Electrical Engineering > GATE 2020 > Synchronous Machines
The figure below shows the per-phase Open Circuit Characteristics (measured in V) and Short Circuit Characteristics (measured in A) of a 14 kVA, 400 V, 50 Hz, 4-pole, 3-phase, delta connected alternator, driven at 1500 rpm. The field current, If is measured in A. Readings taken are marked as respective (x, y) coordinates in the figure.
Ratio of the unsaturated and saturated synchronous impedances (Zs(unsat) / Zs(sat)) of the alternator is closest to:
Ratio of the unsaturated and saturated synchronous impedances (Zs(unsat) / Zs(sat)) of the alternator is closest to:
Correct : a
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