Ramsay Hydraulics & Pneumatics Flashcards
6 cards from real Ramsay Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Ramsay Hydraulics & Pneumatics flashcards as text
If a hydraulic cylinder's bore diameter is doubled while pressure stays the same, the force output will:
Answer: Quadruple
Force equals pressure times area (F = P × A); doubling the diameter quadruples the circular area, so force increases fourfold.
What type of valve permits flow in one direction only and automatically blocks reverse flow?
Answer: Check valve
A check valve allows fluid or air to flow in one direction and automatically closes to prevent backflow when flow reverses.
Which seal type is most commonly used to prevent internal bypass leakage in hydraulic cylinders?
Answer: O-ring or piston seal
O-rings and piston seals maintain a pressure-tight barrier between both sides of the cylinder piston to prevent internal fluid bypass.
Cavitation damage in a hydraulic pump is primarily caused by:
Answer: Insufficient fluid supply or excessive vacuum at the pump inlet
Cavitation occurs when the pump inlet starves for fluid, forming vapor bubbles that implode violently and erode pump surfaces.
What is the primary purpose of a directional control valve in a fluid power circuit?
Answer: To route fluid flow and control actuator movement direction
A directional control valve routes pressurized fluid to selected actuator ports, determining which direction the actuator extends or retracts.
Which maintenance practice most effectively extends the service life of hydraulic and pneumatic systems?
Answer: Regular fluid or air quality checks and scheduled filter replacement
Routine maintenance including fluid analysis, air moisture monitoring, and timely filter changes prevents contamination-driven component failures.