Mechanical Engineering Interview Question:

What are the differences between pneumatics and hydraulics?

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* a) Working fluid: Pneumatics use air, Hydraulics use Oil
* b) Power: Pneumatic power less than hydraulic power
* c) Size: P components are smaller than H components
* d) Leakage: Leaks in hydraulics cause fluid to be sticking around the components. In pneumatics, air is leaked into the atmosphere.
* e) Pneumatics obtain power from an air compressor while hydraulics require a pump
* f) Air is compressible, hydraulic oil is not
Submitted by: Administrator