What does hydraulic action mean?

Question

This is what i got set for home work.
i kno its sad but guys please help
what does this mean?

Answer 1

hydraulic action is the force applied due to pressure of a liquid ( usually water) hydraulic machines r based on this priciple. if pressure is applied to a confined liquid, it is distributed equally throughout the liquid. so, if u connect 2 containers with a pipe, fill water in them and then apply the force on container with more area, then the force on the second container is more. this is because of hydraulic action.
let container with less area be P with area A1 and that with less area be Q with area A2.
if force F1 is applied on P, then pressure X1 on P + F1/A1
pressure X2 on Q is F2/A2
since the pressure in P and Q will be equal,
X1 = X2
F1/ A1 = F2/A2
F1xA2 = F2xA1
so if A1 F2 < F1
if u have any more problem, mail me.

Answer 2

The term 'Hydraulic Action' is applied to any device that is operated by a liquid.

The liquid may be free flowing as in an Undershot/Overshot Waterwheel where a stream or river is diverted to operate:

1/ The wheel of of a watermill
2/ The turbine driving an electric generator

In an ENCLOSED system the liquid acts in the same manner as a mechanical lever where a small input force may be 'Intensified' to produce a larger output force.

Pressure = Force/Area

A small diameter cylinder has a piston of area 'a' and the force applied is the Effort 'E'

The outlet pipe is connected to a large diameter cylinder having a piston of area 'A' bearing a load 'W'

The pressure in a liquid is the same at any point in the liquid (in a closed system) therefore:

pressure = E/a = W/A and by transposition

W = A/a x E and the ratio of the areas is equivalent to the ratio of the Load and Effort thus a small force can produce a larger force.

However, since the volume of liquid displaced is the SAME then since: Volume = Area x Distance moved

a x h = A x H therefore H = a/A x h i.e.

Distance moved by the Load is less than the distance moved by the Effort.

Examples are: A hydraulic Jack. car brakes, hydraulic press (in the manufacturing industry) and a hydraulic guillotine.

Hydraulic action is possible because water and other liquids e.g. brake fluid are virtually 'incompressible'

N.B. In time a brake fluid may absorb some gases and some compression occurs in the fluid. The brakes then become 'spongy' and are a source of danger.

Answer 3

The previous explanation on hydraulics is very good.

I will just explain some applications

Hydraulic jack: It has a ram of large area and a piston of small area. When oil (actually all hydraulic equipments these day uses oils which are less compressable. It has further advantage that it does not rust iron) is pumped into a cylinder fitted with ram of large area then the thrust (pressure x area) on the ram becomes large. This way one is able to lift large weights (100 tons - 200 tons) using the hydraulic jacks.

Hydraulic stearing and brakes in automobiles.

Hydraulic press.

Applications are different but the principle is the same.

Answer 4

Hydraulic action is the effect that a liquid has on other things around them. For example the way that waves break down rocks and cliffs.

Answer 5

Hydraulic action is a form of mechanical weathering caused by the force of moving water currents rushing into a crack in the rockface. The water compresses the air in the crack. As the wave retreats, the highly pressurised air is suddenly released with explosive force, capable of chipping away the rockface over time. Thus, the crack is gradually widened so the amount of compressed air increases, and hence the explosive force of its release increases. Thus, the problem intensifies (a 'positive feedback' system).

Answer 6

This Site Might Help You.

RE:
What does hydraulic action mean?
This is what i got set for home work.
i kno its sad but guys please help
what does this mean?

Answer 7

hydraulic means force from water. hydro = water. something moves because the force of water makes it move. like a mill wheel grinding grain from the stream that moves it

Answer 8

is this 4 geography?? hydraulic action is one of the four processes that can erode a river. this is when the sheer force of the river dislodges particles from the rivers banks and bed

Answer 9

POWERED BY THE WATER