initial commit / add all books

15 files changed, 221 insertions, 0 deletions

diff --git a/2192/CH7/EX7.1/7_1.sce b/2192/CH7/EX7.1/7_1.sce
new file mode 100755
index 000000000..71548e906
--- /dev/null
+++ b/2192/CH7/EX7.1/7_1.sce
@@ -0,0 +1,13 @@
+clc,clear
+printf('Example 7.1\n\n')
+
+Z=0.0003295 //electrochemical equivalent of copper
+I=1 //current strength
+T=100*60 //time in seconds
+W= Z*I*T //weight of nickel deposited
+D=8.9 //density of nickel
+V=W/D //volume of nickel deposited
+A=2.25 //area of plate
+t=V/A //thickness of deposit
+
+printf('Thickness of copper deposited = %.4f cm',t)
diff --git a/2192/CH7/EX7.10/7_10.sce b/2192/CH7/EX7.10/7_10.sce
new file mode 100755
index 000000000..89f3c178a
--- /dev/null
+++ b/2192/CH7/EX7.10/7_10.sce
@@ -0,0 +1,13 @@
+clc,clear

+printf('Example 7.10\n\n')

+

+CE_Cu=32.8; CE_H=1//chemical equivalents

+ECE_H =0.01044*10^-3    //electrochemical equivalents

+ECE_Cu = ECE_H * (CE_Cu/CE_H) 

+

+//copper

+T=1*60*60 //time in seconds

+I=40

+m=ECE_Cu *I*T

+

+printf('Weight of deposited copper = %.2f grams',m)

diff --git a/2192/CH7/EX7.11/7_11.sce b/2192/CH7/EX7.11/7_11.sce
new file mode 100755
index 000000000..dd9543d88
--- /dev/null
+++ b/2192/CH7/EX7.11/7_11.sce
@@ -0,0 +1,15 @@
+clc,clear

+printf('Example 7.11\n\n')

+

+ECE_Cu = 0.327*10^-6*3600*1000 //in kg per 1000 Ah

+

+//400 cells, 5000 A , 100 hours per week, 52 weeks

+ampere_hours_per_annum=400*5000*100*52

+

+annual_output = ECE_Cu*ampere_hours_per_annum/(1000*1000) //in tonnes

+printf('Annual output of refined copper = %.0f tonnes',annual_output)

+V=0.25 //voltage per cell

+energy_per_annum=ampere_hours_per_annum*V/1000 //in kWh

+

+energy_consumpt_per_ton=energy_per_annum/ annual_output 

+printf('\nEnergy consumption per tonne= %f kWh/tonne',energy_consumpt_per_ton)

diff --git a/2192/CH7/EX7.12/7_12.sce b/2192/CH7/EX7.12/7_12.sce
new file mode 100755
index 000000000..840a24071
--- /dev/null
+++ b/2192/CH7/EX7.12/7_12.sce
@@ -0,0 +1,17 @@
+clc,clear

+printf('Example 7.12\n\n')

+

+//nickel

+m=18.528*10^-3 //weight of nickel

+I=100 //current in amperes

+T=10*60 //time in seconds

+ECE_Ni=m/(I*T) //in kg/C

+

+//copper

+I_Cu=50

+T_Cu=6*60

+CE_Cu=63.18; CE_Ni=58.6;//chemical equivalents

+ECE_Cu= ECE_Ni*((CE_Cu/2)/(CE_Ni/2)) //bothare bivalent

+m_Cu= ECE_Cu * I_Cu*T_Cu 

+

+printf('Weight of copper deposited = %f grams',1000*m_Cu)

diff --git a/2192/CH7/EX7.13/7_13.sce b/2192/CH7/EX7.13/7_13.sce
new file mode 100755
index 000000000..574d28f99
--- /dev/null
+++ b/2192/CH7/EX7.13/7_13.sce
@@ -0,0 +1,14 @@
+clc,clear

+printf('Example 7.13\n\n')

+

+CE_Ag=107.98; CE_Al=27/3; //chemical equivalents

+

+//Electrochemical equivalents

+ECE_Ag=0.00111*10^-3 //in kg/C

+ECE_Al=ECE_Ag * (CE_Al/CE_Ag)

+

+current_efficiency=92/100

+I=3000 //average current in A

+t=24*3600 //duration of flow of current in seconds

+m_al=ECE_Al*I*t*current_efficiency 

+printf('Mass of aluminium produced = %.3f kg',m_al)

diff --git a/2192/CH7/EX7.14/7_14.sce b/2192/CH7/EX7.14/7_14.sce
new file mode 100755
index 000000000..59eb83792
--- /dev/null
+++ b/2192/CH7/EX7.14/7_14.sce
@@ -0,0 +1,14 @@
+clc,clear

+printf('Example 7.14\n\n')

+

+ECE_Cu=0.3281*10^-6 *3600//in kg/Ah

+

+//500 cells, 6000 A, 40 hours per week, 52 weeks

+ampere_hours_per_annum=500*6000*40*52

+annual_output= ECE_Cu*ampere_hours_per_annum/1000 //in tonnes

+

+V=0.25 //voltage per cell

+energy_consumd_per_annum= ampere_hours_per_annum * V/1000 //in kWh

+energy_consumtn_per_ton=energy_consumd_per_annum/ annual_output

+

+printf('Energy consumption per tonne = %.2f kWh/tonne', energy_consumtn_per_ton)

diff --git a/2192/CH7/EX7.15/7_15.sce b/2192/CH7/EX7.15/7_15.sce
new file mode 100755
index 000000000..9d955642a
--- /dev/null
+++ b/2192/CH7/EX7.15/7_15.sce
@@ -0,0 +1,21 @@
+clc,clear

+printf('Example 7.15\n\n')

+

+diameter_shaft = 14

+length_shaft=30

+Surface_area_shaft =%pi* length_shaft * diameter_shaft

+

+thickness_coating = 1.5/10

+density_Ni= 8.9

+Mass_Ni= Surface_area_shaft * thickness_coating*density_Ni

+

+ECE_Ni=0.000304 //gram/C

+electricity_required= Mass_Ni/ECE_Ni

+printf('Theoritical value of electricity required = %.1f Amp-hour\n',electricity_required/3600)

+

+current_density=200*10^-4 //in A/cm^2

+current=  current_density* Surface_area_shaft 

+printf('Theoritical value of current required = %.1f A\n',current)

+Time_required= electricity_required / current

+

+printf('Time required = %.0f hours',Time_required/3600)

diff --git a/2192/CH7/EX7.2/7_2.sce b/2192/CH7/EX7.2/7_2.sce
new file mode 100755
index 000000000..1b6be0420
--- /dev/null
+++ b/2192/CH7/EX7.2/7_2.sce
@@ -0,0 +1,9 @@
+clc,clear

+printf('Example 7.2\n\n')

+

+I=10 //strength of current

+T=20*60 //time of flow of current in seconds

+W=13.42 //weight of silver deposited in grams

+Z= W/(I*T) //Electrochemical equivalent of silver

+

+printf('Electrochemical equivalent of silver = %.6f g/coulomb',Z)

diff --git a/2192/CH7/EX7.3/7_3.sce b/2192/CH7/EX7.3/7_3.sce
new file mode 100755
index 000000000..130030b9f
--- /dev/null
+++ b/2192/CH7/EX7.3/7_3.sce
@@ -0,0 +1,10 @@
+clc,clear

+printf('Example 7.3\n\n')

+

+W=5 //weight of copper to be deposited

+Z=0.3294*10^-3 //ECE of copper

+Q=W/Z //quantity of electricity required

+T=1*60*60 //time of deposit

+I=Q/T //steady current required

+

+printf('Required steady current = %.3f A',I)

diff --git a/2192/CH7/EX7.4/7_4.sce b/2192/CH7/EX7.4/7_4.sce
new file mode 100755
index 000000000..66528ad80
--- /dev/null
+++ b/2192/CH7/EX7.4/7_4.sce
@@ -0,0 +1,19 @@
+clc,clear

+printf('Example 7.4')

+

+D=8.6 //density of nickel in gram/cm^3

+Z= 0.000304 //Electrochemical equivalent of silver in gram/coulomb

+I=4.3 //steady current passed in amperes

+

+//Volume=length*breadth*height

+V_initial =5*4*1 //volume before electroplating

+V_final= 5.02*4.02*1.02 //volume after electroplating

+V_nickel=V_final-V_initial //volume of nickel deposited

+

+W= V_nickel * D  //weight of nickel deposited

+T = (W/(I*Z))/3600  //Time taken in hours

+

+printf('Time taken for deposition = %.0f seconds\n\n',3600*T)

+printf('=%.0f hours %.0f minutes %.0f seconds',T,(T-1)*60,((T-1)*60 - 4)*60)

+

+printf('\n\nAnswer may not match because of calculation mistake done in seconds to <hours,minute,second> conversion')

diff --git a/2192/CH7/EX7.5/7_5.sce b/2192/CH7/EX7.5/7_5.sce
new file mode 100755
index 000000000..62df85bdb
--- /dev/null
+++ b/2192/CH7/EX7.5/7_5.sce
@@ -0,0 +1,17 @@
+clc,clear

+printf('Example 7.5\n\n')

+

+D= 8.9 //density of nickel

+A=200 //area of plate

+thickness=0.2/10 //thicknes of coating

+V=200*thickness //volume of material to be plated

+W= V* D //weight of material to be deposited

+Z= 0.0003043 //Electrochemical equivalent of nickel

+Q = W / (Z*90/100)  //Q is quantity of electricity

+printf('Quantity of electricity = %.1f A-hr\n',Q/3600)

+

+current_density = 190*10^-4 //current density in A/ cm^2

+current =  current_density *A

+T=Q /current  //time taken

+printf('Time taken = %f seconds\n',T)

+printf('or <%d hours,%d minutes,%d seconds>',T/3600,60*((T/3600)- floor(T/3600) ) , 60*((60*((T/3600)- floor(T/3600) ) )-floor(60*((T/3600)- floor(T/3600) ) )))

diff --git a/2192/CH7/EX7.6/7_6.sce b/2192/CH7/EX7.6/7_6.sce
new file mode 100755
index 000000000..f855bb65c
--- /dev/null
+++ b/2192/CH7/EX7.6/7_6.sce
@@ -0,0 +1,14 @@
+clc,clear

+printf('Example 7.6\n\n')

+

+m=32 //mass of deposit

+Q=96500 //quantity of electricity 

+Z=m/Q //electrochemical equivalent

+

+m1=20*10^-3

+Q1= m1* (Q/m)

+

+I=0.15 //steady current

+T=Q1/I//time taken to deposit 20 milli-gram

+printf('Time taken = %f seconds\n',T)

+printf('or <%d hours,%d minutes,%d seconds>',T/3600,60*((T/3600)- floor(T/3600) ) , 60*((60*((T/3600)- floor(T/3600) ) )-floor(60*((T/3600)- floor(T/3600) ) )))

diff --git a/2192/CH7/EX7.7/7_7.sce b/2192/CH7/EX7.7/7_7.sce
new file mode 100755
index 000000000..46638b15a
--- /dev/null
+++ b/2192/CH7/EX7.7/7_7.sce
@@ -0,0 +1,17 @@
+clc,clear

+printf('Example 7.7\n\n')

+

+

+SA_cylinder=%pi*(20/100)*(30/100) //total surface are of cylinder

+thickness=1 //thickness of nickel coating

+Volume = SA_cylinder *thickness

+Density = 8.9//density of Nickel 

+Mass= Density * Volume

+

+Z=0.000304 //electrochemical equivalent of nickel

+T=2*60*60 //rime in seconds

+I = Mass/(Z*T) //current

+

+volts=10

+Energy=volts*I*T /(1000*3600) //energy consumed in 2 hours

+printf('Electrical energy used = %f kWh',Energy)

diff --git a/2192/CH7/EX7.8/7_8.sce b/2192/CH7/EX7.8/7_8.sce
new file mode 100755
index 000000000..6268cd623
--- /dev/null
+++ b/2192/CH7/EX7.8/7_8.sce
@@ -0,0 +1,11 @@
+clc,clear

+printf('Example 7.8\n\n')

+

+m=0.322 //mass of deposit in grams

+T=10*60 //time in seconds 

+Z=1.118*10^-3 //Electrochemical equivalent

+

+I=m/(T*Z)

+ammeter_reading=0.60

+ammeter_error= ammeter_reading - I

+printf('Ammeter error = %.2f A',ammeter_error)

diff --git a/2192/CH7/EX7.9/7_9.sce b/2192/CH7/EX7.9/7_9.sce
new file mode 100755
index 000000000..558fd896f
--- /dev/null
+++ b/2192/CH7/EX7.9/7_9.sce
@@ -0,0 +1,17 @@
+clc,clear

+printf('Example 7.9\n\n')

+

+SA_plate= 2.54^2

+thickness= 0.05 //thickness of deposit

+density=9 //density of nickel

+W=SA_plate*thickness*density //masss of deposit

+

+CE_Ni=59; CE_Ag=108; //chemical equivalents

+ECE_Ag=0.001118 //electrochemical equivalents

+ECE_Ni = ECE_Ag*((CE_Ni/2)/CE_Ag) //valancy of Ni is 2

+

+I=20

+T=W/(ECE_Ni*I)

+printf('Time taken for deposition = %.0f seconds\n',T)

+printf('or <%d hours,%d minutes,%d seconds>',T/3600,60*((T/3600)- floor(T/3600) ) , 60*((60*((T/3600)- floor(T/3600) ) )-floor(60*((T/3600)- floor(T/3600) ) )))

+