initial commit / add all books

1 files changed, 31 insertions, 0 deletions

diff --git a/213/CH13/EX13.21/13_21.sce b/213/CH13/EX13.21/13_21.sce
new file mode 100755
index 000000000..948934810
--- /dev/null
+++ b/213/CH13/EX13.21/13_21.sce
@@ -0,0 +1,31 @@
+//To find speed, direction and torque

+clc

+//Given:

+TA=14, TC=100

+r=98/41 //TE/TD

+PA=1.85*1000 //W

+NA=1200 //rpm

+//Solution:

+//Refer Fig. 13.28 and Table 13.23

+//Calculating the number of teeth on wheel B

+TB=(TC-TA)/2

+//Calculating the values of x and y

+//From the fourth row of the table, -y+x*(TA/TC) = 0, or x*(TA/TC)-y = 0    .....(i)

+//Also, -x-y = 1200, or x+y = -1200                                         .....(ii)

+A=[TA/TC -1; 1 1]

+B=[0; -1200]

+V=A \ B

+x=V(1)

+y=V(2)

+//Calculating the speed of gear E

+NE=round(-y+x*(TA/TB)*(1/r)) //rpm

+//Fixing torque required at C:

+//Calculating the torque on A

+Ta=PA*60/(2*%pi*NA) //Torque on A, N-m

+//Calculating the torque on E

+Te=PA*60/(2*%pi*NE) //Torque on E

+//Calculating the fixing torque required at C

+Tc=Te-Ta //Fixing torque at C, N-m

+//Results:

+printf("\n\n Speed and direction of rotation of gear E, NE = %d rpm, anticlockwise.\n\n",NE)

+printf(" Fixing torque required at C = %.1f N-m.\n\n",Tc)
\ No newline at end of file