Hydraulics Flashcards Preview

MK3 > Hydraulics > Flashcards

Flashcards in Hydraulics Deck (388)
Loading flashcards...
1

The engineering science pertaining to the use of liquid pressure and flow to transmit power, multiply force, and modify motion

Hydraulics

2

Pressure applied to a confined fluid is transmitted undiminished an all direction and acts with equal force on equal areas and at right angles to them

Pascal's Law

3

Three parts of the formula triangle for Pascal's law

Force, Area, Pressure

4

What is at the top of the formula triangle for Pascal's law?

Force

5

The measure of a bounded region or plane

Area

6

Anything that tends to produce or modify motion

Force

7

Force per unit area

Pressure

8

Area is usually expressed in ___

Square inches

9

Force is usually expressed in ___

Units of weight

10

Pressure is measured in ___

PSI

11

Two working surface areas inside a cylinder

Cap or blind end area
Net or rod end area

12

Hydraulic pressure working on the cap end forces the piston rod to ___

Extend

13

Hydraulic pressure working on the net area forces the piston rod to ___

Retract

14

Cap end area =

D^2 x .7854

15

The amount of weight a cylinder will push or pull

Working force

16

Scientific unit of pressure roughly equal to the atmospheric pressure on earth at sea level

Bar

17

psi =

bar x 14.5

18

bar =

psi / 14.5

19

The ability or capacity to do work

Energy

20

Two types of energy

Potential
Kinetic

21

Also known as stored energy

Potential energy

22

This form of energy is present in a hydraulic system in the form of fluid pressure

Potential energy

23

Also known as energy in motion

Kinetic energy

24

This form of energy is present in a hydraulic system in the form of fluid flow

Kinetic energy

25

Energy can neither be created nor destroyed, but instead will simply be changed from one energy form to another

Law of conservation of energy

26

In hydraulics the ___ provides the mechanical advantage

Difference in piston areas

27

Hydraulic symbols are authorised and controlled by ____ under ___

International Standards Organisation (ISO)
ISO Code 1219-2

28

Establishes principles for the use of symbols and specifies basic symbols and rules for devising functional symbols

ISO Code 1219-2

29

ANSI

American National Standards Institute

30

ISO

International Standards Organisation