What are hydraulics used for?

Answer 1

there are three basic means of power transmission

mechanical

electrical and

fluid power

All these three are power transmission mediums

mechanical - short distance very advantageous.

electrical - long distance eg: hundreds of kilometres of electric grids.

hydraulics - greater distance than the mechanical and shorter than the electrical

They mostly substitute the mechanical power transmitters.

Here there are no moving links as in mechanical medium only moving medium that is fluid.

very high force multiplication possible.

only fluid power capable of giving constant force or torque output at various speeds.

they have very high power to weight ratio than there mechanical counterparts.

a simple, compact, reliable, safe system possible only with fluid power.

their control is very simple.

Answer 2

An Hydraulic system (and a pneumatic one as well) is simply a system using fluid to transfer energy from one point to another.

When I press the brake pedal, the brake cylinders at the wheels operate. Coupled together by an hydraulic system.

Answer 3

Depending on the system it could be any liquid. Some older metering systems actually used Mercury as a motive fluid (its expansion ability, and its weight for vacuum systems made it very useful without using pumps). Most hydraulic systems use oil, of one type or another. And high volume systems use water.

Answer 4

Hydraulics can be used basically everywhere in day to day life. They are used in your heart, in car brakes, in water pistels and also in vehicles like diggers and cranes.

Answer 5

Mainly vehicles, has to do with engineering.

Answer 6

Hydraulics are used in air planes, cars, boats, constructional machines.

Answer 7

in hydraulic system pascals law can be used

Answer 8

Hydraulic system is used to swim