diff options
Diffstat (limited to '1445/CH8/EX8.12/Ex8_12.sce')
| -rw-r--r-- | 1445/CH8/EX8.12/Ex8_12.sce | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/1445/CH8/EX8.12/Ex8_12.sce b/1445/CH8/EX8.12/Ex8_12.sce index 364e96eaf..11e8f4315 100644 --- a/1445/CH8/EX8.12/Ex8_12.sce +++ b/1445/CH8/EX8.12/Ex8_12.sce @@ -1,10 +1,10 @@ //CHAPTER 8- DIRECT CURRENT MACHINES //Example 12 +clc; disp("CHAPTER 8"); disp("EXAMPLE 12"); -//4 pole wave wound 750 RPM shunt generator //VARIABLE INITIALIZATION P=4; //number of poles N=750; //in rpm @@ -16,13 +16,13 @@ r_l=10; //load resistance in Ohms A=2; //for wave winding //SOLUTION -E_a=(phi*Z*N*P)/(60*A); //induced emf -disp(sprintf("The induced emf is %.0f V",E_a)); +E_a=(phi*Z*N*P)/(60*A); +disp(sprintf("The induced emf is %f V",E_a)); // E_a=v+(I_a*r_a) but I_a=I_l+I_f and I_l=v/r_l, I_f=v/r_f =>I_a=(v/r_l) + (v/r_f) // =>E_a=v+(((v/r_l) + (v/r_f))*r_a) // taking v common, the following equation is obtained v=E_a/(1+(r_a/r_f)+(r_a/r_l)); -disp(sprintf("The terminal voltage of the machine is %.0f V",v)); +disp(sprintf("The terminal voltage of the machine is %f V",v)); //The answer is slightly different due to the precision of floating point numbers |