K FORMULAS 27 



compared with the fundamental formulas. As these ex- 

 amples have covered the range of practicable transmission 

 lines, a sound basis is afforded for the estimate of the 

 accuracy of the K formulas and for the statement that 

 they are sufficiently reliable for all ordinary engineering 

 purposes in the calculation of electric power transmission 

 lines. 



PROPERTY OF 



U t 



JAN 1 2 191 



* 



