Assume that the field current of the generator in Problem 4-2 is adjusted to achieve rated voltage (13.8kV) at full load conditions in each of the questions below.
(a) What is the efficiency of the generator at rated load?
(b) What is the voltage regulation of the generator if it is loaded to rated kilovoltamperes with 0.9-PF-lagging loads?
(c) What is the voltage regulation of the generator if it is loaded to rated kilovoltamperes with 0.9-PF-leading loads?
(d) What is the voltage regulation of the generator if it is loaded to rated kilovoltamperes with unity-power-factor loads?