Question

slight rotation of the ____ gives a small amount of power steering assistance, which becomes progressively greater as the torsion bar flexes and more assistance is needed.
a. flow - control valve
b. rotary valve
c. pressure relief valve
d. fluid flow valve

Explanation:

This component is central to power steering systems, where its slight rotation (linked to the torsion bar flex) modulates hydraulic assistance, increasing it as more steering effort is required. Other valve types serve different hydraulic functions: flow-control valves regulate flow rate, pressure relief valves limit system pressure, and fluid flow valves are a general non-specific term not tied to this power steering mechanism.

Answer:

b. Rotary valve