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-rw-r--r--3871/CH8/EX8.1/Ex8_1.sce17
-rw-r--r--3871/CH8/EX8.10/Ex8_10.sce25
-rw-r--r--3871/CH8/EX8.11/Ex8_11.sce25
-rw-r--r--3871/CH8/EX8.2/Ex8_2.sce24
-rw-r--r--3871/CH8/EX8.3/Ex8_3.sce19
-rw-r--r--3871/CH8/EX8.4/Ex8_4.sce21
-rw-r--r--3871/CH8/EX8.5/Ex8_5.sce18
-rw-r--r--3871/CH8/EX8.6/Ex8_6.sce21
-rw-r--r--3871/CH8/EX8.7/Ex8_7.sce19
-rw-r--r--3871/CH8/EX8.8/Ex8_8.sce20
-rw-r--r--3871/CH8/EX8.9/Ex8_9.sce19
11 files changed, 228 insertions, 0 deletions
diff --git a/3871/CH8/EX8.1/Ex8_1.sce b/3871/CH8/EX8.1/Ex8_1.sce
new file mode 100644
index 000000000..dfbcea5c3
--- /dev/null
+++ b/3871/CH8/EX8.1/Ex8_1.sce
@@ -0,0 +1,17 @@
+//===========================================================================
+//chapter 8 example 1
+
+clc;clear all;
+
+//variable declaration
+P = 360; //power in W
+t = 100; //time in seconds
+n = 10; //revolutions
+
+//calculations
+E = (P*(t/(3600)))/(1000); //energy consumed in kWh
+M = n/(E); //meter constant in revolutions/KWh
+
+//result
+mprintf("meter constant in revolutions/KWh = %3.2f ",M);
+
diff --git a/3871/CH8/EX8.10/Ex8_10.sce b/3871/CH8/EX8.10/Ex8_10.sce
new file mode 100644
index 000000000..d264b82df
--- /dev/null
+++ b/3871/CH8/EX8.10/Ex8_10.sce
@@ -0,0 +1,25 @@
+//===========================================================================
+//chapter 8 example 10
+
+clc;clear all;
+
+//variable declaration
+V = 230; //voltage in V
+I = 10; //current in A
+T = 30; //time in minutes
+x =0.8; //power factor
+n = 890; //number of revolutions made
+M = 1200; //meter constant in revolutions per kWh
+E = 58.25; //dial reading at the end of test
+E1 = 57.35; //dial reading at the start of test
+
+//calculations
+Ea = (V*I*(T/(60))*x)/(1000); //Energy consumed 1 minute
+Em = E-E1; //energy consumption recorded by the meter in kWh
+e = Em-Ea; //error in registration in kWh
+N = M*Em; //actual revolutions required to be made by the meter for an energy consumption of 0.90kWh
+e = (n-N)/(T); //error in rpm
+
+//result
+mprintf("error = %3.2f rpm",e);
+
diff --git a/3871/CH8/EX8.11/Ex8_11.sce b/3871/CH8/EX8.11/Ex8_11.sce
new file mode 100644
index 000000000..9dab573f3
--- /dev/null
+++ b/3871/CH8/EX8.11/Ex8_11.sce
@@ -0,0 +1,25 @@
+//===========================================================================
+//chapter 8 example 11
+
+clc;clear all;
+
+ //variable declaration
+V = 230; //voltage in volts
+I = 4; //current in A
+I1 = 5; //current in A
+cosphi = 1; //power factor
+h = 6; //hours
+R = 2208; //revolutios made by meter
+R1 = 1472; //revolutios made by meter
+E1 = 400; //energy consumption
+h1 =4;
+
+//calculations
+E = (V*I*cosphi*h)/(1000); //energy consumption in kWh
+M = R/(E); //meter constant in rev/kWh
+cosphi2 = (R1/(E1)*(1000/(V*I1*h1))); //power factor of the load is cosphi2 for second measuremnet
+
+//result
+mprintf("meter constant = %3.2f revolutions/kWhr",M);
+mprintf("\npower factor of the load is cosphi2 for second measuremnet = %3.2f",cosphi2);
+
diff --git a/3871/CH8/EX8.2/Ex8_2.sce b/3871/CH8/EX8.2/Ex8_2.sce
new file mode 100644
index 000000000..46b4b9091
--- /dev/null
+++ b/3871/CH8/EX8.2/Ex8_2.sce
@@ -0,0 +1,24 @@
+//===========================================================================
+//chapter 8 example 2
+
+
+clc;clear all;
+
+//variable declaration
+V = 220; //voltage in V
+I = 5; //current in A
+Rp = 8800; //resistance of pressure in Ω
+V1 = 6; //voltage excited in V
+
+//calculations
+P1 = V*I; //power consumed in current coil circuit in W
+P2 = (V^2)/(Rp); //power consumed in pressure coil circuit in W
+P = P1+P2; //total power consumed in W
+P11 = V1*I; //power consumed in current coil circuit in W
+P21 = (V^2)/(Rp); //power consumed in pressure coil circuit in W
+PP = P11+P21; //total power consumed in W
+
+//result
+mprintf("total power consumed for direct load arrangement = %3.2f W",P);
+mprintf("\ntotal power consumed for phanton loading with current circuit = %3.1f W",PP);
+
diff --git a/3871/CH8/EX8.3/Ex8_3.sce b/3871/CH8/EX8.3/Ex8_3.sce
new file mode 100644
index 000000000..5221ec15f
--- /dev/null
+++ b/3871/CH8/EX8.3/Ex8_3.sce
@@ -0,0 +1,19 @@
+//===========================================================================
+//chapter 8 example 3
+
+clc;clear all;
+
+//variable declaration
+T = 0.5; //time in hours
+V = 220; //voltage in V
+I = 5; //current in A
+P = 525; //consumption registered in Wh
+P1 =0.525; //consumption registered in kWh
+
+//calculations
+
+E = ((V*I)/(1000))*T; //energy consumed in kWh
+e = ((P1-E)/(E))*100; //percentage error in %
+
+//result
+mprintf("percentage error = %3.2f percentage(slow) ",e);
diff --git a/3871/CH8/EX8.4/Ex8_4.sce b/3871/CH8/EX8.4/Ex8_4.sce
new file mode 100644
index 000000000..f7366c986
--- /dev/null
+++ b/3871/CH8/EX8.4/Ex8_4.sce
@@ -0,0 +1,21 @@
+//===========================================================================
+//chapter 8 example 4
+
+
+clc;clear all;
+
+//variable declaration
+M1 = 5; //meter constant in A-s/rev
+V = 250; //voltage in V
+t = 60; //time in minute
+
+//calculations
+M2 = M1*V; //meter constant in W-s/rev with rated voltage of 250V
+M3 = M2/(1000*3600); //meter constant in kWh/rev
+M = 1/(M3); //meter constant in rev/kWh
+E = (M2/(t*1000)); //energy consumed in 1 minute at full-load
+S = M*E; //full-load speed in rpm
+
+//result
+mprintf("meter constant in revolutions per kWh = %3.2d",M);
+mprintf("\nfull-load speed = %3.2d rpm",S);
diff --git a/3871/CH8/EX8.5/Ex8_5.sce b/3871/CH8/EX8.5/Ex8_5.sce
new file mode 100644
index 000000000..737709ff2
--- /dev/null
+++ b/3871/CH8/EX8.5/Ex8_5.sce
@@ -0,0 +1,18 @@
+//===========================================================================
+//chapter 8 example 5
+
+clc;clear all;
+
+//variable declaration
+n = 15; //number of revolutions made
+M = 750; //meter constant in revolutions per kWh
+T = 30; //time in seconds
+
+//calculations
+E = n/(M); //Energy consumed in 30 seconds
+L = (E*3600)/T; //load in kW
+
+//result
+mprintf("Energy consumed in 30 seconds = %3.2f kWh",E);
+mprintf("\nLoad = %3.2f kW",L);
+
diff --git a/3871/CH8/EX8.6/Ex8_6.sce b/3871/CH8/EX8.6/Ex8_6.sce
new file mode 100644
index 000000000..c3d3d1ac5
--- /dev/null
+++ b/3871/CH8/EX8.6/Ex8_6.sce
@@ -0,0 +1,21 @@
+//===========================================================================
+//chapter 8 example 6
+
+
+clc;clear all;
+
+//variable declaration
+M = 500; //meter constant in revolutions per kWh
+n = 40; //number of revolutions made
+T1 = 58.1; //time in seconds
+P = 5; //power in kW
+
+//calculations
+x =P*T1;
+E =(x/3600); //Energy consumed in 58.1 seconds
+E1 = n/(M); //energy consumption registeredin kWh
+e = ((E1-E)/E)*100; //percentage error in %
+
+//result
+mprintf("percentage error = %3.2f percentage",e);
+
diff --git a/3871/CH8/EX8.7/Ex8_7.sce b/3871/CH8/EX8.7/Ex8_7.sce
new file mode 100644
index 000000000..583598b19
--- /dev/null
+++ b/3871/CH8/EX8.7/Ex8_7.sce
@@ -0,0 +1,19 @@
+//===========================================================================
+//chapter 8 example 7
+clc;clear all;
+
+//variable declaration
+V = 230; //voltage in V
+I = 4.4; //current in A
+T = 3; //time in minutes
+x =1; //cos(0)=1
+n = 10; //number of revolutions made
+M = 200; //meter constant in revolutions per kWh
+
+//calculations
+E = (V*I*(T/(60))*x)/(1000); //Energy consumed i3 minutes
+E1 = n/(M); //energy consumption registeredin kWh
+e = ((E1-E)/(E))*100; //percentage error in %
+
+//result
+mprintf("percentage error = %3.3f percentage",e);
diff --git a/3871/CH8/EX8.8/Ex8_8.sce b/3871/CH8/EX8.8/Ex8_8.sce
new file mode 100644
index 000000000..26999cb01
--- /dev/null
+++ b/3871/CH8/EX8.8/Ex8_8.sce
@@ -0,0 +1,20 @@
+//===========================================================================
+//chapter 8 example 8
+
+clc;clear all;
+
+//variable declaration
+L = 1; //Load in kW
+S = 10.2; //speed of the disc in rpm
+T1 = 12; //time in hours
+M = 600; //meter constant in revolutions per kWh
+
+//calculations
+T2 = T1*60; //time in minutes
+E = L*T1; //actual energy consumed in 12 hours in kWh
+N = S*T2; //Revolutions made by the disc in 12 hours
+E1 = N/(M); //Energy consumption recorded by the meter
+e = E1-E; //error in kWh
+
+//result
+mprintf("error = %3.2f kWh more",e);
diff --git a/3871/CH8/EX8.9/Ex8_9.sce b/3871/CH8/EX8.9/Ex8_9.sce
new file mode 100644
index 000000000..b2215336b
--- /dev/null
+++ b/3871/CH8/EX8.9/Ex8_9.sce
@@ -0,0 +1,19 @@
+//===========================================================================
+//chapter 8 example 9
+
+clc;clear all;
+
+//variable declaration
+
+V = 240; //voltage in V
+I = 8; //current in A
+T = 1; //time in minutes
+x =0.6; //power factor
+M = 600; //meter constant in revolutions per kWh
+
+//calculations
+E = (V*I*(T/(60))*x)/(1000); //Energy consumed 1 minute
+S = E*M; //speed of the disc in rev/minute
+
+//result
+mprintf("speed of the disc = %3.2f rev/minute",S);
generated by cgit (git 2.34.1) at 2025-03-08 08:17:15 +0000