10 files changed, 91 insertions, 0 deletions
diff --git a/2459/CH4/EX4.1/Ex4_1.PNG b/2459/CH4/EX4.1/Ex4_1.PNG
new file mode 100644
index 000000000..61fb2e699
--- /dev/null
+++ b/2459/CH4/EX4.1/Ex4_1.PNG
diff --git a/2459/CH4/EX4.1/Ex4_1.sce b/2459/CH4/EX4.1/Ex4_1.sce
new file mode 100644
index 000000000..949a3acaf
--- /dev/null
+++ b/2459/CH4/EX4.1/Ex4_1.sce
@@ -0,0 +1,22 @@
+//chapter4
+//example4.1
+//page68
+
+rp=300 // ohm
+Rl=1200 // ohm
+
+Vm=200*2^0.5 //V
+Im=Vm/(rp+Rl)
+Idc=Im/%pi // in ampere
+Idc_mA=Idc*1000 // in mA
+Irms=Im/2
+Irms_mA=Irms*1000
+Pdc=Idc^2*Rl
+Pac=Irms^2*(rp+Rl)
+efficiency=(Pdc/Pac)*100
+
+printf("dc current = %.3f A or %.3f mA \n",Idc,Idc_mA)
+printf("rms current = %.3f A or %.3f mA \n",Irms,Irms_mA)
+printf("rectification efficiency = %.2f percentage",efficiency)
+
+// accurate answer of rms current is 94.281 mA but in book it is given as 94.5 mA
diff --git a/2459/CH4/EX4.2/Ex4_2.PNG b/2459/CH4/EX4.2/Ex4_2.PNG
new file mode 100644
index 000000000..32b4929db
--- /dev/null
+++ b/2459/CH4/EX4.2/Ex4_2.PNG
diff --git a/2459/CH4/EX4.2/Ex4_2.sce b/2459/CH4/EX4.2/Ex4_2.sce
new file mode 100644
index 000000000..c31699d80
--- /dev/null
+++ b/2459/CH4/EX4.2/Ex4_2.sce
@@ -0,0 +1,17 @@
+//chapter4
+//example4.2
+//page68
+
+rp=200 // ohm
+Rl=800 // ohm
+Edc=100 // V
+
+// if maximum ac voltage required=Vm then
+// Edc=Idc*Rl i.e. Edc=Vm*Rl/(%pi*(rp+Rl))
+// thus
+
+Vm=Edc*%pi*(rp+Rl)/Rl
+efficiency=(0.406/(1+(rp/Rl)))*100
+
+printf("required ac voltage = %.3f V \n",Vm)
+printf("rectification efficiency = %.3f percentage",efficiency)
diff --git a/2459/CH4/EX4.3/Ex4_3.PNG b/2459/CH4/EX4.3/Ex4_3.PNG
new file mode 100644
index 000000000..1be4fc2a3
--- /dev/null
+++ b/2459/CH4/EX4.3/Ex4_3.PNG
diff --git a/2459/CH4/EX4.3/Ex4_3.sce b/2459/CH4/EX4.3/Ex4_3.sce
new file mode 100644
index 000000000..274385a96
--- /dev/null
+++ b/2459/CH4/EX4.3/Ex4_3.sce
@@ -0,0 +1,18 @@
+//chapter4
+//example4.3
+//page69
+
+Vm=1000 // V
+rp=500 // ohm
+Rl=4500 // ohm
+
+Im=Vm/(rp+Rl) // in A
+Idc=Im/%pi // in A
+Idc_mA=Idc*1000 // in mA
+Irms=Im/2 // since ac current is equal to rms current
+Irms_mA=Irms*1000 // in mA
+W=Irms^2*(rp+Rl) // in watts
+
+printf("dc ammeter reading = %.3f A or %.3f mA \n",Idc,Idc_mA)
+printf("reading of ac ammeter = %.3f A or %.3f mA \n",Irms,Irms_mA)
+printf("reading of wattmeter = %.3f W",W)
diff --git a/2459/CH4/EX4.4/Ex4_4.PNG b/2459/CH4/EX4.4/Ex4_4.PNG
new file mode 100644
index 000000000..28073f574
--- /dev/null
+++ b/2459/CH4/EX4.4/Ex4_4.PNG
diff --git a/2459/CH4/EX4.4/Ex4_4.sce b/2459/CH4/EX4.4/Ex4_4.sce
new file mode 100644
index 000000000..d9adac616
--- /dev/null
+++ b/2459/CH4/EX4.4/Ex4_4.sce
@@ -0,0 +1,18 @@
+//chapter4
+//example4.4
+//page74
+
+Vs=300 // V
+rp=500 // ohm
+Rl=2000 // ohm
+Vm=Vs*2^0.5 // in V
+Im=Vm/(rp+Rl) // A
+Idc=2*Im/%pi // A
+Pdc=Idc^2*Rl // W
+Irms=Im/2^0.5 //A
+Pac=Irms^2*(rp+Rl) // W
+efficiency=(Pdc/Pac)*100
+
+printf("dc power output = %.3f W \n",Pdc)
+printf("ac power input = %.3f W \n",Pac)
+printf("efficiency = %.2f percentage",efficiency)
diff --git a/2459/CH4/EX4.5/Ex4_5.PNG b/2459/CH4/EX4.5/Ex4_5.PNG
new file mode 100644
index 000000000..0c58b55d3
--- /dev/null
+++ b/2459/CH4/EX4.5/Ex4_5.PNG
diff --git a/2459/CH4/EX4.5/Ex4_5.sce b/2459/CH4/EX4.5/Ex4_5.sce
new file mode 100644
index 000000000..44b3f65b9
--- /dev/null
+++ b/2459/CH4/EX4.5/Ex4_5.sce
@@ -0,0 +1,16 @@
+//chapter4
+//example4.5
+//page74
+
+Vm=1000 // V
+rp=500 // ohm
+Rl=4500 // ohm
+
+Im=Vm/(rp+Rl) // in ampere
+Idc=2*Im/%pi // in ampere
+Idc_mA=Idc*1000 // in mA
+Iac=Im/2^0.5 // in ampere
+Iac_mA=Iac*1000 // in mA
+
+printf("dc ammeter reading = %.3f A or %.3f mA \n",Idc,Idc_mA)
+printf("ac ammeter reading = %.3f A or %.3f mA",Iac,Iac_mA)