CM Advanced Ch.10

Question 1

In automotive and construction equipment, what terms describe a method of transmitting power from one place to another through the use of a liquid or gas?

Answer 1

Hydraulic or pneumatic

Question 2

What is that branch of science that deals with the study and use of liquids, as related to the mechanical aspects of physics?

Answer 2

Hydraulics

Question 3

What is that branch of science that deals wit the study and use of air and other gases, as related to the mechanical aspects of physics?

Answer 3

Pneumatics

Question 4

What is the push or pull of an object?

Answer 4

Force

Question 5

What is the amount of force distributed over each unit on the area of an object?

Answer 5

Pressure

Question 6

What is defined as any substance made up of small particles or molecules that have the ability to flow or move easily?

Answer 6

Fluid

Question 7

What is a substance in which the molecules are separated by relatively large spaces?

Answer 7

Gas

Question 8

Who was a noted French physicist who discovered that a closed container of fluid could be used to transfer force from one place to another or to multiply forces by its transmission through a fluid?

Answer 8

Pascal

Question 9

The heart of any hydraulic system is it’s what?

Answer 9

Pumps

Question 10

Gears, lobes, and what else’s are commonly used as elements in rotary pumps?

Answer 10

Vanes

Question 11

What style pump is simple in design and finds wide use in low-pressure hydraulic systems?

Answer 11

Gear

Question 12

What pumps are most commonly used for applications requiring high pressures and accurate control of the discharge volume?

Answer 12

Reciprocating

Question 13

What pump eliminates the need for a system pressure regulator?

Answer 13

Variable volume

Question 14

The piston stoke of the pump is determined by the angle of the what?

Answer 14

Cam plate

Question 15

What transforms fluid pressure into mechanical energy?

Answer 15

Hydraulic actuators

Question 16

What is a device that converts fluid power to linear or straight-line force and motion?

Answer 16

Actuating cylinder

Question 17

What type of cylinder is used primarily for push functions father than pull?

Answer 17

Ram

Question 18

Why type of cylinder is normally used for applications that require both push and pull functions?

Answer 18

Piston

Question 19

Most piston type actuating cylinders are what?

Answer 19

Double-acting

Question 20

What is a device that converts fluid power to rotary motion and force?

Answer 20

Fluid power motion

Question 21

The gears of the gear-type motor are of the external type and may be of the spur, helical, or what type of design?

Answer 21

Herringbone

Question 22

What is the most common design of the piston type of motor?

Answer 22

Axial

Question 23

Once the pump has begun to move the fluid in a hydraulic system, what are usually required to control, monitor, and regulate the operation of the system?

Answer 23

Valves

Question 24

What valve is incorporated in most hydraulic systems and acts as a safety valve, used to prevent damage to the system in case of over-pressurization?

Answer 24

Relief

Question 25

What valve is designed to remove the system load from the pump once system pressure has been reached?

Answer 25

Pressure regulating

Question 26

Selector valves may be actuated mechanically, manually, electrically, hydraulically, or what other way?

Answer 26

Pneumatically

Question 27

What valves are probably the most used valves in fluid power systems?

Answer 27

Check

Question 28

What is the fluid storehouse for the hydraulic system?

Answer 28

Reservoir

Question 29

What are incorporated in some Hydraulic systems to store a volume of liquid under pressure for subsequent conversion into useful work or to absorb rapid fluid pulsations when valves are operated repeatedly?

Answer 29

Hydraulic accumulators

Question 30

In the separator Type of air-operated accumulator, Armand is provided to separate the gas from the liquid. The three styles of separators are bladder(bag), diaphragm, and what else?

Answer 30

Piston

Question 31

Although there are several different modifications of diaphragm style accumulator, It is usually what in shape?

Answer 31

Spherical

Question 32

What part in a hydraulic system is a screening or straining device used to remove impurities from the hydraulic fluid?

Answer 32

Filter

Question 33

The most common filter elements used in CESE equipment are wire mesh, micronic, and what else?

Answer 33

Porous metal

Question 34

What is a unit of measurement used to express the degree of filtration?

Answer 34

Micron

Question 35

A micron equals one millionth of a meter or what amount of an inch?

Answer 35

0.0000394

Question 36

The normal lower level of visibility to the naked eye is about how many microns?

Answer 36

40

Question 37

When it is used in CESE hydraulic systems, the micronic element normally prevents the passage of solids of how many microns or greater in size?

Answer 37

10

Question 38

In many micronic filters, the relief valve is set to open when the differential in pressure exceeds what psi?

Answer 38

50

Question 39

How many types of hydraulic systems are used in Support equipment?

Answer 39

2

Question 40

Every hydraulic system has two major parts or sections: the power section and the what other section?

Answer 40

Actuating

Question 41

What do all hydraulic pumps have on common?

Answer 41

Precision construction

Question 42

What contamination class includes such particulars as dust, dirt, core sand weld splatter, machining chips, and rust?

Answer 42

Abrasive

Question 43

What products usually called sludge, have no abrasive properties?

Answer 43

Oil-oxidation

Question 44

Contaminants created during system operation are of two general types: what are they?

Answer 44

Mechanical and chemical

Question 45

What is the chief source of chemical contaminants in hydraulic liquid?

Answer 45

Oxidation

Question 46

Hydraulic liquids that have been subjected to excessively high temperatures (above what temperature) break down in substance, leaving minute particles of asphalting suspended in the liquids?

Answer 46

250°F

Question 47

One of the most common foreign-fluid contaminants is what?

Answer 47

Water

Question 48

What must not be used for flushing hydraulic systems in active service, because of its poor lubricating qualities and it's contaminating effect on the subsequent till of hydraulic liquid?

Answer 48

Diesel fuel oil