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11 files changed, 272 insertions, 0 deletions

diff --git a/1628/CH4/EX4.1/Ex4_1.sce b/1628/CH4/EX4.1/Ex4_1.sce
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+
+                             // Examle 4.1
+
+               // Reffer the diagram (4.2a)
+               // Using Superpositon theorem
+
+I=-0.5;                       // Source current
+I1=I*(0.3/(0.1+0.3));         // When 0.5-A Current source is on { by voltage divider }
+
+V=80*10^-3;                   // Voltage source
+I2=(V/(0.1+0.3));             // When 80-mV voltage source is on { by ohm's law }
+
+i=I1+I2;                      // Current in the circuit  { by Superpositon theorem }
+disp(' Current in the circuit = '+string(i)+' Amp');
+
+
+
+
+
+           //   p 105          4.1
+
diff --git a/1628/CH4/EX4.10/Ex4_10.sce b/1628/CH4/EX4.10/Ex4_10.sce
new file mode 100755
index 000000000..fbc0b8fa7
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@@ -0,0 +1,29 @@
+

+              // Examle 4.10

+

+             // From Diagram 4.12

+

+P=25;                              // Power

+Rl=8;                              // Load resistance

+Vth=P*4*Rl;                        // Thevenin's equivalent voltage

+

+           // If Load is Short-ckt (RL=0)

+Vo=0;                              // Voltage

+IL=1;                              // load current 

+Po1=Vo*IL;                         // O/p power

+

+           // If Load is Open-ckt ( RL=infinity )

+IL1=0;                             // Load current

+Vo1=1;                             // Voltage

+Po2=Vo1*IL1;                       // O/p power          

+           

+x=[0 2 4 6 8 16 32 ];              // Diffrent value of RL

+y=[0 16 22.22 24.49 25 22.22 16 ]  // Value of Power         

+           

+plot2d(x,y);                       // To plot graph           

+xlabel('RL (in Ohms )--->');       // For X-Label      

+ylabel('Po (in W ---->')           // For Y-Label

+

+

+

+             //  View  p 115            4.10

diff --git a/1628/CH4/EX4.11/Ex4_11.sce b/1628/CH4/EX4.11/Ex4_11.sce
new file mode 100755
index 000000000..96b356d68
--- /dev/null
+++ b/1628/CH4/EX4.11/Ex4_11.sce
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+
+                             // Examle 4.11
+
+               // From the diagram (4.14)
+ 
+Req=2+{(12*4)/(12+4)}+4;            // Equivalent resistance (for 4.14a )
+v=36;                               // Voltage source
+i=v/Req;                            // Current supply by the voltage source
+I=i*(12/(12+4));                    // Current in branch B  ==> { by current divider }
+disp(' Current in branch B = '+string(I)+' Amp');
+
+Req1=3+{(12*6)/(12+6)}+1;           // Equivalent resistance (for 4.14b )
+i1=v/Req1;                          // Current supply by the voltage source
+I1=i1*(12/(12+6));                  // Current in branch A  ==> { by current divider }
+disp(' Current in branch A = '+string(I1)+' Amp');
+
+Rtr=v/I;                           // Transfer resistance
+disp(' Transfer resistance from Branch A to B = '+string(Rtr)+' Ohm');
+
+
+
+                      // p 117         4.11
+
diff --git a/1628/CH4/EX4.2/Ex4_2.sce b/1628/CH4/EX4.2/Ex4_2.sce
new file mode 100755
index 000000000..800cdb97b
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+++ b/1628/CH4/EX4.2/Ex4_2.sce
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+
+
+                             // Examle 4.2
+
+               // Reffer the diagram (4.3)
+               // Using Superpositon theorem
+
+V=10;                         // Voltage source
+I1=(V/(50+150));              // When 10-V voltage source is on { by ohm's law }
+
+i1=40;                        // Source current
+I2=i1*(150/(50+150));         // When 40-A Current source is on { by current divider }
+
+i2=-120;                      // Source current
+I3=i2*(50/(50+150));          // When (-120)-A Current source is on { by current divider }
+
+
+I=I1+I2+I3;                   // Current in the circuit  { by Superpositon theorem }
+disp(' Current in the circuit = '+string(I)+' Amp');
+
+
+
+
+
+           //   p 106          4.2
+
+
+
+
+
+
+
+
+
diff --git a/1628/CH4/EX4.3/Ex4_3.sce b/1628/CH4/EX4.3/Ex4_3.sce
new file mode 100755
index 000000000..e616a9549
--- /dev/null
+++ b/1628/CH4/EX4.3/Ex4_3.sce
@@ -0,0 +1,27 @@
+

+

+                  //  Example 4.3

+

+            // From the diagram 4.5

+            // Using super position theorem

+            // 4-A current source is active

+            

+i=4/{1+(2+3)};          // Current

+R=3;                    // Rsistance of 3 Ohms

+V4=i*R;                 // Voltage across 3 Ohms resistance in Case-1

+

+            // 5-A current source is active

+i5=5;                       // 5-A current source             

+V5=(-i5)*{1/[1+(2+3)]*3};   // Voltage across 3 Ohms resistance in Case-2  

+

+            // 6-V voltage source is active

+i6=6;                      // 6-A current source                 

+V6=i6*{3/[1+(2+3)]};       // Voltage across 3 Ohms resistance in Case-3            

+            

+V=V4+V5+V6;                // Voltage across 3 Ohms resistance

+disp(' Voltage across 3 Ohms resistance is = '+string(V)+' Volt');             

+            

+              

+            

+            

+                //  p 106             4.3
\ No newline at end of file
diff --git a/1628/CH4/EX4.4/Ex4_4.sce b/1628/CH4/EX4.4/Ex4_4.sce
new file mode 100755
index 000000000..cf12bfb6c
--- /dev/null
+++ b/1628/CH4/EX4.4/Ex4_4.sce
@@ -0,0 +1,23 @@
+
+
+                             // Examle 4.4
+
+               // From the diagram (4.6a)
+               // Using Superpositon theorem
+
+V=10;                         // Voltage source
+I1=(V/(2+4+6));               // When 10-V voltage source is on { by ohm's law }
+
+                              // we have to find Is= ?
+                              // When Is-A Current source is on
+                              // will have { I2= -(2/3)Is }
+                              // given that I1+I2= 0
+                              //  there for 5/6 - (2/3)Is= 0
+Is=(5*3)/(6*2);               // Source current
+disp(' The value of source current (Is)  = '+string(Is)+' Amp');
+
+
+
+
+
+           //   p 108          4.4
diff --git a/1628/CH4/EX4.5/Ex4_5.sce b/1628/CH4/EX4.5/Ex4_5.sce
new file mode 100755
index 000000000..4e36b7966
--- /dev/null
+++ b/1628/CH4/EX4.5/Ex4_5.sce
@@ -0,0 +1,26 @@
+
+                             // Examle 4.5
+
+               // From the diagram (4.8)
+               // Using thevenin's equivalent theorem
+
+V1=50;                             // Voltage source V1
+V2=10;                             // Voltage source V2
+I1=(V1-V2)/(10+10+20);             // Current through the ckt ( when Current source is off )
+
+i=1.5;                            // Current source i
+I2=i*(10/(10+(10+20)));           // Current through the ckt ( when Current source is active )
+I=I1+I2;                          // Addition of I1 & I2
+Vth= I*20;                        // Thevenin's voltage at 20 Ohms R
+
+Rth=(20*(10+10))/(20+(10+10));    // Thevenin's resistance 
+
+Vl=Vth*(5/(5+10));                // Voltage across Rl
+disp(' Voltage across olad resistor (Rl) = '+string(Vl)+' Volt');
+
+
+
+
+
+
+                    // p 110         4.5
diff --git a/1628/CH4/EX4.6/Ex4_6.sce b/1628/CH4/EX4.6/Ex4_6.sce
new file mode 100755
index 000000000..f5f2a4f15
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@@ -0,0 +1,23 @@
+
+                             // Examle 4.6
+
+               // From the diagram (3.24a)
+               // Using thevenin's equivalent theorem
+
+Vth=5;                            // Thevenin's voltage ==> { by Circuit reduction }
+
+Rth=3;                            // Thevenin's resistance ==> { by Circuit reduction }
+
+Vl=Vth*(3/(3+3));                // Voltage across Rl
+disp(' Voltage across olad resistor (Rl) = '+string(Vl)+' Volt');
+
+
+
+
+
+
+                    // p 111         4.6
+
+
+
+
diff --git a/1628/CH4/EX4.7/Ex4_7.sce b/1628/CH4/EX4.7/Ex4_7.sce
new file mode 100755
index 000000000..510ae012e
--- /dev/null
+++ b/1628/CH4/EX4.7/Ex4_7.sce
@@ -0,0 +1,25 @@
+
+                             // Examle 4.7
+
+               // From the diagram (4.11a)
+
+                           // Using Nortan's equivalent theorem
+
+R1=5;                      // Resistance R1
+R2=10;                     // Resistance R2
+V1=10;                     // Voltage source V1
+I1=V1/R1;                  // Current I1
+
+V2=5;                      // Voltage source V2
+I2=V2/R2;                  // Current I2
+IN=I1+I2;                  // Nortan's current
+
+RN=(R1*R2)/(R1+R2);        // Nortan's resistance
+
+Rl=5;                      // Load resistance
+Il=IN*(RN/(RN+Rl));        // Load current
+disp(' Load current (Il)  = '+string(Il)+' Amp');
+
+
+
+        // p 113            4.7
diff --git a/1628/CH4/EX4.8/Ex4_8.sce b/1628/CH4/EX4.8/Ex4_8.sce
new file mode 100755
index 000000000..67b9a7e6f
--- /dev/null
+++ b/1628/CH4/EX4.8/Ex4_8.sce
@@ -0,0 +1,16 @@
+
+                             // Examle 4.8
+
+Voc=12.6;                 // Voltage of car battery 
+Isc=300;                  // Short-circuit current 
+Ro=Voc/Isc;               // O/p resistance 
+
+                          // { P=Vht^2/4Rth } , but here Vth= Voc & Rth= Ro 
+Pavl=Voc^2/(4*Ro);        // Available power
+disp(' Available power is = '+string(Pavl)+ ' Watt');
+
+
+
+
+ 
+                 //  p 114            4.8
\ No newline at end of file
diff --git a/1628/CH4/EX4.9/Ex4_9.sce b/1628/CH4/EX4.9/Ex4_9.sce
new file mode 100755
index 000000000..a82126c38
--- /dev/null
+++ b/1628/CH4/EX4.9/Ex4_9.sce
@@ -0,0 +1,25 @@
+
+                             // Examle 4.9
+
+n=8;                       // No.Of dry cells
+E=1.5;                     // Emf of cell
+Voc=n*E;                   // open-circuit Voltage of battery 
+r=0.75;                    // Internal resistance
+Ro=r*n;                    // O/p resistance 
+
+              // ==> { P=Vht^2/4Rth } , but here Vth= Voc & Rth= Ro 
+
+Pavl=Voc^2/(4*Ro);         // Available power
+disp(' Available power is = '+string(Pavl)+ ' Watt');
+
+
+
+
+ 
+                 //  p 115            4.9
+
+
+
+
+
+