ALTERNATING GENERATORS AND SYNCHRONOUS MOTORS. 23 
take the constant K = 120, on account of the field coils 
being very near together, as may be seen from the sketch. 
204. By means of Equation 40 of the Instruction Book, caleu- 
late the temperature rise on the armature. 
205. By means of Equation 39 and Fig. 64 of the Instruction 
Book, compare the economy in dimensions with standard 
designs. 
206. Collect in tabular form the different data of this single phase 
alternator. As an example take Table 23 of the Instruc- 
tion Book. | 
Printed in U. &. A. 
