What is the lower bound of the normal hydraulic pressure range?

• A. 2800 psi
• B. 2900 psi
• C. 3000 psi
• D. 3200 psi

Answer: (A)

In a hydraulic system, the normal operating range has both a lower and an upper limit. The lower bound is the minimum pressure at which the system can reliably generate the force needed to move components and maintain proper function. If pressure drops below this point, actuators may not move fully or stall.

Given the typical range from 2800 to 3200 psi, the smallest value—2800 psi—defines the lower bound. The other options (higher numbers) sit above that minimum and therefore aren’t the starting point of the normal range; 3200 psi would be near the upper limit.