ALTERNATING GENERATORS AND SYNCHRONOUS MOTORS. 141 
From the above results it will be seen that the calculated 
and actual test results are very similar. 
245. Determination of Voltage Drop.—The voltage drop 
and the necessary excitation should be calculated for an 
EXCTIATION LV AMPERE TURIS. 
3 a al 
3500 
3000 
—_=—* ‘ 
8 
TERMIWAL PRESSCRELV VullTS:, 
SN 
| Kot 
N 
\. 
ae , 
we 
y 
SHU COIRCUTT CURRENT LN ANPE. 
8 
Fie. °70.—CHARACTERISTICS OF A 400 KVA., 3,500 VoLts, 
50-CrcLE 3-PHASE ALTERNATOR. 
external load having a power factor of 0.8, as the alter- 
nator is intended to work on a power cireuit. In 
accordance with the method developed in Pars. 130. to 
154, the curve of the square of the apparent magnetic 
