initial commit / add all books

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+//EXAMPLE 25.4

+//INDUCTOR WITH VARYING DISPLACEMENT

+

+clc;

+funcprot(0);

+

+//Variable Initialisation

+Lo=50;..........//Inductance in Mili Henry

+xo=0.05;........//Displacement in Centi Meter

+Rc=0.5;..........//Coil resistance in 0.5 Ohms

+i1=3;............//Current in Amperes

+//(a)

+x1=0.075;..........//Displacement held constant in Centi Meter

+L1=(2*Lo)/(1+(x1/xo));.......//Inductance at x1 in Mili Henry

+y1=L1*i1;..............//Flux linkage at x1

+Wfd1=(1/2)*L1*(i1^2)*10^-3;.......//Resultant magnetic stored energy in the inductor in Joules

+disp(Wfd1,"(a).Resultant magnetic stored energy in the inductor at x1 in Joules:");

+

+//(b)

+x2=0.15;....................//Displacement held constant in Centi Meter

+L2=(2*Lo)/(1+(x2/xo));.......//Inductance at x2 in Mili Henry

+y2=L2*i1;..............//Flux linkage at x2

+Wfd2=(1/2)*(y1-y2)*(i1)*10^-3;.......//Resultant magnetic stored energy in the inductor in Joules

+disp(Wfd2,"(b).Resultant magnetic stored energy in the inductor at x2 in Joules:");

+