🔍 Key Concepts

• Hydraulic schematic symbols for mechanical elements such as actuators and energy-storing devices • How a zig-zag or coiled line is commonly used in diagrams to represent elasticity • Difference between an electrical symbol and a hydraulic/mechanical symbol

💭 Think About

• In a hydraulic system, which listed component would be drawn as something that can store or release force when compressed or stretched? • Which choice belongs more to an electrical circuit symbol set rather than a hydraulic schematic? • If a line looks like it is bent back and forth, what kind of component behaves in a similarly flexible, elastic way?

✅ Before You Answer

• Eliminate the option that is clearly an electrical component, not hydraulic. • Ask which of the remaining components actually provides elastic or restoring force in a hydraulic setup. • Match the zig-zag, back‑and‑forth line in Fig. A with the component whose function best fits that style of symbol.