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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 /3760/CH4/EX4.27/Ex4_27.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 '3760/CH4/EX4.27/Ex4_27.sce')
| -rw-r--r-- | 3760/CH4/EX4.27/Ex4_27.sce | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/3760/CH4/EX4.27/Ex4_27.sce b/3760/CH4/EX4.27/Ex4_27.sce new file mode 100644 index 000000000..42c166d91 --- /dev/null +++ b/3760/CH4/EX4.27/Ex4_27.sce @@ -0,0 +1,23 @@ +clc;
+Vt=230;//output voltage
+Ra=0.3;//armature circuit resistance
+Rf=160;//field circuit resistance
+Il=40;//line current at full load & rated voltage
+Ia1=3.33//armature current at rated voltage & no load speed of 1000 rpm
+//No load counter emf is-
+Ea1=Vt-Ia1*Ra;
+If=Vt/Rf;//field current
+//At full load armature current is-
+Ia2=Il-If;
+Ea2=Vt-Ia2*Ra;//Counter emf at full load
+//At full load, the field flux is-
+//Phi_2=0.96*phi_1
+//The conter emf Ea, is given by- Ea=Ka*phi*Wm
+//Ea1/Ea2=(Ka*phi_1*Wm1)/(Ka*phi_2*Wm2)=(phi_1*n1)/(phi_2*n2) or 229/218.43=(1000*phi_1)/n2*(0.96*phi_1)...(1)
+//from equation (1)
+n2=995;//full load speed
+//At full load, Ea2=Ka*phi_2*Wm
+//Ka*phi_2=Ea2/Wm
+//Electromagnetic or developed, torque at full load is, Te=Ka*phi_2*Ia2
+Te=(Ea2*60)/(2*%pi*n2)*Ia2;//Electromagnetic torque developed.
+printf('Electromagnetic or developed, torque at full load is %f.',Te);
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