diff options
Diffstat (limited to '3813/CH4')
30 files changed, 326 insertions, 0 deletions
diff --git a/3813/CH4/EX4.1/Ex4_1.jpg b/3813/CH4/EX4.1/Ex4_1.jpg Binary files differnew file mode 100644 index 000000000..a5c3988f3 --- /dev/null +++ b/3813/CH4/EX4.1/Ex4_1.jpg diff --git a/3813/CH4/EX4.1/Ex4_1.sce b/3813/CH4/EX4.1/Ex4_1.sce new file mode 100644 index 000000000..59771cf31 --- /dev/null +++ b/3813/CH4/EX4.1/Ex4_1.sce @@ -0,0 +1,15 @@ +//Electric Drives:concepts and applications by V.subrahmanyam
+//Publisher:Tata McGraw-Hill
+//Edition:Second
+//Ex4_1
+clc;
+clear;
+Eb=50;// voltage in V
+V=120;// voltage in V
+f=50;//frequency in Hz
+R=10;// Resistance in ohm
+a=asin(Eb/(sqrt(2)*V));
+Alpha=(a*180)/%pi;
+pf=0.9556;
+Iavg=(1/(2*%pi*R))*((2*sqrt(2)*V*pf)-(Eb*(%pi-(2*Alpha))));
+disp(Iavg,"Current Iavg in A is:")
diff --git a/3813/CH4/EX4.10/Ex4_10.jpg b/3813/CH4/EX4.10/Ex4_10.jpg Binary files differnew file mode 100644 index 000000000..2b012f4cd --- /dev/null +++ b/3813/CH4/EX4.10/Ex4_10.jpg diff --git a/3813/CH4/EX4.10/Ex4_10.sce b/3813/CH4/EX4.10/Ex4_10.sce new file mode 100644 index 000000000..80fcae322 --- /dev/null +++ b/3813/CH4/EX4.10/Ex4_10.sce @@ -0,0 +1,15 @@ +//Electric Drives:concepts and applications by V.subrahmanyam
+//Publisher:Tata McGraw-Hill
+//Edition:Second
+//Ex4_10
+clc;
+clear;
+V=500;// voltage in V
+I=15;//Current in A
+t=0.6;//time in sec
+f=80;//frequency in Hz
+Vav=V*t;
+Vi=V-Vav;
+Ton=t/f;
+L=Vi*(Ton/I);
+disp(L,"The inductance in Henry is:")
diff --git a/3813/CH4/EX4.12/Ex4_12.jpg b/3813/CH4/EX4.12/Ex4_12.jpg Binary files differnew file mode 100644 index 000000000..da9f6686c --- /dev/null +++ b/3813/CH4/EX4.12/Ex4_12.jpg diff --git a/3813/CH4/EX4.12/Ex4_12.sce b/3813/CH4/EX4.12/Ex4_12.sce new file mode 100644 index 000000000..33ed900d3 --- /dev/null +++ b/3813/CH4/EX4.12/Ex4_12.sce @@ -0,0 +1,20 @@ +//Electric Drives:concepts and applications by V.subrahmanyam
+//Publisher:Tata McGraw-Hill
+//Edition:Second
+//Ex4_12
+clc;
+clear;
+V=460;// voltage in V
+N1=1200;//Speed in rpm
+N2=1000;//Speed in rpm
+r1=0.06;// Resistance in ohm
+r2=0.32;// Resistance in ohm
+x1=2.16;//Reactance in ohm
+x2=0.48;//Reactance in ohm
+x=0.6*%i;//Reactance in ohm
+xm=8*%i;//Reactance in ohm
+S1=(N1-N2)/N1;
+Z=(xm+(x1+x))/(x1+xm+x);
+[M, P] = polar(Z);
+M * exp(%i * P);
+disp(Z,"z:")
diff --git a/3813/CH4/EX4.14/Ex4_14.jpg b/3813/CH4/EX4.14/Ex4_14.jpg Binary files differnew file mode 100644 index 000000000..5123d623d --- /dev/null +++ b/3813/CH4/EX4.14/Ex4_14.jpg diff --git a/3813/CH4/EX4.14/Ex4_14.sce b/3813/CH4/EX4.14/Ex4_14.sce new file mode 100644 index 000000000..8f60f09a3 --- /dev/null +++ b/3813/CH4/EX4.14/Ex4_14.sce @@ -0,0 +1,19 @@ +//Electric Drives:concepts and applications by V.subrahmanyam
+//Publisher:Tata McGraw-Hill
+//Edition:Second
+//Ex4_14
+clc;
+clear;
+V=440;// voltage in V
+R1=0.07;// Resistance in ohm
+R2=0.05;// Resistance in ohm
+X=0.2;//Reactance in ohm
+N=1420;//Speed in rpm
+Xm=20;//Reactance in ohm
+S1=80;//slip in rpm
+S2=500;//slip in rpm
+Ra=((S2/S1)*R2)-R2;
+R=2*Ra;
+Ra1=4*R2;
+T=(Ra1*2)/R;
+disp(T,"The time ratio is:")
diff --git a/3813/CH4/EX4.15/Ex4_15.jpg b/3813/CH4/EX4.15/Ex4_15.jpg Binary files differnew file mode 100644 index 000000000..d7d20e7ac --- /dev/null +++ b/3813/CH4/EX4.15/Ex4_15.jpg diff --git a/3813/CH4/EX4.15/Ex4_15.sce b/3813/CH4/EX4.15/Ex4_15.sce new file mode 100644 index 000000000..d56835571 --- /dev/null +++ b/3813/CH4/EX4.15/Ex4_15.sce @@ -0,0 +1,23 @@ +//Electric Drives:concepts and applications by V.subrahmanyam
+//Publisher:Tata McGraw-Hill
+//Edition:Second
+//Ex4_15
+clc;
+clear;
+P=1000;
+N=1500;//Speed in rpm
+R2=0.06;// Resistance in ohm
+I2=125.6;//Current in A
+T=1.5;//Time in sec
+N1=1420;//Speed in rpm
+S=(R2*P)/N;
+K=((S/(2*%pi*N))*(I2)^2*T)/(N1)^2;
+T1=K*(N1)^2;
+N2=750;//Speed in rpm
+S0=0.489;//No load slip
+S2=1.12;//load slip
+T2=K*(N2)^2;
+X1=(T2*S)/T1;
+A=acos(-S0/S2);
+Alpha=(A*180)/%pi;
+disp(Alpha,"The firing angle in deg is:")
diff --git a/3813/CH4/EX4.19/Ex4_19.jpg b/3813/CH4/EX4.19/Ex4_19.jpg Binary files differnew file mode 100644 index 000000000..a39b1155a --- /dev/null +++ b/3813/CH4/EX4.19/Ex4_19.jpg diff --git a/3813/CH4/EX4.19/Ex4_19.sce b/3813/CH4/EX4.19/Ex4_19.sce new file mode 100644 index 000000000..5de12a551 --- /dev/null +++ b/3813/CH4/EX4.19/Ex4_19.sce @@ -0,0 +1,33 @@ +//Electric Drives:concepts and applications by V.subrahmanyam
+//Publisher:Tata McGraw-Hill
+//Edition:Second
+//Ex4_19
+clc;
+clear;
+V=400;// voltage in V
+R1=10;// Resistance in ohm
+R2=5;// Resistance in ohm
+X1=2.6*%i;//Reactance in ohm
+X2=2.4*%i;//Reactance in ohm
+Xm=36.4*%i;//Reactance in ohm
+Z=0.06;//zigma value
+C=486;//constant
+F4=2.5;//frequency in Hz
+F2=25;//frequency in Hz
+Z1=(1+X1)+((Xm*(R1+X2))/(R1+X2+Xm));
+[M, P] = polar(Z1);
+M * exp(%i * P);
+Ieff1=sqrt(1+(M/(Z*Xm))^2*(((R2*(%pi)^4)/C)-1));
+disp(Ieff1,"The rms value of current I1 in A:")
+Z2=(1+(X1/2))+(((Xm/2)*((R1/2)+(X2/2)))/((R1/2)+X2+(Xm/2)));
+[M, P] = polar(Z2);
+M * exp(%i * P);
+Ieff2=sqrt(1+(M/(Z*(Xm/2)))^2*(((R2*(%pi)^4)/C)-1));
+disp(Ieff2,"The rms value of current I2 in A:")
+S=(F4/F2);
+Z3=(1+(X1*S))+(((Xm*S)*((R1*S)+(X2*S)))/((R1*S)+(X2*S)+(Xm*S)));
+[M, P] = polar(Z3);
+M * exp(%i * P);
+Ieff3=sqrt(1+(M/(Z*(Xm*S)))^2*(((R2*(%pi)^4)/C)-1));
+disp(Ieff3,"The rms value of current I3 in A:")
+
diff --git a/3813/CH4/EX4.20/Ex4_20.jpg b/3813/CH4/EX4.20/Ex4_20.jpg Binary files differnew file mode 100644 index 000000000..cf9a9bf4e --- /dev/null +++ b/3813/CH4/EX4.20/Ex4_20.jpg diff --git a/3813/CH4/EX4.20/Ex4_20.sce b/3813/CH4/EX4.20/Ex4_20.sce new file mode 100644 index 000000000..735e05895 --- /dev/null +++ b/3813/CH4/EX4.20/Ex4_20.sce @@ -0,0 +1,28 @@ +//Electric Drives:concepts and applications by V.subrahmanyam
+//Publisher:Tata McGraw-Hill
+//Edition:Second
+//Ex4_20
+clc;
+clear;
+R=0.05;// Resistance in ohm
+N0=1000;//Speed in rpm
+Rf=46;// Resistance in ohm
+I1=75;//Current in A
+I2=150;//Current in A
+I3=250;//Current in A
+V=230;// voltage in V
+Eb=230;//Back emf in V
+If=V/Rf;
+Ia1=I1-If;
+Eb1=V-(Ia1*R);
+N1=(Eb1/Eb)*N0;
+disp(N1,"The speed N1 in rpm is:")
+Ia2=I2-If;
+Eb2=V-(Ia2*R);
+N2=(Eb2/Eb)*N0;
+disp(N2,"The speed N2 in rpm is:")
+Ia3=I3-If;
+Eb3=V-(Ia3*R);
+N3=(Eb3/Eb)*N0;
+disp(N3,"The speed N3 in rpm is:")
+
diff --git a/3813/CH4/EX4.3/Ex4_3.jpg b/3813/CH4/EX4.3/Ex4_3.jpg Binary files differnew file mode 100644 index 000000000..a99ff169f --- /dev/null +++ b/3813/CH4/EX4.3/Ex4_3.jpg diff --git a/3813/CH4/EX4.3/Ex4_3.sce b/3813/CH4/EX4.3/Ex4_3.sce new file mode 100644 index 000000000..7a75d8ab1 --- /dev/null +++ b/3813/CH4/EX4.3/Ex4_3.sce @@ -0,0 +1,33 @@ +//Electric Drives:concepts and applications by V.subrahmanyam
+//Publisher:Tata McGraw-Hill
+//Edition:Second
+//Ex4_3
+clc;
+clear;
+P=10000;
+V=240;// voltage in V
+N=1000;//Speed in rpm
+Eff1=0.87;//Efficiency in %
+Vs=250;// voltage in V
+f=50;//frequency in Hz
+Alpha=0.5;//angle
+R=0.40;// Resistance in ohm
+Fdf=1;//fundamental displacement factor
+df=0.9;//distortion factor
+pf=0.9;//the power factor
+Pi=P/Eff1;
+I=Pi/V;
+Eb=V-(I*R);
+Vi=0.9*Vs;
+Eb1=Vi-(I*R);
+N1=(Eb1/Eb)*N;
+Pi1=V*I*pf*(10)^(-3);
+Pi2=(Pi1*N1)/N;
+Vc=0.9*Vs*Alpha;
+Eb2=Vc-(I*R);
+N2=(N*Eb2)/Eb;
+P0=((Pi1*N2)/N)*1000;
+Pi0=Vc*I;
+Eff=(P0/Pi0)*100;
+disp(Eff,"Efficiency in % is:")
+//Result vary due to roundoff error
diff --git a/3813/CH4/EX4.4/Ex4_4.jpg b/3813/CH4/EX4.4/Ex4_4.jpg Binary files differnew file mode 100644 index 000000000..9699238e4 --- /dev/null +++ b/3813/CH4/EX4.4/Ex4_4.jpg diff --git a/3813/CH4/EX4.4/Ex4_4.sce b/3813/CH4/EX4.4/Ex4_4.sce new file mode 100644 index 000000000..a7322d63a --- /dev/null +++ b/3813/CH4/EX4.4/Ex4_4.sce @@ -0,0 +1,17 @@ +//Electric Drives:concepts and applications by V.subrahmanyam
+//Publisher:Tata McGraw-Hill
+//Edition:Second
+//Ex4_4
+clc;
+clear;
+V=250;// voltage in V
+f=50;//frequency in Hz
+R=1.5;// Resistance in ohm
+L=30;//inductance in mH
+Eb=100;//Back emf in V
+Alpha=0.866;//angle
+Vc=0.9*V*Alpha;
+Id=(Vc-Eb)/R;
+P=Vc*Id*10^(-3);
+pf=0.9*Alpha;
+disp(pf,"powerfactor is:")
diff --git a/3813/CH4/EX4.5/Ex4_5.jpg b/3813/CH4/EX4.5/Ex4_5.jpg Binary files differnew file mode 100644 index 000000000..6ac9ddf0b --- /dev/null +++ b/3813/CH4/EX4.5/Ex4_5.jpg diff --git a/3813/CH4/EX4.5/Ex4_5.sce b/3813/CH4/EX4.5/Ex4_5.sce new file mode 100644 index 000000000..1224fb7d7 --- /dev/null +++ b/3813/CH4/EX4.5/Ex4_5.sce @@ -0,0 +1,19 @@ +//Electric Drives:concepts and applications by V.subrahmanyam
+//Publisher:Tata McGraw-Hill
+//Edition:Second
+//Ex4_5
+clc;
+clear;
+N=1800;//Speed in rpm
+I=60;//Current in A
+V=400;// voltage in V
+E=185;//Back emf in V
+N2=900;//Speed in rpm
+R=0.5;// Resistance in ohm
+Vs=V/2.34;
+Vl=V/1.35;
+Vi=V-(I*R);
+V=E+(I*R);
+a=acos(V/(2.34*Vs));
+Alpha=(a*180)/%pi;
+disp(Alpha,"The firing angle in deg is:")
diff --git a/3813/CH4/EX4.6/Ex4_6.jpg b/3813/CH4/EX4.6/Ex4_6.jpg Binary files differnew file mode 100644 index 000000000..c08d60339 --- /dev/null +++ b/3813/CH4/EX4.6/Ex4_6.jpg diff --git a/3813/CH4/EX4.6/Ex4_6.sce b/3813/CH4/EX4.6/Ex4_6.sce new file mode 100644 index 000000000..ec16a946d --- /dev/null +++ b/3813/CH4/EX4.6/Ex4_6.sce @@ -0,0 +1,24 @@ +//Electric Drives:concepts and applications by V.subrahmanyam
+//Publisher:Tata McGraw-Hill
+//Edition:Second
+//Ex4_6
+clc;
+clear;
+V=500;// voltage in V
+Vs=250;// voltage in V
+I=181;//Current in A
+N=1500;//Speed in rpm
+R=0.1;// Resistance in ohm
+f=50;//frequency in Hz
+Eb=Vs-(I*R);
+Eb1=Eb/3;
+A1=acos(Vs/(1.35*V));
+Alpha1=(A1*180)/%pi;
+Ia2=I/9;
+V2=Eb1+(Ia2*R);
+A2=acos(V2/(1.35*V));
+Alpha2=(A2*180)/%pi;
+Vl=Vs/1.35;
+A3=acos(V2/(1.35*Vl));
+Alpha3=(A3*180)/%pi;
+disp(Alpha3,"The firing angle in deg is:")
diff --git a/3813/CH4/EX4.7.a/Ex4_7a.jpg b/3813/CH4/EX4.7.a/Ex4_7a.jpg Binary files differnew file mode 100644 index 000000000..4b1ed057a --- /dev/null +++ b/3813/CH4/EX4.7.a/Ex4_7a.jpg diff --git a/3813/CH4/EX4.7.a/Ex4_7a.sce b/3813/CH4/EX4.7.a/Ex4_7a.sce new file mode 100644 index 000000000..43256c89b --- /dev/null +++ b/3813/CH4/EX4.7.a/Ex4_7a.sce @@ -0,0 +1,17 @@ +//Electric Drives:concepts and applications by V.subrahmanyam
+//Publisher:Tata McGraw-Hill
+//Edition:Second
+//Ex4_7a
+clc;
+clear;
+V=300;// voltage in V
+Vt=363.25;// voltage in V
+f=60;//frequency in Hz
+Rd=0.02;// Resistance in ohm
+La=0.002;//inductance in H
+Id=500;//Current in A
+N=1500;//Speed in rpm
+Eb=Vt-(Id*Rd);
+A=acos(Vt/(1.35*V));
+Alpha=(A*180)/%pi;
+disp(Alpha,"The firing angle in deg is:")
diff --git a/3813/CH4/EX4.7.b/Ex4_7b.jpg b/3813/CH4/EX4.7.b/Ex4_7b.jpg Binary files differnew file mode 100644 index 000000000..0f01f1eb7 --- /dev/null +++ b/3813/CH4/EX4.7.b/Ex4_7b.jpg diff --git a/3813/CH4/EX4.7.b/Ex4_7b.sce b/3813/CH4/EX4.7.b/Ex4_7b.sce new file mode 100644 index 000000000..781b69249 --- /dev/null +++ b/3813/CH4/EX4.7.b/Ex4_7b.sce @@ -0,0 +1,17 @@ +//Electric Drives:concepts and applications by V.subrahmanyam
+//Publisher:Tata McGraw-Hill
+//Edition:Second
+//Ex4_7b
+clc;
+clear;
+V=300;// voltage in V
+Vt=363.25;// voltage in V
+f=60;//frequency in Hz
+Rd=0.02;// Resistance in ohm
+La=0.001;//inductance in H
+Id=500;//Current in A
+N=1500;//Speed in rpm
+Xc=2*%pi*f*La;
+Z=Rd+((3*Xc)/%pi);
+Eb=Vt-(Id*Z);
+disp(Eb,"The back emf in V is:")
diff --git a/3813/CH4/EX4.8/Ex4_8.jpg b/3813/CH4/EX4.8/Ex4_8.jpg Binary files differnew file mode 100644 index 000000000..33bdb9be9 --- /dev/null +++ b/3813/CH4/EX4.8/Ex4_8.jpg diff --git a/3813/CH4/EX4.8/Ex4_8.sce b/3813/CH4/EX4.8/Ex4_8.sce new file mode 100644 index 000000000..fef6a47e6 --- /dev/null +++ b/3813/CH4/EX4.8/Ex4_8.sce @@ -0,0 +1,16 @@ +//Electric Drives:concepts and applications by V.subrahmanyam
+//Publisher:Tata McGraw-Hill
+//Edition:Second
+//Ex4_8
+clc;
+clear;
+V=600;// voltage in V
+R=0.16;// Resistance in ohm
+Ia=210;//Current in A
+N=600;//Speed in rpm
+n=10;//no of unit
+Eb=V-(Ia*R);
+Td=((Eb*Ia)/(2*%pi*n));
+W=(2*%pi*N)/60;
+A=Td/(W)^2;
+disp(A,"The constant A is:")
diff --git a/3813/CH4/EX4.9/Ex4_9.jpg b/3813/CH4/EX4.9/Ex4_9.jpg Binary files differnew file mode 100644 index 000000000..8655e9e86 --- /dev/null +++ b/3813/CH4/EX4.9/Ex4_9.jpg diff --git a/3813/CH4/EX4.9/Ex4_9.sce b/3813/CH4/EX4.9/Ex4_9.sce new file mode 100644 index 000000000..831ed6a02 --- /dev/null +++ b/3813/CH4/EX4.9/Ex4_9.sce @@ -0,0 +1,30 @@ +//Electric Drives:concepts and applications by V.subrahmanyam
+//Publisher:Tata McGraw-Hill
+//Edition:Second
+//Ex4_9
+clc;
+clear;
+V1=500;// voltage in V
+V2=450;// voltage in V
+Vs=420;// voltage in V
+V=400;// voltage in V
+I=60;//Current in A
+R=1.5;// Resistance in ohm
+R1=5;// Resistance in ohm
+Eb=20;//Back emf in V
+f=50;//frequency in Hz
+Vl=V2+Eb;
+A=acos(Vl/(1.35*Vs));
+Alpha1=(A*180)/%pi;
+Eb1=V2-(I*R);
+disp(Eb1,"The back emf in V is:")
+V3=-V2-(I*R);
+Vc=-V2+Eb;
+A1=acos(Vc/(1.35*Vs));
+Alpha2=(A1*180)/%pi;
+disp(Alpha2,"The firing angle1 in deg is:")
+Eb2=-V-(I*R);
+Vc1=-V+Eb+(R1*I);
+A2=acos(Vc1/(1.35*Vs));
+Alpha3=(A2*180)/%pi;
+disp(Alpha3,"The firing angle2 in deg is:")
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