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+//Pf at which the slow machine will work
+
+clc;
+clear;
+
+pf1=0.8;//Power Factor Lag (Combined)
+Pa=2500*(10^3); // Combined Power
+Pr=Pa*(tand(acosd(pf1))); // Combined VAr
+Pat=1000*(10^3); // Active power of the turbo alternator unity pf so no VAr
+Prt=0;
+Pas=Pa-Pat; // Active power of the slow speed alternator
+Prs=Pr-Prt; // Reactive power of the slow speed alternator
+
+theta=atand(Prs/Pas); // Power Factor Angle
+
+powfac=cosd(theta); // Power factor
+
+printf('The Power Factor of the slow speed alternator is %g\n',powfac)