2 files changed, 33 insertions, 0 deletions
diff --git a/416/CH12/EX12.5/ans12_5.txt b/416/CH12/EX12.5/ans12_5.txt
new file mode 100755
index 000000000..ed203f1df
--- /dev/null
+++ b/416/CH12/EX12.5/ans12_5.txt
@@ -0,0 +1,9 @@
+ 
+ example 12 5   
+ 
+ (a)   
+ synchronous power 872kW 
+ synchronous torque for 0.5 displacement 2777N-M 
+ (b) full load   
+ synchronous power 977kW 
+ synchronous torque for 0.5 displacement 3111N-M 
+\ No newline at end of file
diff --git a/416/CH12/EX12.5/example12_5.sce b/416/CH12/EX12.5/example12_5.sce
new file mode 100755
index 000000000..1c4d5df5a
--- /dev/null
+++ b/416/CH12/EX12.5/example12_5.sce
@@ -0,0 +1,24 @@
+clc
+clear
+disp('example 12 5')
+po=5 //mva rating
+v=10 //voltage in kv
+n=1500;ns=n/60 //speed
+f=50 //freaquency
+pfb=0.8//power factor in b
+x=0.2*%i //reactance of machine
+md=0.5 //machanical displacement
+//no load
+v=1;e=1;
+p=4
+spu=v*e/abs(x);sp=spu*po*1000;mt=(%pi*p)/(180*2)
+spm=sp*mt //synchronous power in per mech.deree
+st=spm*md*1000/(2*ns*%pi)
+disp('(a)')
+printf(" synchronous power %dkW \n synchronous torque for %.1f displacement %dN-M",spm,md,st)
+disp('(b) full load')
+ee=e+x*(pfb-sind(acosd(pfb))*%i)
+spb=v*abs(ee)*cosd(atand(imag(ee)/real(ee)))/abs(x)  //synchronous power 
+sppm=spb*po*1000*mt //synchronous power per mech.degree
+stp=sppm*md*1000/(2*%pi*ns)//synchrounous torque under load
+printf(" synchronous power %dkW \n synchronous torque for %.1f displacement %dN-M",sppm,md,stp)