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| author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
|---|---|---|
| committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
| commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
| tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /1445/CH8/EX8.15/ch8_ex_15.sce | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
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initial commit / add all books
Diffstat (limited to '1445/CH8/EX8.15/ch8_ex_15.sce')
| -rw-r--r-- | 1445/CH8/EX8.15/ch8_ex_15.sce | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/1445/CH8/EX8.15/ch8_ex_15.sce b/1445/CH8/EX8.15/ch8_ex_15.sce new file mode 100644 index 000000000..e7909058b --- /dev/null +++ b/1445/CH8/EX8.15/ch8_ex_15.sce @@ -0,0 +1,30 @@ +//CHAPTER 8- DIRECT CURRENT MACHINES +//Example 15 + +disp("CHAPTER 8"); +disp("EXAMPLE 15"); + +//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; //in Amperes +phi1=1; //in Wb (phi=1 is an assumption) +phi2=(1-(4/100)); //in Wb (phi2=0.96 of phi1) + +//SOLUTION + +//At no load +E_a1=v_t-(I_a1*r_a); +I_f=v_t/r_f; + +//At full load +I_a2=I_l-I_f; +E_a2=v_t-(I_a2*r_a); +N2=(E_a2/E_a1)*(phi1/phi2)*N1; +N2=round(N2); //to round off the value +disp(sprintf("The full load speed is %d rpm",N2)); + +//END |