Prepare for the Automotive Service Technician Period 1 exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

In a hydraulic assist system, pressure is created by which mechanism?

In a hydraulic assist system, pressure comes from forcing fluid through a restriction. The pump provides the flow, but the pressure builds up because the fluid encounters resistance as it passes through valves, orifices, and narrow passages in the circuit. The tighter or more restrictive the path, the higher the pressure the pump must generate to push the fluid through. Temperature rise and accumulation of fluid are not how pressure is created; they’re related to losses and volume, respectively. Pump displacement affects how much fluid is moved, not the fundamental mechanism that creates pressure.

In a hydraulic assist system, pressure comes from forcing fluid through a restriction. The pump provides the flow, but the pressure builds up because the fluid encounters resistance as it passes through valves, orifices, and narrow passages in the circuit. The tighter or more restrictive the path, the higher the pressure the pump must generate to push the fluid through. Temperature rise and accumulation of fluid are not how pressure is created; they’re related to losses and volume, respectively. Pump displacement affects how much fluid is moved, not the fundamental mechanism that creates pressure.