diff options
| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /213/CH10/EX10.3 | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '213/CH10/EX10.3')
| -rwxr-xr-x | 213/CH10/EX10.3/10_3.sce | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/213/CH10/EX10.3/10_3.sce b/213/CH10/EX10.3/10_3.sce new file mode 100755 index 000000000..e7a484f2a --- /dev/null +++ b/213/CH10/EX10.3/10_3.sce @@ -0,0 +1,25 @@ +//To estimate the power
+clc
+//Given:
+W=75*1000 //W
+v=300 //mm/min
+p=6,d0=40 //mm
+mu=0.1
+//Solution:
+//Calculating the mean diameter of the screw
+d=(d0-p/2)/1000 //m
+//Calculating the helix angle
+alpha=atan(p/(%pi*d*1000)) //radians
+//Calculating the force required at the circumference of the screw
+phi=atan(mu) //Limiting angle of friction, radians
+P=W*tan(alpha+phi) //N
+//Calculating the torque required to overcome the friction
+T=P*d/2 //N-m
+//Calculating the speed of the screw
+N=v/p //rpm
+//Calculating the angular speed
+omega=2*%pi*N/60 //rad/s
+//Calculating the power of the motor
+Power=T*omega/1000 //Power of the motor, kW
+//Results:
+printf("\n\n Power of the motor required = %.3f kW.\n\n",Power)
\ No newline at end of file |