initial commit / add all books

16 files changed, 233 insertions, 0 deletions

diff --git a/154/CH7/EX7.1/ch7_1.sce b/154/CH7/EX7.1/ch7_1.sce
new file mode 100755
index 000000000..66f5b3dd0
--- /dev/null
+++ b/154/CH7/EX7.1/ch7_1.sce
@@ -0,0 +1,53 @@
+clc

+disp("Example 7.1")

+printf("\n")

+

+t1=-5:0.5:8

+v1=cos (t1)

+figure

+a= gca ();

+plot(t1,v1)

+xtitle ('v1 vs t1','t1','v1 ');

+a. thickness = 2;

+//From the graph

+printf("Time period1= %3.3fs\n Frequency 1=%0.3fHz\n",6.2832,0.159)

+

+t2=-4:0.5:10

+v2=sin (t2)

+figure

+a= gca ();

+plot(t2,v2)

+xtitle ('v2 vs t2','t2','v2 ');

+a. thickness = 2;

+//From the graph

+printf("Time period 2= %3.3fs\n Frequency 2=%0.3fHz\n",6.2832,0.159)

+

+t3=-1:0.05:1.5

+v3=2*cos (2*%pi*t3)

+figure

+a= gca ();

+plot(t3,v3)

+xtitle ('v3 vs t3','t3','v3 ');

+a. thickness = 2;

+//From the graph

+printf("Time period 3= %ds\n Frequency 3=%dHz\n",1,1)

+

+t4=-5:0.5:12

+v4=2*cos (%pi*t4/4-%pi/4)

+figure

+a= gca ();

+plot(t4,v4)

+xtitle ('v4 vs t4','t4','v4 ');

+a. thickness = 2;

+//From the graph

+printf("Time period 4= %ds\n Frequency 4=%0.3fHz\n",8,0.125)

+

+t5=-1:0.005:1

+v5=5*cos (10*t5+%pi/3)

+figure

+a= gca ();

+plot(t5,v5)

+xtitle ('v5 vs t5','t5','v5 ');

+a. thickness = 2;

+//From the graph

+printf("Time period 5= %0.3fs\n Frequency 5=%3.2fHz\n",.62832,1.59)

diff --git a/154/CH7/EX7.1/ch7_11.jpeg b/154/CH7/EX7.1/ch7_11.jpeg
new file mode 100755
index 000000000..7c8e20e72
--- /dev/null
+++ b/154/CH7/EX7.1/ch7_11.jpeg
diff --git a/154/CH7/EX7.13/ch7_13.sce b/154/CH7/EX7.13/ch7_13.sce
new file mode 100755
index 000000000..86523df02
--- /dev/null
+++ b/154/CH7/EX7.13/ch7_13.sce
@@ -0,0 +1,24 @@
+clc

+disp("Example 7.13")

+printf("\n")

+

+printf("Given")

+disp("Capacitance is 1uF")

+C=1*10^-6;

+disp("a)")

+//Let k=1 which results in t=5ms

+t=5*10^-3;

+vac=(integrate('.004','t',0,0.003)-integrate('.002','t',0.003,0.005))/C;

+printf("vac=%dV\n",vac);

+

+//In general

+disp("At t=5k voltage follows as v=8k ms")

+

+disp("b)")

+//As vdc=1/C*integrate(Idc*dt)

+//On solving for Idc

+vdc=vac

+Idc=(1/((integrate('1/vac','t',0,0.005))/C))*10^3

+printf("Idc=%3.2fmA\n",Idc);

+disp("Idc is equal to <i(t)> in the period of 5ms")

+

diff --git a/154/CH7/EX7.17/ch7_17.sce b/154/CH7/EX7.17/ch7_17.sce
new file mode 100755
index 000000000..de2f600cf
--- /dev/null
+++ b/154/CH7/EX7.17/ch7_17.sce
@@ -0,0 +1,39 @@
+clc

+disp("Example 7.17")

+printf("\n")

+

+printf("Given")

+disp("Capacitance is 100nF")

+disp("The voltage across capacitor increases linearly from 0 to 10V")

+C=100*10^-9;

+//From figure 7.10(a)

+disp("a)")

+//At t=T voltage across capacitor =10V

+vc=10;

+Q=C*vc;

+printf("Charge across capacitor is %fC\n",Q)

+disp("b)")

+//The waveform shown in fig 7.10(a) can be written as

+disp("0                 t<0")

+disp("I0=10^-6/T        0<t<T")

+disp("0                 t>T")

+

+

+//For T=1s;

+T=1;

+I0=10^-6/T;

+printf("I0(1s)=%fA\n",I0);

+

+//For T=1ms;

+T=1*10^-3;

+I0=10^-6/T;

+printf("I0(1ms)=%0.3fA\n",I0);

+

+//For T=1us;

+T=1*10^-6;

+I0=10^-6/T;

+printf("I0(1us)=%dA",I0);

+

+

+

+

diff --git a/154/CH7/EX7.2/ch7_2.sce b/154/CH7/EX7.2/ch7_2.sce
new file mode 100755
index 000000000..07e77b0d6
--- /dev/null
+++ b/154/CH7/EX7.2/ch7_2.sce
@@ -0,0 +1,12 @@
+clc

+disp("Example 7.2")

+printf("\n")

+

+//Let wt=q

+q=-8:0.5:8

+v=5*cos (q)

+figure

+a= gca ();

+plot(q,v)

+xtitle ('v vs wt','wt','v ');

+a. thickness = 2;

diff --git a/154/CH7/EX7.2/ch7_21.jpeg b/154/CH7/EX7.2/ch7_21.jpeg
new file mode 100755
index 000000000..9a9fcd65b
--- /dev/null
+++ b/154/CH7/EX7.2/ch7_21.jpeg
diff --git a/154/CH7/EX7.22/ch7_22.sce b/154/CH7/EX7.22/ch7_22.sce
new file mode 100755
index 000000000..b9cc022ae
--- /dev/null
+++ b/154/CH7/EX7.22/ch7_22.sce
@@ -0,0 +1,20 @@
+clc

+disp("Example 7.22")

+printf("\n")

+

+//The general equation of exponential decay function is given by

+disp("v(t)=A*e(-t/T)+B")

+//We need to solve A and B

+//At t=0 we get v(0)=A+B    (1)

+//at t=inf we get B=1       (2)

+//Solving (1) and (2)

+A=4;B=1;

+T=3;

+t=0:0.05:10

+v=4*exp(-t/T)+1;

+figure

+a= gca ();

+plot(t,v)

+xtitle ('v vs t','t','v');

+a. thickness = 2;

+

diff --git a/154/CH7/EX7.22/ch7_221.jpeg b/154/CH7/EX7.22/ch7_221.jpeg
new file mode 100755
index 000000000..53a8addf1
--- /dev/null
+++ b/154/CH7/EX7.22/ch7_221.jpeg
diff --git a/154/CH7/EX7.23/ch7_23.sce b/154/CH7/EX7.23/ch7_23.sce
new file mode 100755
index 000000000..2109c678a
--- /dev/null
+++ b/154/CH7/EX7.23/ch7_23.sce
@@ -0,0 +1,33 @@
+clc

+disp("Example 7.23")

+printf("\n")

+

+//Sketch voltage 'v'

+t=-.001:0.00005:0

+t1=0:0.00005:.001

+T=1*10^-3;

+V0=10;

+v=V0*exp(t/T)

+v1=V0*exp(-t1/T)

+figure

+a= gca ();

+plot(t,v)

+plot(t1,v1)

+xtitle ('v vs t','t (ms)','v ');

+a. thickness = 2;

+

+//Sketch current 'i'

+t=-.001:0.00005:0

+t1=0:0.00005:.001

+T=1*10^-3;

+I0=10*10^-3;

+i=I0*exp(t/T)

+i1=-I0*exp(-t1/T)

+figure

+a= gca ();

+plot(t,i)

+plot(t1,i1)

+xtitle ('i vs wt','t (ms)','i (mA)');

+a. thickness = 2;

+

+

diff --git a/154/CH7/EX7.23/ch7_231.jpeg b/154/CH7/EX7.23/ch7_231.jpeg
new file mode 100755
index 000000000..a2488c2d2
--- /dev/null
+++ b/154/CH7/EX7.23/ch7_231.jpeg
diff --git a/154/CH7/EX7.23/ch7_232.jpeg b/154/CH7/EX7.23/ch7_232.jpeg
new file mode 100755
index 000000000..ea3aa2b10
--- /dev/null
+++ b/154/CH7/EX7.23/ch7_232.jpeg
diff --git a/154/CH7/EX7.25/ch7_25.sce b/154/CH7/EX7.25/ch7_25.sce
new file mode 100755
index 000000000..4d0c5dabd
--- /dev/null
+++ b/154/CH7/EX7.25/ch7_25.sce
@@ -0,0 +1,9 @@
+clc

+disp("Example 7.25")

+printf("\n")

+

+Xavg=(2+4+11+5+7+6+9+10+3+6+8+4+1+3+5+12)/16;

+//Let X=X^2eff

+X=(2^2+4^2+11^2+5^2+7^2+6^2+9^2+10^2+3^2+6^2+8^2+4^2+1^2+3^2+5^2+12^2)/16

+Xeff=sqrt(X);

+printf("Xavg=%d\n Xeff=%3.2f\n",Xavg,Xeff)
\ No newline at end of file
diff --git a/154/CH7/EX7.26/ch7_26.sce b/154/CH7/EX7.26/ch7_26.sce
new file mode 100755
index 000000000..8b763778c
--- /dev/null
+++ b/154/CH7/EX7.26/ch7_26.sce
@@ -0,0 +1,17 @@
+clc

+disp("Example 7.26")

+printf("\n")

+

+printf("Given")

+disp("Period =10s")

+disp("Interval is 1ms")

+disp("Voltage of binary signal is either 0.5 or -0.5")

+T=10;

+//During 10s period there are 10000 intervals of 1ms each

+//For calculating average equal number of intervals are considered at 0.5V and -0.5V

+vavg=(0.5*5000-0.5*5000)/10000

+//The effective value of v(t) is

+//Let V=V^2eff

+V=(0.5^2*5000+(-0.5)^2*5000)/10000

+Veff=sqrt(V)

+printf("vavg=%dV\nVeff=%3.2fV\n",vavg,Veff)

diff --git a/154/CH7/EX7.3/ch7_3.sce b/154/CH7/EX7.3/ch7_3.sce
new file mode 100755
index 000000000..122832eeb
--- /dev/null
+++ b/154/CH7/EX7.3/ch7_3.sce
@@ -0,0 +1,12 @@
+clc

+disp("Example 7.3")

+printf("\n")

+

+t1=-10:0.05:10

+v=5*cos (%pi*t1/6+%pi/6)

+figure

+a= gca ();

+plot(t1,v)

+xtitle ('v vs %pi*t/6','%pi*t/6','v ');

+a. thickness = 2;

+

diff --git a/154/CH7/EX7.3/ch7_31.jpeg b/154/CH7/EX7.3/ch7_31.jpeg
new file mode 100755
index 000000000..f74120d20
--- /dev/null
+++ b/154/CH7/EX7.3/ch7_31.jpeg
diff --git a/154/CH7/EX7.5/ch7_5.sce b/154/CH7/EX7.5/ch7_5.sce
new file mode 100755
index 000000000..515f4b915
--- /dev/null
+++ b/154/CH7/EX7.5/ch7_5.sce
@@ -0,0 +1,14 @@
+clc

+disp("Example 7.5")

+printf("\n")

+

+printf("Given")

+disp("v(t)=cos5t+3sin(3t+45)")

+//Finding the periods of individual terms

+disp("Period of cos5t=2*%pi/5")

+disp("Period of 3*sin(3t+45)=2*%pi/3")

+//If T=2*%pi

+T=2*%pi;

+disp("Now T=5*T1=3*T2")

+//Now the relation for T is the smallest common integral multiple of T1 and T2

+printf("Period = %3.2fs\n",T)
\ No newline at end of file