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+//CHAPTER 2- STEADY-STATE ANALYSIS OF SINGLE-PHASE A.C. CIRCUIT
+//Example 25 // read it as example 24 in the book on page 2.78
+
+disp("CHAPTER 2");
+disp("EXAMPLE 25");
+
+//VARIABLE INITIALIZATION
+V=350                           //Amplitude in Volts
+f=50                            //frquency in Hz 
+t1=0.005                        //sec after wave becomes zero again
+t2=0.008                         //sec after waves passes tgrough 0 in -ve direction
+//SOLUTION
+//e=Esinwt
+//solution (a)
+//RAmplitude at 1/600 second after it becomes zero
+w=f*2*%pi;                      //angular speed
+v1=V*sin(w*t1);
+disp("SOLUTION (a)");
+disp(sprintf("Voltage after %f sec is %3f A",  t1,v1)); 
+disp(" "); 
+//solution (b)
+//since wave will pass in -ve direction after half period
+hp=1/(2*f);                     //half period, the point where sine beomes zero again after origin
+t=hp+t2;
+v2=V*sin(w*t);
+disp("SOLUTION (b)");
+disp(sprintf("The voltage would be  %f V %3f  sec", v2,t));
+// 
+//END
+