[R1 -2;R2 -8]
+b=[50;3200]
+x=a\b
+
+//Results
+printf("Voc = %d V\n",x(1))              //display voltage Voc
+printf("R = %d Ohm",x(2))                 //display Resistance R
diff --git a/3809/CH3/EX3.5/EX3_5.sce b/3809/CH3/EX3.5/EX3_5.sce
new file mode 100644
index 000000000..92ed523d6
--- /dev/null
+++ b/3809/CH3/EX3.5/EX3_5.sce
@@ -0,0 +1,19 @@
+//Chapter 3, Example 3.5
+
+clc
+//Initialisation'
+v1=15                          //voltage
+v2=20                          //voltage
+r1=100                         //resistance in ohm
+r2=200                        //resistance in ohm
+r3=50                        //resistance in ohm
+
+//Calculation
+rp1=(r2*r3)/(r2+r3)                        //resistance in parallel in ohm
+vp1=v1*(rp1/(r1+rp1))                          //voltage V2
+rp2=(r1*r3)/(r1+r3)                        //resistance in parallel in ohm
+vp2=v2*(rp2/(r2+rp2))                          //voltage V2
+vp=vp1+vp2                          // total voltage
+
+//Results
+printf("Voltage, V = %.2f V",vp)
diff --git a/3809/CH3/EX3.6/EX3_6.sce b/3809/CH3/EX3.6/EX3_6.sce
new file mode 100644
index 000000000..fd73e176f
--- /dev/null
+++ b/3809/CH3/EX3.6/EX3_6.sce
@@ -0,0 +1,18 @@
+//Chapter 3, Example 3.6
+
+clc
+//Initialisation'
+v1=5                          //voltage
+i=2                            //current in ampere
+r1=10                         //resistance in ohm
+r2=5                        //resistance in ohm
+
+//Calculation
+i1=v1/(r1+r2)                            //current in ampere
+r=(r1*r2)/(r1+r2)                      //resistance in ohm
+v=i*r                         //voltage
+i2=v/r2                           //current in ampere
+i3=i1+i2                           //current in ampere
+
+//Results
+printf("Current, I = %.2f A",i3)
diff --git a/3809/CH3/EX3.7/EX3_7.sce b/3809/CH3/EX3.7/EX3_7.sce
new file mode 100644
index 000000000..a359f20e8
--- /dev/null
+++ b/3809/CH3/EX3.7/EX3_7.sce
@@ -0,0 +1,20 @@
+//Chapter 3, Example 3.7
+clc
+//Initialisation
+v1=50                          //voltage
+v2=15                          //voltage
+v3=100                          //voltage
+r1=10                         //resistance in ohm
+r2=20                        //resistance in ohm
+r3=30                        //resistance in ohm
+r4=25                        //resistance in ohm
+
+//Calculation
+//by making a two linear equations, and solving them by matrix method
+a=[(-13/60) (1/20);(1/60) (-9/100)]
+b=[-5;(-100/30)]
+x=a\b
+I1=x(2)/25              //current in ampere
+
+//Results
+printf("Current, I1 = %.1f A",I1)
diff --git a/3809/CH3/EX3.8/EX3_8.sce b/3809/CH3/EX3.8/EX3_8.sce
new file mode 100644
index 000000000..a1bc927b4
--- /dev/null
+++ b/3809/CH3/EX3.8/EX3_8.sce
@@ -0,0 +1,14 @@
+//Chapter 3, Example 3.8
+clc
+Re=10                  //resistance in ohm
+//To solve simulataneous equation by converting them itno matrices form
+a=[-160 20 30;20 -210 10;30 10 -190]
+b=[-50;0; 0]
+x=a\b
+Ve=Re*(x(3)-x(2))             //voltage 
+
+//Results
+printf("I1 = %.2f mA\n",x(1)*1000)
+printf("I2 = %.2f mA\n",x(2)*1000)
+printf("I3 = %.2f mA\n",x(3)*1000)
+printf("Voltage, VE = %.2f V\n",Ve)