KENNELLY. — EQUIVALENT CIRCUITS OF COMPOSITE LINES. 69 



It will be seen that there is a certain symmetry in these changes that 

 assists their application. Moreover, it is possible, after consulting the 

 Table, to select in some particular case a method which avoids addi- 

 tional computation. Thus, in dealing with an intermediate leak, the 

 first method calls for the application of the impedance ratio across the 

 leak, to the formula for p" ; whereas the second method calls for no 

 change in its formula. 



Table showing Changes made by Casual Loads in the Composite-Line 



Formulas for the Equivalent TT-Architrave and 



Equivalent T-Leak. 



The ratios R g xfRgN and Gg M /G gN denote respectively the ratios of sending- 

 end impedance and sending-end admittance across the load, the ratio being 

 taken in each case such that in the D. C. case it is greater than unity. 



The far end is in all cases the end of the composite line which is to be con- 

 sidered as freed or grounded for the purposes of the computation, and the 

 near end is the opposite end, or the end towards which the line-angles are 

 developed. 



It has been assumed for the purposes of the Table that the A end of the 

 line happens to be the near end in all cases, and the N end the far end. 



