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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/EX8.18/ch8_ex_18.sce | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
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initial commit / add all books
Diffstat (limited to '1445/CH8/EX8.18/ch8_ex_18.sce')
| -rw-r--r-- | 1445/CH8/EX8.18/ch8_ex_18.sce | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/1445/CH8/EX8.18/ch8_ex_18.sce b/1445/CH8/EX8.18/ch8_ex_18.sce new file mode 100644 index 000000000..ba0966842 --- /dev/null +++ b/1445/CH8/EX8.18/ch8_ex_18.sce @@ -0,0 +1,28 @@ +//CHAPTER 8- DIRECT CURRENT MACHINES +//Example 18 + +disp("CHAPTER 8"); +disp("EXAMPLE 18"); + +//VARIABLE INITIALIZATION +v_t=460; //in Volts +p_o=10*736; //in Watts (1 metric H.P=735.5 W) +ratio=85/100; //as given in the question +eff=84/100; +I_f=1.1; //in Amperes +r_a=0.2; //in Ohms + +//SOLUTION +p_i=p_o/eff; +I_l=p_i/v_t; +I_a=I_l-I_f; +E1=v_t-(I_a*r_a); +E2=E1*ratio; //E2:E1=N2:N1=ratio +v=v_t-E2; //voltage drop across r_a and r_s (r_s is the series resistance to be inserted) +r_s=(v/I_a)-r_a; +disp(sprintf("The resistance required is %f Ω",r_s)); + +//The answer is different because ratio equals 85/100 and not 75/100 + +//END + |