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What is hydraulic efficiency?
Hydraulic efficiency is the rate at which a hydraulic consumes gases and liquids to find different ways to make our lifestyles more efficient.
Why are liquids easilier to be compressed in hydraulic brakes than gases?
You've got it all wrong, liquids can't be compressed - only pressurized. Gases OTOH can be compressed. It's like the difference between poking at something with a stiff rod, or with a sponge. With a liquid, whatever force you put in at one end is what you get out at the other - just what you want if you're planning to build a closely controlled system like brakes.
What property of gases makes the brakes fail if air gets into the brake fluid?
Gas is compressible while liquid is not. So if you get air in your brake line, which is a hydraulic system, it will not be able to exert the needed pressure on the brake pads making them less effective.
Why is the pneumatic system less reliable then the hydraulic system?
Gases can be compressed. Liquids can't.
Application of compressibility requiring liquid and gases?
Vehicle breaks hydraulic mechanism , refrigeration
Why do hydraulic systems only work with liquids not gases?
Because the gas can not deliver power. Pressure of the gases are compressed. Liquids do not compress well and transmit power.
Why are liquids used in brakes instead of gases?
Because liquids can't be compressed. Whatever movement you put in at one end you get back at the other. Gasses can be compressed, like a spring, which is kinda awkward if you want to build something that can be closely controlled.
What is a coast erosion?
It is mainly hydraulic action- when water and air get into crack but as gases don't compress it burst out bringing rock with it
Why are liquids sometimes more practical to use in a hydraulic system than gases?
Because liquids cannot be easily compressed into a smaller space.
Is Uranus terrestrial?
No, it is made of gases (hydrogen) instead of rocks.
Why gases compress?
Gases are compressible because their molecules bounce off of each other instead of sticking together. The molecules of solids and liquids stick together instead of moving freely.
Why do hydraulic systems use liquids?
Fluids are incompressible, relatively speaking, hence the pressure applied through the system is directly transmitted to the object which you want to lift. If you used a gas, you would waste a lot of energy compression the gas-hence the system would be inefficient. There's another reason. Hydraulic systems using gases instead of liquids can be very efficient indeed--witness the brakes on a big truck. They are ALL specifically, air--powered, and they work very well. The compressor in a gas system doesn't enter into efficiency calculations because in a liquid system, with the exception of something like car brakes, there's a pump. And in some cases you can't use a liquid hydraulic system. On a big printing press, there are a lot of compressed roller lifters because no one wants a book that has hydraulic fluid spattered on the pages, and if your press springs a leak in the roller lifters that is what will happen. The biggest advantage a liquid hydraulic system has is the nearly complete lack of lag. In a fluid power (the industrial term for a hydraulic system using liquid fluids) system, the whole system is charged with fluid. When you press against the fluid at one end, or pump some more in depending on what the system is, the force is instantaneously transferred to the thing you are attempting to move. OTOH, in an air system you've got to fill the lines with air before anything moves. (This is another reason why you shouldn't cut off semis on the interstate-at 55mph the truck has no brakes for 32 feet after the driver steps on the pedal.)
