diff options
Diffstat (limited to '1445/CH8/EX8.15/Ex8_15.sce')
-rw-r--r-- | 1445/CH8/EX8.15/Ex8_15.sce | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/1445/CH8/EX8.15/Ex8_15.sce b/1445/CH8/EX8.15/Ex8_15.sce index f14132a94..e85f70db9 100644 --- a/1445/CH8/EX8.15/Ex8_15.sce +++ b/1445/CH8/EX8.15/Ex8_15.sce @@ -1,25 +1,25 @@ //CHAPTER 8- DIRECT CURRENT MACHINES //Example 15 +clc; disp("CHAPTER 8"); disp("EXAMPLE 15"); -//230 V DC shunt motor //VARIABLE INITIALIZATION v_t=230; //in Volts I_a1=3.33; //in Amperes N1=1000; //in rpm r_a=0.3; //armature resistance in Ohms r_f=160; //field resistance in Ohms -I_l=40; //line current in Amperes +I_l=40; //in Amperes phi1=1; //in Wb (phi=1 is an assumption) -phi2=(1-(4/100)); //in Wb (phi2=0.96 of phi1), as armature reaction reduces no load flux by 4% +phi2=(1-(4/100)); //in Wb (phi2=0.96 of phi1) //SOLUTION //At no load -E_a1=v_t-(I_a1*r_a); //counter emf -I_f=v_t/r_f; //field current +E_a1=v_t-(I_a1*r_a); +I_f=v_t/r_f; //At full load I_a2=I_l-I_f; |