14 files changed, 93 insertions, 0 deletions
diff --git a/2459/CH17/EX17.1/Ex17_1.PNG b/2459/CH17/EX17.1/Ex17_1.PNG
new file mode 100644
index 000000000..a77ff47f6
--- /dev/null
+++ b/2459/CH17/EX17.1/Ex17_1.PNG
diff --git a/2459/CH17/EX17.1/Ex17_1.sce b/2459/CH17/EX17.1/Ex17_1.sce
new file mode 100644
index 000000000..2c61fd4e3
--- /dev/null
+++ b/2459/CH17/EX17.1/Ex17_1.sce
@@ -0,0 +1,11 @@
+//chapter17
+//example17.1
+//page375
+
+L1=58.6d-6 // H
+C1=300d-12 // F
+
+f=1/(2*%pi*(L1*C1)^0.5)
+printf("frequency of oscillations = %.3f Hz or %.3f kHz",f,f/1000)
+
+// in book the answer is 1199 kHz but the accurate answer is 1200.358 kHz
diff --git a/2459/CH17/EX17.2/Ex17_2.PNG b/2459/CH17/EX17.2/Ex17_2.PNG
new file mode 100644
index 000000000..4d568f5d8
--- /dev/null
+++ b/2459/CH17/EX17.2/Ex17_2.PNG
diff --git a/2459/CH17/EX17.2/Ex17_2.sce b/2459/CH17/EX17.2/Ex17_2.sce
new file mode 100644
index 000000000..45a226e29
--- /dev/null
+++ b/2459/CH17/EX17.2/Ex17_2.sce
@@ -0,0 +1,17 @@
+//chapter17
+//example17.2
+//page377
+
+C1=0.001d-6 // F
+C2=0.01d-6 // F
+L=15d-6 // H
+
+Ct=C1*C2/(C1+C2) // since both are in series
+
+f=1/(2*%pi*(L*Ct)^0.5)
+mv=C1/C2
+
+printf("operating frequency = %.3f Hz or %.3f kHz \n",f,f/1000)
+printf("feedback function = %.3f",mv)
+
+//in book the answer given is 1361 kHz but accurate answer is 1362.922 kHz
diff --git a/2459/CH17/EX17.3/Ex17_3.PNG b/2459/CH17/EX17.3/Ex17_3.PNG
new file mode 100644
index 000000000..78d6f59fb
--- /dev/null
+++ b/2459/CH17/EX17.3/Ex17_3.PNG
diff --git a/2459/CH17/EX17.3/Ex17_3.sce b/2459/CH17/EX17.3/Ex17_3.sce
new file mode 100644
index 000000000..888bfd574
--- /dev/null
+++ b/2459/CH17/EX17.3/Ex17_3.sce
@@ -0,0 +1,18 @@
+//chapter17
+//example17.3
+//page379
+
+L1=1000d-6 // H
+L2=100d-6 // H
+M=20d-6 // H
+C=20d-12 // F
+
+Lt=L1+L2+2*M
+
+f=1/(2*%pi*(Lt*C)^0.5)
+mv=L2/L1
+
+printf("operating frequency = %.3f Hz or %.3f kHz \n",f,f/1000)
+printf("feedback function = %.3f",mv)
+
+//in book the answer is 1052 kHz but the accurate answer is 1054.029 kHz
diff --git a/2459/CH17/EX17.4/Ex17_4.PNG b/2459/CH17/EX17.4/Ex17_4.PNG
new file mode 100644
index 000000000..293677703
--- /dev/null
+++ b/2459/CH17/EX17.4/Ex17_4.PNG
diff --git a/2459/CH17/EX17.4/Ex17_4.sce b/2459/CH17/EX17.4/Ex17_4.sce
new file mode 100644
index 000000000..e772d2f9a
--- /dev/null
+++ b/2459/CH17/EX17.4/Ex17_4.sce
@@ -0,0 +1,11 @@
+//chapter17
+//example17.4
+//page381
+
+R=1d6 // ohm
+C=68d-12 // F
+
+fo=1/(2*%pi*R*C*(6)^0.5)
+printf("frequency of oscillations = %.3f Hz",fo)
+
+// in book the answer given is 954 Hz but the accurate answer is 955.511 Hz
diff --git a/2459/CH17/EX17.5/Ex17_5.PNG b/2459/CH17/EX17.5/Ex17_5.PNG
new file mode 100644
index 000000000..1daad27f6
--- /dev/null
+++ b/2459/CH17/EX17.5/Ex17_5.PNG
diff --git a/2459/CH17/EX17.5/Ex17_5.sce b/2459/CH17/EX17.5/Ex17_5.sce
new file mode 100644
index 000000000..6ce3295da
--- /dev/null
+++ b/2459/CH17/EX17.5/Ex17_5.sce
@@ -0,0 +1,11 @@
+//chapter17
+//example17.5
+//page382
+
+R=220d3 // ohm
+C=250d-12 // F
+
+f=1/(2*%pi*R*C)
+printf("frequency of oscillations = %.3f Hz",f)
+
+//in book the answer given is 2892 Hz but the accurate answer is 2893.726 Hz
diff --git a/2459/CH17/EX17.6/Ex17_6.PNG b/2459/CH17/EX17.6/Ex17_6.PNG
new file mode 100644
index 000000000..11e7f91db
--- /dev/null
+++ b/2459/CH17/EX17.6/Ex17_6.PNG
diff --git a/2459/CH17/EX17.6/Ex17_6.sce b/2459/CH17/EX17.6/Ex17_6.sce
new file mode 100644
index 000000000..d13c95412
--- /dev/null
+++ b/2459/CH17/EX17.6/Ex17_6.sce
@@ -0,0 +1,8 @@
+//chapter17
+//example17.6
+//page387
+
+// frequency is inversely proportional to thickness
+// so if thickness is reduced by 1%, frequency increases by 1%
+
+printf("If thickness of crystal is reduced by 1 percent, then \nfrequency is increased by 1 percent \nbecause frequency is inversely proportional to thickness \n")
diff --git a/2459/CH17/EX17.7/Ex17_7.PNG b/2459/CH17/EX17.7/Ex17_7.PNG
new file mode 100644
index 000000000..a01c563b0
--- /dev/null
+++ b/2459/CH17/EX17.7/Ex17_7.PNG
diff --git a/2459/CH17/EX17.7/Ex17_7.sce b/2459/CH17/EX17.7/Ex17_7.sce
new file mode 100644
index 000000000..206c8d983
--- /dev/null
+++ b/2459/CH17/EX17.7/Ex17_7.sce
@@ -0,0 +1,17 @@
+//chapter17
+//example17.7
+//page387
+
+L=1 // H
+C=0.01d-12 // F
+Cm=20d-12 // F
+
+fs=1/(2*%pi*(L*C)^0.5)
+Ct=C*Cm/(C+Cm)
+fp=1/(2*%pi*(L*Ct)^0.5)
+
+printf("series resonant frequency = %.3f Hz  or %.3f kHz\n",fs,fs/1000)
+printf("parallel resonant frequency = %.3f Hz or %.3f kHz\n",fp,fp/1000)
+
+// in book the answer given is 1589 kHz for series resonant frequency but the accurate answer is 1591.549 kHz
+// in book the answer given is 1590 kHz for parallel resonant frequency but the accurate answer is 1591.947 kHz