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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 /147/CH14/EX14.15/Example14_15.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 '147/CH14/EX14.15/Example14_15.sce')
| -rw-r--r-- | 147/CH14/EX14.15/Example14_15.sce | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/147/CH14/EX14.15/Example14_15.sce b/147/CH14/EX14.15/Example14_15.sce new file mode 100644 index 000000000..757a86dd0 --- /dev/null +++ b/147/CH14/EX14.15/Example14_15.sce @@ -0,0 +1,28 @@ +close();
+clear;
+clc;
+//power of shunt motor 'P', full load line current 'I', armature resistance 'Ra', field resistance 'Rf', brush contant drop 'Vb', core and friction loss 'Pc'
+Vb = 2; //V
+Ra = 0.25; //ohm
+Rf = 230; //ohm
+P = 10; //hp
+V = 230; //V
+I = 40; //A
+Pc = 380; //W
+//input power 'Pi'
+Pi = I*V; //W
+//field-resistance loss 'Pf'
+Pf = (V/Rf)^2 * Rf; //W
+//armature resistance loss 'Pa'
+Pa = (I-1)^2*Ra; //W
+//stray-load loss 'Ps'
+Ps = (1/100)*P*746; //W
+//brush-contact losses 'Pb'
+Pb = Vb*(I-1); //W
+//total loss 'loss'
+loss = Pf+Pa+Ps+Pb+Pc;
+//output power 'Po'
+Po = Pi-loss; //W
+//efficiency 'n'
+n = Po/Pi;
+mprintf("Efficiency of motor, n = %0.1f %%",n*100);
\ No newline at end of file |