A 2000 V single-phase synchronous generator is being used as abackup
generator outside a diagnostic center. When the generator
terminals are short-circuited and a field excitation current of 2.5A is passed, the
ammeter between the terminals read 100 A of full load current. Ifthe terminals
of the same generator are opened and the voltage across them ismeasured using
a voltmeter, we get the value of 500 V with the same excitationcurrent. The
armature resistance is 0.8 ohms.
Determine the voltage regulation of this generator if it isdelivering 100 A
during normal operation with unity power factor, 100 A with 0.8leading PF,
and with 0.71 lagging PF.
(Hint: Synchronous Impedance = (0.C Voltage) / (S.C Current))
