Disadvatage of hydraulics?

• A. Incompatible with gravity
• B. Hard to control temperature
• C. Subject to leakage
• D. High energy consumption

Answer: (C)

A primary disadvantage of hydraulic systems is their tendency to leak. Because these systems operate under high pressure with fluid moving through seals, hoses, and fittings, wear, poor seal integrity, or damaged components can let fluid escape. Leaks waste hydraulic fluid, cause a drop in system pressure and performance, and demand additional maintenance. In aircraft launch and recovery equipment, a leak can compromise control, safety, and readiness, and it can create environmental and fire hazards if the fluid is flammable.

Other options aren’t as universal a drawback. Gravity isn’t inherently incompatible with hydraulics—these systems can function in various orientations. Temperature control is a challenge in some designs, but it’s usually managed with heat exchangers and fluid selection rather than being a defining flaw. High energy consumption can occur, but hydraulic systems can be efficient with proper design; leakage remains the most immediate and common reliability concern.