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| author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
|---|---|---|
| committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
| commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
| tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /3784/CH7/EX7.11 | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
| download | Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.gz Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.bz2 Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.zip | |
initial commit / add all books
Diffstat (limited to '3784/CH7/EX7.11')
| -rw-r--r-- | 3784/CH7/EX7.11/Ex7_11.sce | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/3784/CH7/EX7.11/Ex7_11.sce b/3784/CH7/EX7.11/Ex7_11.sce new file mode 100644 index 000000000..b8063e620 --- /dev/null +++ b/3784/CH7/EX7.11/Ex7_11.sce @@ -0,0 +1,28 @@ +clc
+//variable initialization
+V=380 //line voltage in volts
+P=8 //number of poles
+f=50 //frequency in Hz
+n=1.25
+N1=600 //speed in rpm
+N2=400 //speed in rpm
+
+//solution
+Ns=(120*f/P)
+s=(Ns-N1)/Ns
+Vd1=(3*sqrt(6)*s*(V/sqrt(3)))/(%pi*n)
+m=(3*sqrt(6)*(V/sqrt(3)))/(%pi*Vd1)
+a=acosd(-(s*(n/m)))
+s1=(Ns-N2)/Ns
+s1=0.4//TRo avoid further Computational errors
+Vdc=(3*sqrt(6)*s1*(V/sqrt(3))/%pi)/n
+Vd2=(3*sqrt(6)*s1*(V/sqrt(3)))/(%pi*n)
+m1=(((3*sqrt(6))/%pi)*(V/sqrt(3)))/Vd2
+a1=acosd(s1/(m1/n))
+w1=(2*%pi*Ns)/60
+w2=w1/(1+(m/n))//Speed in rad/sec
+w21=w2*60/(2*%pi)
+printf('\n\n The Firing Angle for 600rpm=%0.1f\n\n',a)
+printf('\n\n The Firing Angle for 400rpm=%0.1f\n\n',a1)
+printf('\n\n Minimum Possible Speed=%0.1f rpm\n\n',w21)
+//The answers vary due to round off error
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