The figure below shows the per-phase Open Circuit Characteristics (measured in $\text{V}$) and Short Circuit Characteristics (measured in $\text{A}$) of a $14 \: kVA$, $400 \: V$, $50 \: Hz$, $4$-pole, $3$-phase, delta connected alternator, driven at $1500 \text{ rpm}$. The field current, $I_{f}$ is measured in $\text{A}$. Readings taken are marked as respective $(x, y)$ coordinates in the figure. Ratio of the unsaturated and saturated synchronous impedances $\left ( Z_{s\left ( unsat \right )}/Z_{s\left ( sat \right )} \right )$ of the alternator is closest to:
- $2.100$
- $2.025$
- $2.000$
- $1.000$