Added new codeHEADmaster

9 files changed, 192 insertions, 0 deletions

diff --git a/3830/CH4/EX4.1/Ex4_1.sce b/3830/CH4/EX4.1/Ex4_1.sce
new file mode 100644
index 000000000..25e272882
--- /dev/null
+++ b/3830/CH4/EX4.1/Ex4_1.sce
@@ -0,0 +1,19 @@
+// Exa 4.1

+

+clc;

+clear;

+

+// Given

+

+// An oscilloscope

+

+R = 400; // Resistance(k Ohms)

+C = 0.025; // capacitance(micro Farad)

+T = 0.4; // Time period of saw-tooth output waveform(msec)

+

+// Solution

+

+printf('  The percentage of non linearity i.e deviation in output can be given as t/(4*R*C)\n  ');

+PD = (T*10^-3)/(4*R*10^3*C*10^-6) ;

+

+printf(' Therefore, by calculation, percent deviation = %d percent \n ',PD*100);

diff --git a/3830/CH4/EX4.2/Ex4_2.sce b/3830/CH4/EX4.2/Ex4_2.sce
new file mode 100644
index 000000000..69016bfc6
--- /dev/null
+++ b/3830/CH4/EX4.2/Ex4_2.sce
@@ -0,0 +1,40 @@
+// Exa 4.2

+

+clc;

+clear;

+

+// Given

+

+f = 83.3 ; // frequency of  sinusoidal voltage in KHz

+

+// Solution

+// part a

+

+printf('Being sunchronised, the frequency of the saw-tooth wave will be a submultiple of the signal. \n');

+

+printf(' Frequency of saw-tooth curve = %.2f kHz \n',f/10);

+F = f/10;

+printf(' Period of the saw-tooth curve = %.1f microsec \n',(1/F)*10^3);

+

+// since, Sine wave y = A sin theta

+// but y/A = 0.5(since, end of trace was at position half the amplitide away from x-axis)

+theta = asind(1/2) ;

+printf(' The 10th wave is in short of a complete since wave by %d degrees \n',theta);

+printf(' Therefore, No of full waves of sine form seen on the screen are 9 11/12 waveforms \n');

+

+// Rise time +decay time = period of wave = 120 microsec

+T = 120 ; // period in microsec

+ Rise_by_decay = (119/12) / (10- 119/12);

+DecayTime = Rise_by_decay/T;

+printf(' Decay time = %.1f microsec \n',round(DecayTime));

+printf(' Rise time = %.1f microsec \n',T-DecayTime);

+

+// part b

+

+printf(' Since, increase time base frequency = 10/4 times the final value \n');

+

+L = (10/4)* theta ;

+printf(' Length of trace blanked in degrees due to flyback time = %d degrees \n ',L);

+T_new = T*4/10;

+printf('Period of new time base = %d microsec \n',T_new);

+printf(' Rise time as per new time base = %d microsec \n',T_new-1);

diff --git a/3830/CH4/EX4.3/Ex4_3.sce b/3830/CH4/EX4.3/Ex4_3.sce
new file mode 100644
index 000000000..6604a28fb
--- /dev/null
+++ b/3830/CH4/EX4.3/Ex4_3.sce
@@ -0,0 +1,17 @@
+// Exa 4.3

+

+clc;

+clear;

+

+// Given 

+

+Va = 2500; // Applied voltage(Volts)

+e = 1.602*10^-19; // Charge of electron(C)

+m = 9.107*10^-31; // Mass of electron(Kg)

+

+// Solution

+

+// For Electron beam in the oscilloscope, its velocity is given as-

+V = sqrt(2*e*Va/m);

+

+printf(' The velocity of electron beam of an oscilloscope = %.3f * 10^6 m/sec \n',V/10^6);

diff --git a/3830/CH4/EX4.4/Ex4_4.sce b/3830/CH4/EX4.4/Ex4_4.sce
new file mode 100644
index 000000000..6ddf351ea
--- /dev/null
+++ b/3830/CH4/EX4.4/Ex4_4.sce
@@ -0,0 +1,15 @@
+// Exa 4.4

+

+clc;

+clear;

+

+// Given

+

+Def_sensitivity = 0.05; // Deflection sensitivity in mm/V

+Spot_deflection = 5; // in mm

+

+// Solution

+

+AppliedVoltage = Spot_deflection/Def_sensitivity ;

+

+printf(' The applied voltage = %d V \n',AppliedVoltage);

diff --git a/3830/CH4/EX4.5/Ex4_5.sce b/3830/CH4/EX4.5/Ex4_5.sce
new file mode 100644
index 000000000..063cc090f
--- /dev/null
+++ b/3830/CH4/EX4.5/Ex4_5.sce
@@ -0,0 +1,18 @@
+// Exa 4.5

+

+clc;

+clear;

+

+// Given

+

+// A CRT under consideration

+l = 20; // length of x-deflection plates in mm

+d = 5; // distance between x-deflection plates in mm

+s = 250; // distance between screen and center of plate in mm

+Va = 3000; // applied accelerating voltage in volts

+

+// Solution

+

+Def_sensitivity = l*s/(2*d*Va) ;

+printf(' The deflection sensitivity = %.5f mm/V \n',Def_sensitivity);

+printf('  The deflection factor = %.1f V/mm \n',1/Def_sensitivity);

diff --git a/3830/CH4/EX4.6/Ex4_6.sce b/3830/CH4/EX4.6/Ex4_6.sce
new file mode 100644
index 000000000..42401bbcf
--- /dev/null
+++ b/3830/CH4/EX4.6/Ex4_6.sce
@@ -0,0 +1,29 @@
+// Exa 4.6

+

+clc;

+clear;

+

+// Given

+

+l = 25; // length of x-deflection plates in mm

+d = 1; // distance between x-deflection plates in mm

+s = 200; // distance between screen and centre of plate in mm

+Va = 3000; // applied accelerating voltage in volts

+Lt = 100; // length of trace in mm

+

+// Solution

+

+// Deflection produced = y/Vd = s*l/(2*d*Va)

+

+y = 1/2 *(Lt);

+// Therefore, 

+Vd = 2*d*Va*y/(l*s) ;

+

+Vrms = Vd/sqrt(2) ;

+

+printf(' The Vrms of the applied sinusoidal voltage = %.1f V \n',Vd);

+

+Def_sensitivity = l*s/(2*d*Va) ;

+printf('  The deflection sensitivity = %.5f mm/V \n',Def_sensitivity);

+

+// The answer provided in the textbook is wrong

diff --git a/3830/CH4/EX4.7/Ex4_7.sce b/3830/CH4/EX4.7/Ex4_7.sce
new file mode 100644
index 000000000..8359d25d7
--- /dev/null
+++ b/3830/CH4/EX4.7/Ex4_7.sce
@@ -0,0 +1,20 @@
+// Exa 4.7

+

+clc;

+clear;

+

+// Given

+

+// Two sinusoidal voltage signals are applied to vertical and horizontal plates of CRO

+

+// Solution

+printf('Theta = asin(dvo/DV');

+// Referring fig(a) 

+Theta_a = asind(0) ; // dvo = 0

+printf(' Theta for trace shown in fig(a) = %d degrees\n',Theta_a);

+// Referring fig(b) 

+Theta_b = asind(3/6) ; // dvo = 3 and DV =6

+printf(' Theta for trace shown in fig(b) = %d degrees\n',Theta_b);

+// Referring fig(c) 

+Theta_c = asind(1/1) ; // dvo = DV = 1

+printf(' Theta for trace shown in fig(c) = %d degrees\n',Theta_c);

diff --git a/3830/CH4/EX4.8/Ex4_8.sce b/3830/CH4/EX4.8/Ex4_8.sce
new file mode 100644
index 000000000..df37267b9
--- /dev/null
+++ b/3830/CH4/EX4.8/Ex4_8.sce
@@ -0,0 +1,15 @@
+// Exa 4.8

+

+clc;

+clear;

+

+// Given

+

+// Referring closed Lissajous pattern as shown in fig.

+wx = 2; // no of positive x-peak 

+wy = 3; // no of positive y-peak

+

+// Solution

+

+fy_fx = wy/wx ;

+printf(' Ratio of frequencies between vertical and horizontal signals = %.1f \n',fy_fx);

diff --git a/3830/CH4/EX4.9/Ex4_9.sce b/3830/CH4/EX4.9/Ex4_9.sce
new file mode 100644
index 000000000..068182b3e
--- /dev/null
+++ b/3830/CH4/EX4.9/Ex4_9.sce
@@ -0,0 +1,19 @@
+// Exa 4.9

+

+clc;

+clear;

+

+// Given

+

+// Referring Lissajous pattern shown in figure

+wx = 1 ; // Sum of x-peak pattern

+wy = 2.5; // sum of y-peak pattern

+fx = 3; // frequency of horizontal signal

+

+X = wy/wx ; // X is ratio of fy/fx

+

+// Therefore, fy = 2.5*fx

+

+printf(' Frequency of vertical signal = %.1f kHz \n ',X*fx);

+

+// The answer provided in the textbook is wrong