Chapter 24, Problem 44P

The Y-Y system in Fig. 24.53 has a balanced load and a line impedance ${\text{Z}}_{\text{line}}\text{ = 4Ω + j20}\Omega$ , If the line voltage at the generator is 16,000 V and the total power delivered to the load is 1200 kW at 80 A, determine each of the following:

a. The magnitude of each phase voltage of the generator.

b. The magnitude of the line currents.

c. The total power delivered by the source.

d. The power factor angle of the entire load "seen" by the source.

e. The magnitude and angle of the current if $E_{AN}=E_{AN}\angle 0^o.$

f The magnitude and angle of the phase voltage V_an

g. The impedance of the load of each phase in rectangular coordinates.

h. The difference between the power factor of the load and the power factor of the entire system (including Z_line.

i. The efficiency of the system.