blob: 81ba71e3bf0bc374301de2943f6d27bed549c533 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
//CHAPTER 8- DIRECT CURRENT MACHINES
//Example 21
disp("CHAPTER 8");
disp("EXAMPLE 21");
//VARIABLE INITIALIZATION
p_o=10*1000; //in Watts
P=6; //number of poles
E_g=200; //in Volts
N=1500; //in rpm
A=P; //since the armature is lap connected
B=0.9; //flux density in Tesla
l=0.25; //length of armature in m
dia=0.2; //diameter of armature in m
//SOLUTION
//solution (a)
area=2*%pi*(dia/2)*l;
phi=B*area;
disp(sprintf("(a) The flux per pole is %f Wb",phi));
//solution (b)
Z=(60*E_g)/(phi*N);
disp(sprintf("(b) The total number of active conductors is %d",Z));
//solution (c)
I_a=50;
p=E_g*I_a;
w=(2*%pi*N)/60;
T=p/w;
disp(sprintf("(c) The torque developed when armature current is 50 A is %f N-m",T));
//END
|
