9.2

Question 1

What does a pressurized fluid in a enclosed system allow u to do?

Answer 1

Allows us to transmit force from one end of the system to the other

Question 2

Static pressure?

Answer 2

A pressure created inside a closed system that is capable of transmitting a force, even though the fluid is stationary

Question 3

Dynamic pressure?

Answer 3

The pressure of a moving fluid, which exerts a force and completes work

Question 4

Hydraulics?

Answer 4

The study and use of pressure in liquids

Question 5

Hydraulic system?

Answer 5

A fluid system that uses a pressurized liquid transmit force and complete work

Question 6

What is the purpose of constructing a fluid system?

Answer 6

By Controlling pressure, we can make fluids go where we want do work for us

Question 7

What do most hydraulic systems use to move the fluid ?

Answer 7

Pumps

Question 8

Pump?

Answer 8

A device that moves fluids

Question 9

Most common used pump?

Answer 9

Piston pump

Question 10

Valve?

Answer 10

A device that controls or directs the flow of fluid through a system

Question 11

When valves are used in particularly open positions, what does it help u to do?

Answer 11

Allows u to regulate the pressure

Question 12

Check valve

Answer 12

A specialized type of valve that allows movement in only one direction

Question 13

What are the different types of valves ?

Answer 13

Gate valve
Butterfly valve
Ball valve

Question 14

What do simple machines do?

Answer 14

Change direction of force
Change the magnitude, or multiply, the force
(Mechanical advantage)

Question 15

Hydraulic multiplication?

Answer 15

The process of using a hydraulic system to multiply the Input force to gain a mechanical advantage

Question 16

Hydraulic lift?

Answer 16

A device that uses hydraulic multiplication

Question 17

How do u achieve the force of hydraulic multiplication?

Answer 17

The surface area of the input pisten needs to b smaller than the output pisten

Question 18

What is it about hydraulic systems that allows you to this multiplication of a force?

Answer 18

Notice the pressure is the same as the input side as it is at the output side
Liquids are incompressible, so the applied force is not lost or used up, it is transferred

Question 19

Disadvantages to hydraulic systems allowing you to this multiplication of a force?

Answer 19

To gain mechanical advantages, u sacrifice distance

Question 20

Problems with hydraulic systems?

Answer 20

Every twist and turn in the pipe increases th systems resistance to flow
Every spot one pipe connects to another pipe or to a fitting can leak
The size of the pump affects the pressure in the system
The liquids flow can be slowed down by any obstructions

Question 21

What does the study of gases lead to?

Answer 21

Pneumatics

Question 22

Pneumatics?

Answer 22

The study and use of pressure in gases

Question 23

What are fluid systems that use gases called?

Answer 23

Pneumatics systems

Question 24

Pneumatic systems?

Answer 24

A fluid system that uses a pressurized gas to transmit force and complete work

Question 25

Can pneumatics systems be used to transmit an applied force and why?

Answer 25

No pneumatics can’t be used to transmit an applied force because any force you apply to the gas goes into compressing the gas and is not transmitting

Question 26

Difference between pneumatic systems and hydraulic systems

Answer 26

Hydraulic
-liquids are incompressible, so very little force is lost
-can be used at very high pressure
Pneumatic
-gases are compressible, so gas can be pressurized in a tank, transported, them used somewhere else to do work
-operate at much lower pressures, so generally safer