initial commit / add all books

2 files changed, 29 insertions, 0 deletions

diff --git a/83/CH4/EX4.3/example_4_3.sce b/83/CH4/EX4.3/example_4_3.sce
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+//Taking Base value MVA and KVA
+clear;clc;
+mvab=645; //Base MVA in 3-phase
+kvb=24; //Base KV,line-to-line
+
+vl=24/kvb; //Load voltage
+xs=1.2;
+xs=(xs*mvab)/kvb^2; // xs converted to its pu
+
+//since the generator is operating at full load & 0.9pf
+pf_angle=acos(0.9);
+Ia=1*(cos(pf_angle)-%i*sin(pf_angle)); //load current
+//to find excitation emf
+ef=vl+%i*xs*Ia;
+delta=atand(imag(ef)/real(ef));//positive for leading
+ef=abs(ef)*kvb; //pu to actual unit conversion
+  if(delta>0) then lead_lag='leading';
+   else lead_lag='lagging';
+  end
+printf('Excitation emf= %0.2f kV at an angle %0.3f (%s) \n\n',ef,delta,lead_lag);
+//to find reactive power drawn by load
+Q=vl*abs(imag(Ia));
+Q=Q*mvab; //pu to actual unit conversion
+printf('Reactive power drawn by laod= %d MVAR',Q);
diff --git a/83/CH4/EX4.3/result_example_4_3.txt b/83/CH4/EX4.3/result_example_4_3.txt
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+ 
+Excitation emf= 47.86 kV at an angle 37.331 (leading) 
+
+Reactive power drawn by laod= 281 MVAR 
+