diff options
Diffstat (limited to '3811/CH4/EX4.1')
| -rw-r--r-- | 3811/CH4/EX4.1/Ex4_1.jpg | bin | 0 -> 11852 bytes | |||
| -rw-r--r-- | 3811/CH4/EX4.1/Ex4_1.sce | 24 |
2 files changed, 24 insertions, 0 deletions
diff --git a/3811/CH4/EX4.1/Ex4_1.jpg b/3811/CH4/EX4.1/Ex4_1.jpg Binary files differnew file mode 100644 index 000000000..2515065b3 --- /dev/null +++ b/3811/CH4/EX4.1/Ex4_1.jpg diff --git a/3811/CH4/EX4.1/Ex4_1.sce b/3811/CH4/EX4.1/Ex4_1.sce new file mode 100644 index 000000000..5b7f75468 --- /dev/null +++ b/3811/CH4/EX4.1/Ex4_1.sce @@ -0,0 +1,24 @@ +//Book name: Fundamentals of electrical drives by Mohamad A. El- Sharkawi
+//chapter 4
+//example 4.1
+//edition 1
+//publisher and place:Nelson Engineering
+clc;
+clear;
+m=5000; //mass of the electric bus in kg
+d=1; //diameter of the wheel in m
+r=d/2; //radius of the wheel in m
+v=50; //speed of the bus going to uphill in kg/hr
+a=30; //slope of the hill in degree
+u=0.4; //friction coefficient
+g=9.8; //gravitational acceleration
+Fg=m*g; //gravitational force in newton(N)
+F=Fg*cosd(a); //normal force in newton(N)
+Fl=Fg*sind(a); //load pulling force in newton (N)
+Fr=u*F; //friction force in newton(N)
+Fm=Fl+Fr; //total force seen by motor in newton(N)
+Tm=Fm*r; //Torque seen by the motor in Nm
+omega=v/r; //angular speed
+Pm=Tm*omega; //power consumed by the motor in watt
+Pm=Pm*10^-3; //power consumed by the motor in kilowatt
+disp(Pm,'The power consumed by the motor in kilowatt is:')
|
