A 100KVA, 220V, star connected alternator is loaded at full-load and at 60% pf lagging. The effective AC resistance per

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A 100KVA, 220V, star connected alternator is loaded at full-load
and at 60% pf lagging. The effective AC resistance per phase is
0.01411Ω. If the synchronous reactance is 4.5 times the effect of
the armature leakage reactance wherein the later is 0.046 Ω per
phase,
find (a) the phase voltage which would be generated at the
load
(b) What no-load open circuit phase voltage is required to
circulate full-load current at short-circuit condition with
no-change made at the speed and field current?
(c) short answer. What is the alternators terminal phase voltage
at shorted load condition?
Use as the
reference phasor.