Added new codeHEADmaster

7 files changed, 161 insertions, 0 deletions

diff --git a/3871/CH4/EX4.1/Ex4_1.sce b/3871/CH4/EX4.1/Ex4_1.sce
new file mode 100644
index 000000000..6f0bd68ef
--- /dev/null
+++ b/3871/CH4/EX4.1/Ex4_1.sce
@@ -0,0 +1,20 @@
+//===========================================================================

+//chapter 4 example 1

+clc;

+clear all;

+

+

+//variable decalartion

+L     =0.4;             //length of the strip in m

+W   = 0.0005;       //width of the strip in m

+t     = 0.00008     //thickness in m

+E    = 1.2*10^10;   //young's modulus  in kg/m**2

+d   = 90;                       //deflection in degrees

+

+//calucaltions

+theta    = %pi/(2);         //deflection in radians

+T        = ((E*W*(t^3))/(12*L*2))*(%pi);		//torque exerted in Kg-m

+

+//result

+

+mprintf("torque exerted  T = %3.2e Kg-m",T);

diff --git a/3871/CH4/EX4.2/Ex4_2.sce b/3871/CH4/EX4.2/Ex4_2.sce
new file mode 100644
index 000000000..240800e10
--- /dev/null
+++ b/3871/CH4/EX4.2/Ex4_2.sce
@@ -0,0 +1,19 @@
+//===========================================================================

+//chapter 4 example 2

+clc;

+clear all;

+

+

+//variable decalartion

+W      = 0.005;              //controlling weight  in Kg

+L      = 0.024;             //length in m

+Td     = 1.05*10**-4;       //deflecting Torque in kg-m

+

+//calculations

+x      = Td/(W*L);

+//Td = W*L*sin(theta)

+theta  = asin(x);

+theta1  =  (theta*180)/(%pi);

+

+//result

+mprintf("deflection = %3.0f °",theta1);

diff --git a/3871/CH4/EX4.3/Ex4_3.sce b/3871/CH4/EX4.3/Ex4_3.sce
new file mode 100644
index 000000000..d3cba3b18
--- /dev/null
+++ b/3871/CH4/EX4.3/Ex4_3.sce
@@ -0,0 +1,31 @@
+//===========================================================================

+//chapter 4 example 3

+

+clc;

+clear all;

+

+

+//variable decalartion

+Smax    = 3.0*10^6;     //maximum stress in kg/m**2

+E       = 1.2*10^10;            //young's modulus  in kg/m**2

+w       = 0.0006;           //width of spring in m

+Td      = 1.2*10^-4;        //deflecting torque in kg-m

+d       = 90;                       //deflection in degrees

+

+//calucaltions

+theta = %pi/(2);        //deflection in radians

+//since T        = ((E*W*(t*3))/(12*L))*theta

+//t^3/l    = (12*Tc)/(E*W*theta)

+Tc            = Td/(2);             //controlling torque of each spring in kg-m

+//x  = t**3/l

+x         = (12*Tc)/((E*w*theta));          //equqation 1

+//y     =l/t   

+y   = (E*theta)/(2*Smax);           //equation 2 

+//by multiplying equations 1 and 2 (x*y =t**2 =z)

+z    = x*y; 

+t    = sqrt(z);             //thickness of spring strip in mm

+l   = y*t;                  //length on m

+

+//result

+mprintf("thickness of spring strip = %3.2f mm",(t*10^3));

+mprintf("\nlength in  = %3.2f m",l);

diff --git a/3871/CH4/EX4.4/Ex4_4.sce b/3871/CH4/EX4.4/Ex4_4.sce
new file mode 100644
index 000000000..8f01e491a
--- /dev/null
+++ b/3871/CH4/EX4.4/Ex4_4.sce
@@ -0,0 +1,23 @@
+//===========================================================================

+//chapter 4 example 4

+clc;

+clear all;

+

+//variable declaration

+theta1   = 90;       //deflection in °

+x             = 0.5;      //I2/I1

+

+//calculations

+//Td  proprtional to I

+//theta   proprtional to I

+theta2    = theta1*(x);  	//deflection for the current equal to the half of the current in spring controlled instrument in  °

+//Tc  proprtional to sin(theta)

+//sin(theta) proprtional to I

+y    = sin((%pi/(2)))

+theta21     = asin(x*y);	//deflection for the current equal to the half of the current in gravity  controlled instrument in  °

+theta22  =  (theta21*180)/(%pi);

+

+//result

+mprintf("deflection for the current equal to the half of the current in spring controlled instrument = %3.2f °",theta2);

+mprintf("\ndeflection for the current equal to the half of the current in gravity  controlled instrument = %3.2f °",theta22);

+

diff --git a/3871/CH4/EX4.5/Ex4_5.sce b/3871/CH4/EX4.5/Ex4_5.sce
new file mode 100644
index 000000000..a83c3e258
--- /dev/null
+++ b/3871/CH4/EX4.5/Ex4_5.sce
@@ -0,0 +1,25 @@
+//===========================================================================

+//chapter 4 example 5

+clc;

+clear all;

+

+

+//variable decelaration

+theta1   = 90;       //deflection in °

+I1          = 10; 

+I2          =5;

+

+//calculations

+//Td  proprtional to I^2

+//Theta   proprtional to I^2

+theta2     = theta1*((I2/(I1))^2);               //deflection for I1 A  spring controlled instrument in  °

+//Tc  proprtional to sin(theta)

+//sin(theta) proprtional to I**2

+

+x   =     (I2/((I1)))

+theta21     = asin(x**2)*(sin(%pi/(2)));    //deflection for I1 A  Gravity  controlled instrument in  °

+theta22  =  (theta21*180)/(%pi);

+

+//result

+mprintf("deflection for I1 A  spring controlled instrument = %3.2f °",theta2);

+mprintf("\ndeflection for I1 A  Gravity  controlled instrument = %3.1f °",theta22);

diff --git a/3871/CH4/EX4.6/Ex4_6.sce b/3871/CH4/EX4.6/Ex4_6.sce
new file mode 100644
index 000000000..22896cc90
--- /dev/null
+++ b/3871/CH4/EX4.6/Ex4_6.sce
@@ -0,0 +1,23 @@
+//===========================================================================

+//chapter 4 example 6

+

+clc;

+clear all;

+

+//Variable declaration

+I1      = 10;		//current in A

+theta1  = 60;          //deflection in   °

+theta2  = 40;          //deflection in   °

+

+

+//calculations

+I2     = (I1)*(theta2/(theta1));		//current in case spring controlled ammeter in A

+x      = sin(((theta2*%pi)/(180)));

+y      = sin((theta1*%pi)/(180));

+I21     = (I1)*(x/y);		//current in case gravity controlled ammeter in A

+

+

+//result

+mprintf("current in case spring controlled ammeter = %3.2f A",I2);

+mprintf("\ncurrent in case gravity controlled ammeter = %3.2f A",I21);

+

diff --git a/3871/CH4/EX4.7/Ex4_7.sce b/3871/CH4/EX4.7/Ex4_7.sce
new file mode 100644
index 000000000..177295b7a
--- /dev/null
+++ b/3871/CH4/EX4.7/Ex4_7.sce
@@ -0,0 +1,20 @@
+//===========================================================================

+//chapter 4 example 7

+

+clc;

+clear all;

+

+

+//variable declaration

+Td     = 1.13*10^-3;        //defelecting torque in Nm

+m     = 5*10^-3;                                             //weight in kg

+g      = 9.81;          //gravity 

+theta   = 60;       //deflection in °

+

+//calculations

+d     = Td/(m*g*sin(((theta*%pi)/(180))));		//distance of the controlling weight from spindle in mm

+

+//result

+mprintf("distance of the controlling weight from spindle = %3.1f mm",(d*10^3));

+

+