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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/CH3/EX3.1 | |
| 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/CH3/EX3.1')
| -rw-r--r-- | 3784/CH3/EX3.1/Ex3_1.sce | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/3784/CH3/EX3.1/Ex3_1.sce b/3784/CH3/EX3.1/Ex3_1.sce new file mode 100644 index 000000000..b372f1a54 --- /dev/null +++ b/3784/CH3/EX3.1/Ex3_1.sce @@ -0,0 +1,27 @@ +clc
+//variable initialization
+Vm= 220 //armature voltage in volts
+N= 1000 //speed in rpm
+N1= 900 // speed in rpm
+Ia= 60 //armature current in ampere
+Ra= 0.6 //armature resistance in ohm
+a= 0
+V= 165 //line voltage in volts
+
+//solution
+Eb1= Vm-Ia*Ra //back emf in volts
+Eb2= (N1/N)*Eb1 //back emf in volts
+Ea=Eb2+(Ia*Ra) //armature voltage in volts
+Em= V*sqrt(2)
+A=(((Ea*%pi)/(3*Em)))
+a1=acosd(A)
+a2=180-a1
+Ea1=V-(Ia*Ra) //armature voltage in volts
+cosa1=((Ea/Em)*(%pi/3))
+a11=acosd((Ea1*%pi)/(3*Em))
+a22=180-a1
+printf('\n\n Firing Angle for motoring operations at rated motor torqu and 900 or -900 rpm=%0.1f \n\n',a1)
+printf('\n\n Firing Angle for motoring operations at rated motor torqu and 900 or -900 rpm=%0.1f \n\n',a2)
+printf('\n\n Firing Angle for braking operations at rated motor torqu and 900 or -900 rpm=%0.1f \n\n',a11)
+printf('\n\n Firing Angle for braking operations at rated motor torqu and 900 or -900 rpm=%0.1f \n\n',a22)
+//The answers vary due to round off error
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