From 7bc77cb1ed33745c720952c92b3b2747c5cbf2df Mon Sep 17 00:00:00 2001 From: prashantsinalkar Date: Sat, 3 Feb 2018 11:01:52 +0530 Subject: Added new code --- 3871/CH6/EX6.26/Ex6_26.sce | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 3871/CH6/EX6.26/Ex6_26.sce (limited to '3871/CH6/EX6.26/Ex6_26.sce') diff --git a/3871/CH6/EX6.26/Ex6_26.sce b/3871/CH6/EX6.26/Ex6_26.sce new file mode 100644 index 000000000..0d15d7ff9 --- /dev/null +++ b/3871/CH6/EX6.26/Ex6_26.sce @@ -0,0 +1,35 @@ +//=========================================================================== +//chapter 6 example 26 +clc; +clear all; + +//variable declaration +KT = 199; //turn ration +Is = 5; //secondary current in A +Im = 7; //magnetising component of exciting current in A +Ie = 4; //cross-loss component of exciting current in A +delta =0; + +//calculations +KN = 1000/5 //nominal ratio +alpha =atan(Ie/Im) //angle in ° +alpha1 = (alpha*180)/%pi +theta = delta+(((acos(0.8))*180)/%pi) //from figure taken the value of gamma +z = cos((theta*%pi)/180) +z1 = sin(((theta)*%pi)/180) +Kc = KT+(((Ie*z)+(Im*z1))/Ie) //actual current in A +e = ((Kn-Kc)/Kc)*100 //ratio error +b =(180/%pi)*(((Im*z)-(Ie*z1))/(KT*Is)) +theta1 = delta-(((acos(0.8))*180)/%pi) //from figure taken the value of gamma +z11 = cos((theta1*%pi)/180) +z12 = sin(((theta1*%pi)/180)) +Kc1 = KT+(((Ie*z11)+(Im*z12))/Is) //actual current in A +e1 = ((Kn-Kc1)/Kc1)*100 //ratio error +b1 =(180/%pi)*(((Im*z11)-(Ie*z12))/(KT*Is)) + + +//result +mprintf("ratio error = %3.2f percentage",e); +mprintf("\nphase angle error = %3.1f °",b); +mprintf("\nratio error = %3.2f percentage",e1); +mprintf("\nphase angle error = %3.2f percentage°",b1); -- cgit