diff options
Diffstat (limited to '1445/CH2/EX2.42/Ex2_42.sce')
| -rw-r--r-- | 1445/CH2/EX2.42/Ex2_42.sce | 31 |
1 files changed, 14 insertions, 17 deletions
diff --git a/1445/CH2/EX2.42/Ex2_42.sce b/1445/CH2/EX2.42/Ex2_42.sce index 4d3681898..9fba797b9 100644 --- a/1445/CH2/EX2.42/Ex2_42.sce +++ b/1445/CH2/EX2.42/Ex2_42.sce @@ -1,37 +1,34 @@ //CHAPTER 2- STEADY-STATE ANALYSIS OF SINGLE-PHASE A.C. CIRCUIT //Example 42 // read it as example 41 in the book on page 2.100 +clc; disp("CHAPTER 2"); disp("EXAMPLE 42"); //VARIABLE INITIALIZATION I=10; // max amplitude of wave in Amp -rms1=5; //rms values of current +rms1=5; rms2=7.5; rms3=10; -phi1=30; //phase angles +phi1=30; phi2=-60; phi3=45; -f=50; //frequency in Hz +f=50; //Hz w=2*%pi*f; // //SOLUTION -//in case of sinosoidal wave, average value of alternating quantity = RMS values/1.11 -av1=rms1/1.11; //average values of 1,2,3 currents +av1=rms1/1.11; av2=rms2/1.11; av3=rms3/1.11; disp("SOLUTION (i)"); -disp(sprintf("The average value of 1st current is %.2f Amp", av1)); -disp(sprintf("The average value of 2nd current is %.2f Amp", av2)); -disp(sprintf("The average value of 3rd current is %.2f Amp", av3)); +disp(sprintf("The average value of 1st current is %f Amp", av1)); +disp(sprintf("The average value of 2nd current is %f Amp", av2)); +disp(sprintf("The average value of 3rd current is %f Amp", av3)); // -//instantaneous values of current -//i(t)=RMS.sqrt(2).sin (w.t+phi) -//w=2.pi.f which for 50 Hz coes to 314 disp("SOLUTION (ii)"); -disp(sprintf("The instantaneous value of 1st current is %.2f sin(%.0f*t+%.0f) Amp", rms1*sqrt(2), w,phi1)); -disp(sprintf("The instantaneous value of 2nd current is %.2f sin(%.0f*t%.0f) Amp", rms2*sqrt(2), w,phi2)); -disp(sprintf("The instantaneous value of 3rd current is %.2f sin(%.0f*t+%.0f) Amp", rms3*sqrt(2), w,phi3)); +disp(sprintf("The instantaneous value of 1st current is %f sin(%f*t+%f) Amp", rms1*sqrt(2), w,phi1)); +disp(sprintf("The instantaneous value of 2nd current is %f sin(%f*t%f) Amp", rms2*sqrt(2), w,phi2)); +disp(sprintf("The instantaneous value of 3rd current is %f sin(%f*t+%f) Amp", rms3*sqrt(2), w,phi3)); // //instantaneous values of current at t=100msec=0.1 sec t=0.1; @@ -39,9 +36,9 @@ i1=(rms1*sqrt(2))*(sin(w*t+phi1*%pi/180)); i2=(rms2*sqrt(2))*(sin(w*t+phi2*%pi/180)); i3=(rms3*sqrt(2))*(sin(w*t+phi3*%pi/180)); disp("SOLUTION (iv)"); -disp(sprintf("The instantaneous value of 1st current is %.3f Amp at %.3f Sec", i1, t)); -disp(sprintf("The instantaneous value of 2nd current is %.3f Amp at %.3f Sec", i2, t)); -disp(sprintf("The instantaneous value of 3rd current is %.3f Amp at %.3f Sec", i3, t)); +disp(sprintf("The instantaneous value of 1st current is %f Amp at %f Sec", i1, t)); +disp(sprintf("The instantaneous value of 2nd current is %f Amp at %f Sec", i2, t)); +disp(sprintf("The instantaneous value of 3rd current is %f Amp at %f Sec", i3, t)); disp(" "); // //END |