1 files changed, 36 insertions, 0 deletions
diff --git a/3784/CH2/EX2.2/Ex2_2.sce b/3784/CH2/EX2.2/Ex2_2.sce
new file mode 100644
index 000000000..dcb84cf45
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+++ b/3784/CH2/EX2.2/Ex2_2.sce
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+clc
+//variable initialisation
+a1=0//Initial Firing Angle of Converter
+Vl=460//Line to Line Voltage in Volts
+Ia=150//armature Current in Ampere
+Ra=0.0999//Armature Resistance in ohm
+K=0.33
+N1=1650//Rotor Speed in rpm
+Ia1=15//armature Current for 2nd case in Ampere
+//solution
+Vm=(sqrt(2)/sqrt(3))*Vl
+Va=(3*sqrt(3)/%pi)*Vm*cosd(a1)
+Eb1=Va-(Ia*Ra)
+N0=Eb1/K//no load Speed in rpm
+a2=45
+Va2=Va*cosd(a2)
+Eb2=Va2-(Ia*Ra)
+N01=Eb2/K//No load speed at alpha=30
+Eb3=K*N1
+Va3=Eb3+(Ia*Ra)
+a3=acosd(Va3/Va)
+Irms=Ia*sqrt((180-a3)/180)
+P1=3*(Vl/sqrt(3))*Irms//Supply VA
+P=Va3*Ia//Power input to motor
+Pa=Va3*Ia
+pf=Pa/P//Power Factor
+Eb4=Va3-(Ia1*Ra)
+N4=Eb4/K
+R=(N4-N1)*100/N1//Speed Regulation
+printf('\n\n No load speed at alpha 0=%0.1f rpm\n\n',N0)
+printf('\n\n No load speed at alpha 45=%0.1f rpm\n\n',N01)
+printf('\n\n The Firing Angle for rated speed=%0.1f\n\n',a3)
+printf('\n\n Supply Power at rated speed=%0.1f watts\n\n',P)
+printf('\n\n Power Factor at rated speed=%0.1f\n\n',pf)
+printf('\n\n Speed Regulation=%0.1f\n\n',R)
+//The answers vary due to round off error