🔍 Key Concepts

• Hydraulic energy storage and how pressure can be stored and then released • Difference between contaminant control (filters, strainers) and energy storage devices • How hydraulic systems deal with pressure fluctuations and shock loads

💭 Think About

• Which component in a hydraulic system is normally responsible for removing dirt or contamination, and is that the same job as an accumulator? • If you suddenly need extra force from a hydraulic system (for example, a quick heavy movement), what kind of device could supply a burst of pressurized fluid? • Think about what ‘potential energy’ means in physics—how could hydraulic fluid and compressed gas work together to store it?

✅ Before You Answer

• Identify which choice describes energy storage under pressure, not cleanup or warming of the fluid • Eliminate any options that sound like the job of a filter, strainer, or drip pan, rather than a pressure vessel • Check which option clearly mentions pressure or a function that would help smooth out sudden demands or shocks in the hydraulic system