diff options
Diffstat (limited to '3784/CH8/EX8.2/Ex8_2.sce')
-rw-r--r-- | 3784/CH8/EX8.2/Ex8_2.sce | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/3784/CH8/EX8.2/Ex8_2.sce b/3784/CH8/EX8.2/Ex8_2.sce new file mode 100644 index 000000000..075e87467 --- /dev/null +++ b/3784/CH8/EX8.2/Ex8_2.sce @@ -0,0 +1,32 @@ +clc
+P=500e+3//power of motor in Watts
+V=6.6e+3//rated voltage in Volts
+f=60//frequency in Hz
+n=6//no. of poles
+Rs=0//resistnce of motor in ohm
+Xm=78//reactance in ohm
+Xsr=3//reactance in ohm
+p=0//pf=1
+k=5
+
+//solution
+Xsr1=3*%i
+Vph=V/sqrt(3)
+Is=P/(3*Vph*cosd(p))
+E=Vph-(Is*%i*Xsr)
+E1=abs(E)
+d=asind((Is*1*Xsr/E1))
+Pm=3*Vph*E*sind(d)/Xsr
+Pm1=abs(Pm)//Power in watt
+Pm2=Pm1*10^(-3)//Power in Kw
+Ns=120*f/n
+N=Ns/k
+wm=N*2*%pi/60
+T=Pm1/wm
+If1=E/(%i*Xsr)
+Im=Is+abs(If1)
+printf('\n\n Power Pm=%0.1f Kw\n\n',Pm2)
+printf('\n\n Torque T=%0.1f N-m\n\n',T)
+printf('\n\n The Field Current=%0.1f Amp\n\n',abs(If1))
+printf('\n\n The motor Current=%0.1f Amp\n\n',Im)
+//The answers vary due to round off error
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