EXAMPLE OF ALTERNATOR DESIGN 



34' 



area of the curve Fig. 144 -f- T, which is 3,975 volts. The form 

 factor (Art. 101) is ~ = 1-10. It must not be forgotten that 



10 20 30 40 50 60 70 80 90 100 110 120 130 140 160 160 170 180 10 20 

 Position of Center of Phase Belt on Pole Pitch.(Electrical Degrees) 



Fio. 143. Wave-shape of e.m.f. developed in armature windings of 8000 

 k.v.a. turbo-generator on 80 per cent, power factor full-load output. 



Fio. 144. E.m.f. wave of Fig. 143 re-plotted to polar coordinates. 



the machine under consideration is Y-connected, and the wave- 

 shape of the potential difference between terminals will be 



