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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 /1418/CH26/EX26.21.c/EX26_21c.sce | |
| 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 '1418/CH26/EX26.21.c/EX26_21c.sce')
| -rw-r--r-- | 1418/CH26/EX26.21.c/EX26_21c.sce | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/1418/CH26/EX26.21.c/EX26_21c.sce b/1418/CH26/EX26.21.c/EX26_21c.sce new file mode 100644 index 000000000..e0ee9b33d --- /dev/null +++ b/1418/CH26/EX26.21.c/EX26_21c.sce @@ -0,0 +1,39 @@ +//EXAMPLE 26.21(c)
+//4-POLE DC SHUNT GENERATOR
+
+clc;
+funcprot(0);
+
+//Variable Initialisation
+P=4;.........................//Total number of poles
+S=80;........................//Total number of slots
+C=10;.........................//Total number of conductor per slots
+E1=400;.........................//Generated EMF at No load in Volts
+N1=1000;........................//Speed of the generator in rpm
+N2=800;.........................//Dropped speed of the generator in rpm
+Al=P;.........................//Number of parallel paths in a lap wound generator
+Z=S*C;........................//Total number of conductors
+E2=220;.......................//Generated open circuit voltage in Volts
+
+//Keeping speed held cnstant while changing the flux per pole
+printf("(i)Keeping speed held cnstant while changing the flux per pole");
+Phi1=(E1*60*Al)*1000/(P*N1*Z);...........//Flux per pole in Mili Webers at 400 Volts
+disp(Phi1,"Flux per pole in Mili Webers at 400 Volts:");
+
+Phi2=(E2/E1)*Phi1;....................//Flux per pole in Mili Webers at 220 Volts
+disp(Phi2,"Flux per pole in Mili Webers at 220 Volts:");
+
+if Phi2<Phi1 then
+ printf("By increasing the shunt field circuit resistance with the help of adding external rheostatic,\n");
+ printf("the current in the field circuit is reduced so as to decrease the flux to %0.1f mWb",Phi2);
+end
+
+
+//Keeping the same flux per pole while changing the speed
+printf("\n \n(ii).Keeping the same flux per pole while changing the speed");
+N=(E2*60)/((Phi1/1000)*N2);................//Speed of the generator in rpm at 30 Mili Webers
+disp(N,"Speed of the generator in rpm at 30 Mili Webers:");
+
+printf("Field circuit resistance must be reduced to a new value in order to obtain");
+printf("\n %0.1f mWb of flux pole from a voltage of 220 V",Phi);
+
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