Question

the amount of hydraulic pressure in the power steering system is controlled by a ______ located on the input shaft of the steering gear.

a. flow - control valve

b. fluid flow valve

c. pressure relief valve

d. rotary valve

Explanation:

A pressure relief valve is designed to regulate and limit the maximum hydraulic pressure in a system, and in power steering systems, this valve (often integrated with the steering gear's input shaft area) controls the hydraulic pressure to prevent over-pressurization. Flow-control valves manage fluid flow rate, fluid flow valves are general flow components, and rotary valves handle directional flow, none of which match the pressure control function described.

Answer:

c. Pressure relief valve