ELECTRICAL MEASUREMENTS 



and cause great modification of the voltage wave form. Using 

 all the secondary coils in series, the 50,000-volt connection, the 

 results shown in Fig. 437 were obtained. Fig. 438 shows the 



Fio. 435. Open-circuit voltage of generator. 



FIG. 436. P.D. and exciting-current waves, transformer only. 



FIG. 437. P.D. and exciting-current waves when cable having a capacity of 

 0.13 M.F. is attached to transformer; 50,000-volt connection used. 



results when the secondary coils were used, two in series and two 

 in parallel, the 25,000-volt connection. 



When the change was made from the 50,000 to the 25,000-volt 



