initial commit / add all books

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diff --git a/3760/CH6/EX6.44/Ex6_44.sce b/3760/CH6/EX6.44/Ex6_44.sce
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+clc;

+p=6; // number of poles

+m=3; // number of phases

+f=50; // frequency of motor

+P=40000; // rated power of induction motor

+v=400; // rated voltage of induction motor

+// results of blocked  rotor test

+vb=200; // applied voltage

+ib=110; // applied current

+pf=0.4; // power factor

+f1=45; // frequency at starting torque is to be determined

+e=380; // voltage at starting torque is to be determined

+vbp=vb/sqrt(3); // per phase voltage during blocked  rotor test

+zb=vbp/ib; // total impedance referred to stator

+R=zb*pf; // net resistance referred to stator

+X=zb*(sqrt(1-pf^2)); // net reactance referred to stator

+X=X*(f1/f); // net reactance at frequency=45

+Z=R+X*%i; // impedance at frequency=45

+v1=e/sqrt(3); // per phase stator

+is=v1/(Z); // starting current

+ws=(4*%pi*f)/p; // synchronous speed

+T=(3/ws)*abs(is)^2*(R/2);

+printf('Starting torque is %f Nm',T);