A4-pole, 60hz, y-connected, 3-phase generator has a regulated line voltage
of vab = 450∠30° vrms, a synchronous reactance of 0.05-ω, a stator resistance of 0.003ω,
and lsf = 0.018 h. the balanced 3-phase load draws 3 mw at a lagging 0.75 power
factor.
a. compute the 3-phase complex power of the load (magnitude and angle).
s3p =
b. compute the generator phase current (magnitude and angle; hint: the angle of the
current should be negative for the load to have a lagging power factor).
ias =
c. find the required excitation voltage.
ea =
d. calculate the required field current.
if =
e. state the required speed of the prime mover (rpm) nm =