Answer :

Final answer:

Based on the calculations and estimations given, the minimum oil pressure at idle of P-23 is best approximated to be 20 PSI (A), as it is the closest to the estimated values of around 26 to 27 PSI.

the right answer is (A) 20 PSI

Explanation:

The question asks about the minimum oil pressure at idle of P-23. To determine this, it is critical to analyze the provided context and calculations that touch upon various aspects of pressure, such as hydraulic press operations, a P-V graph estimation, and the Boyle's law equation.

However, based on the information provided and the estimations from different methods including P-V graph and other pressure-related calculations, it seems the answer revolves around 26 psi to 27 psi.

Given the options (A) 20 PSI, (B) 30 PSI, (C) 40 PSI, (D) 50 PSI, the closest and most accurate option based on the estimations and the relevant information is (A) 20 PSI, which would be considered as the minimum oil pressure at idle for P-23, even though the estimations are slightly above the 20 PSI, none of these align perfectly with the given options.

the right answer is (A) 20 PSI

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