From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 371/CH13/EX13.1/13_1.sci | 21 +++++++++++++++++++++
 371/CH13/EX13.2/13_2.sci | 11 +++++++++++
 371/CH13/EX13.3/13_3.sci | 14 ++++++++++++++
 371/CH13/EX13.4/13_4.sci |  7 +++++++
 371/CH13/EX13.5/13_5.sci | 12 ++++++++++++
 371/CH13/EX13.6/13_6.sci | 14 ++++++++++++++
 371/CH13/EX13.7/13_7.sci | 10 ++++++++++
 7 files changed, 89 insertions(+)
 create mode 100755 371/CH13/EX13.1/13_1.sci
 create mode 100755 371/CH13/EX13.2/13_2.sci
 create mode 100755 371/CH13/EX13.3/13_3.sci
 create mode 100755 371/CH13/EX13.4/13_4.sci
 create mode 100755 371/CH13/EX13.5/13_5.sci
 create mode 100755 371/CH13/EX13.6/13_6.sci
 create mode 100755 371/CH13/EX13.7/13_7.sci

(limited to '371/CH13')

diff --git a/371/CH13/EX13.1/13_1.sci b/371/CH13/EX13.1/13_1.sci
new file mode 100755
index 000000000..f83a49c11
--- /dev/null
+++ b/371/CH13/EX13.1/13_1.sci
@@ -0,0 +1,21 @@
+//Choppers and Transportation System Application//
+//Example 13.1//
+E=220;//dc supply voltage in volts//
+El=22;//Load voltage in volts//
+Ton=1000;//conducting period in microseconds//
+T=2500;//Total timeperiod in microseconds//
+L=1;//inductance in milliHenry//
+R=0.25;//resistance in ohms//
+t=L/R;//time constant in milliseconds//
+printf('time constant=t=%fmilliseconds',t);
+A=0.133;
+Td=A*T;//Discontinuous condition starts at//
+printf('\nDiscontinuous condition starts from Td=%fmicroseconds',Td);
+Eo=0.4*E;//output voltage in volts//
+printf('\nOutput voltage=Eo=%fvolts',Eo);
+Iav=(Eo-El)/R;//Average current in amps//
+printf('\nAverage current=Iav=%famp',Iav);
+Imax=((E*(1-exp(-Ton/(t*1000))))/(R*(1-exp(-T/(t*1000)))))-(El/R);
+printf('\nMaximum current=Imax=%famp',Imax);
+Imin=((E*(exp(Ton/(t*1000))-1))/(R*(exp(T/(t*1000))-1)))-(El/R);
+printf('\nMinimum current=Imin=%famp',Imin);
diff --git a/371/CH13/EX13.2/13_2.sci b/371/CH13/EX13.2/13_2.sci
new file mode 100755
index 000000000..e139e2af5
--- /dev/null
+++ b/371/CH13/EX13.2/13_2.sci
@@ -0,0 +1,11 @@
+//Choppers and Transportation System Application//
+//Example 13.2//
+f=1;//operating frequency in KHZ//
+E=220;//dc supply voltage in volts//
+El=165;//Load voltage in volts//
+Ton=El/(E*f);//conduction period in ms//
+printf('Conduction period=Ton=%fms',Ton);
+T=1/f;//total time period in ms//
+printf('\nTotal time period=T=%fms',T);
+Toff=T-Ton;//blocking period in ms//
+printf('\nBlocking period=Toff=%fms',Toff);
\ No newline at end of file
diff --git a/371/CH13/EX13.3/13_3.sci b/371/CH13/EX13.3/13_3.sci
new file mode 100755
index 000000000..3c915c1d4
--- /dev/null
+++ b/371/CH13/EX13.3/13_3.sci
@@ -0,0 +1,14 @@
+//Choppers and Transportation System Application//
+//Example 13.3//
+E=220;//dc supply voltage in volts//
+Toff=200;//blocking period in microseconds//
+Il=50;//load current in amps//
+C=%pi*Toff*Il/(2*E);//capacitance for optimum frequency in microfarad//
+C=75;
+printf('Load capacitance required for optimum frequency=C=%fmicrofarad',C);
+L1=Toff^2*10^-3/C;//inductance required in milliHenry//
+L2=L1;
+printf('\nInductance parameters=L1=L2=%fmilliHenry',L1);
+
+
+
diff --git a/371/CH13/EX13.4/13_4.sci b/371/CH13/EX13.4/13_4.sci
new file mode 100755
index 000000000..f86b3469a
--- /dev/null
+++ b/371/CH13/EX13.4/13_4.sci
@@ -0,0 +1,7 @@
+//Choppers and Transportation System Application//
+//Example 13.4//
+E=220;//dc supply voltage in volts//
+El=660;//Load voltage in volts//
+Toff=100;//blocking period in microseconds//
+Ton=(El/E-1)*Toff;//Conduction period in microseconds//
+printf('Conduction period=Ton=%fmicroseconds',Ton);
\ No newline at end of file
diff --git a/371/CH13/EX13.5/13_5.sci b/371/CH13/EX13.5/13_5.sci
new file mode 100755
index 000000000..f95a757af
--- /dev/null
+++ b/371/CH13/EX13.5/13_5.sci
@@ -0,0 +1,12 @@
+//Choppers and Transportation System Application//
+//Example 13.5//
+f=200;//chopper frequency in HZ//
+E=220;//dc supply voltage in volts//
+Iav=100;//Average current in the circuit in amps//
+Ra=0.02;//Armature resistance in ohms//
+Rf=0.01;//Field resistance in ohms//
+Ebav=50;//Average value of the Back emf in volts//
+Eav=Iav*(Ra+Rf)+Ebav;//Average voltage in the circuit in volts//
+printf('Average voltage in the circuit=Eav=%fvolts',Eav);
+Ton=Eav*1000/(E*f);//conduction period in ms//
+printf('\nConduction period=Ton=%fms',Ton);
diff --git a/371/CH13/EX13.6/13_6.sci b/371/CH13/EX13.6/13_6.sci
new file mode 100755
index 000000000..0e16d27a4
--- /dev/null
+++ b/371/CH13/EX13.6/13_6.sci
@@ -0,0 +1,14 @@
+//Choppers and Transportation System Application//
+//Example 13.6//
+f=200;//chopper frequency in HZ//
+T=1000/f;//total time period in ms//
+Toff=4;//Blocking period in ms//
+Ton=T-Toff;//conduction period in ms//
+R1=2;//R1 in ohms//
+R2=4;//R2 in ohms//
+R=((R1*Ton)+(R1+R2)*Toff)/T;//rotor resistance referred to stator in ohms//
+printf('Rotor resistance referred to stator=R=%fohms',R);
+V=415;//stator voltage in volts//
+s=0.02;//slip of the motor//
+MT=V^2*s/R;//motor torque in Syn. Watts//
+printf('\nMotor torque=MT=%fSnc. Watts',MT);
\ No newline at end of file
diff --git a/371/CH13/EX13.7/13_7.sci b/371/CH13/EX13.7/13_7.sci
new file mode 100755
index 000000000..76d160230
--- /dev/null
+++ b/371/CH13/EX13.7/13_7.sci
@@ -0,0 +1,10 @@
+//Choppers and Transportation System Application//
+//Example 13.7//
+//R1=rotor resistance before introduction of control//
+//R2=rotor resistance after introduction of control//
+printf('R2=1.5*R1');
+R2=((R1*Ton)+(R1+R1)*Toff)/T;//rotor resistance referred to stator in ohms//
+printf('\nthe above condition satisfies when Ton=Toff');
+T=4;//total time period in ms//
+f=1000/T;//chopper frequency in hz//
+printf('\nChopper frequency=f=%fhz',f);
\ No newline at end of file
-- 
cgit