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Final > Pneumatic > Flashcards

Pneumatic Flashcards

1
Q

What happens when air is compressed to a smaller volume

A

It increases its pressure

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2
Q

A dynamic air compressor is frequently referred to as a

A

Non-positive displacement

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3
Q

The size of the filter is generally determined by the machines what

A

Intake requirements

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4
Q

Water also tends to promote rust and scale buildup in pipes and fittings for these reasons corrosion resistant piping should be used what does this do

A

Extenze the pipe service life

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5
Q

When a volume of air is reduced by a compressor its pressure

A

Increases

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6
Q

Compressors classified according to operation identified or referred to as positive displacement and blank compressors

A

Dynamic

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7
Q

Reciprocating compressor’s are classified according to their blank and the blank of their cylinders

A

Operation and physical arrangement

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8
Q

Reciprocating compressor’s that have two or more pistons of different size are called blank compressors

A

Multi stage

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9
Q

In a compressed air system suction valve unloaders are actuated by air pressure from the

A

Receiver

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10
Q

Name the four types of positive displacement rotary compressor’s

A

Rotary screw, sliding vein, impeller, liquid ring

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11
Q

Dynamic compressors have blank displacement

A

Nonpositive

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12
Q

The amount of cooling that can take place in a water cooled compressor depends on the blank and blank of the water

A

Temperature and volume

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13
Q

After lubricating oil is added the air should travel no more than about

A

30 feet

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14
Q

The intake filter of an air compressor should be placed where the air is blank and blank

A

Coolest and cleanest

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15
Q

Dust washed out of the air by an oil mist collects in the

A

Lubricant

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16
Q

The air delivered to a pneumatic system should be conditioned by removing water oil and

A

Solid particles

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17
Q

Filter separators can be placed in the supply branch or blank blank lines of a pneumatic system

A

Individual feed

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18
Q

In two cylinder adsorption dryers one cylinder dries the air while the other cylinder is being

A

Reactivated

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19
Q

And airline filter remove oil and water droplets and solid particles from the air through

A

Centrifugal force

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20
Q

Airline lubricators usually add oil to the airstream at the rate of one drop for every blank CFM

A

10

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21
Q

A compressor increases the pressure of the air by

A

Decreasing its volume

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22
Q

Which of the following is used to activate suction unloading valves

A

Receiver air pressure

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23
Q

Which of the following is classified as a dynamic compressor

A

Centrifugal

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24
Q

Which of the following best determines the amount of conditioning required by the compressed air after it leaves the compressor

A

How the air is used

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25
Q

 Blank blank or views are used for showing the physical relationship and interconnections between components

A

Pictorial symbols

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26
Q

Schematic symbols more clearly emphasize the function and blank of blank of components

A

Method of operation

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27
Q

Reading schematics and understanding a circuit can be best accomplished by studying small

A

Segments at a time

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28
Q

Pilot or signal lines are drawn as

A

A series of long dashes

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29
Q

Name the three types of symbols commonly used in pneumatic diagrams

A

Pictorial, cutaway, schematic

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30
Q

The construction of components is emphasized in blank symbols

A

Cutaway

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31
Q

Schematic symbols emphasize the function and blank of a component

A

Operation

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32
Q

Circles are used in schematics to represent blank motion or devices

A

Rotary

33
Q

In a schematic diagram the supply air to the pneumatic system is represented by line and a

A

Hollow triangle

34
Q

If there is no standard schematic symbol to be found on the chart for a type of device the blank then makes a graphic symbol

A

Manufacturer

35
Q

What two types of symbols are combine to form composite graphic symbols

A

Complete and simplified

36
Q

Mainline conductors in a schematic circuit diagram are shown as

A

Single unbroken lines

37
Q

A safety circuit used to limit the operating pressure in a pneumatic system will maintain

A

Both the minimum and maximum pressures

38
Q

According to a ASME codes, receivers must be equipped with blank blank and safety valves

A

Pressure gauges

39
Q

The spacing of pipe supports should be placed close enough together to blank any appreciable blank

A

Prevent and sag

40
Q

It is generally better to select a slightly oversized pipe this provides a certain margin of safety and the system can then accommodate blank blank without significant alterations

A

Additional demands

41
Q

If the flare is not a good one

A

Replace the flare

42
Q

How long of a hose for a pneumatic compressor

A

Hoses should not be any longer than necessary

43
Q

A good planned maintenance program requires?

A

All equipment is checked on a regular basis

44
Q

Excessive pressure results in blank blank, possible over stressing, and premature failure of parts

A

Accelerated wear

45
Q

Air control valves for industrial control circuits are, for the most part, designed and built for use with pressures up to blank psi

A

150

46
Q

When is the best time to perform your daily check

A

Early in the shift

47
Q

Records of control valve and cylinder operating cycles are usually obtained from blank blank

A

Production records

48
Q

The troubleshooting checks themselves are determined by the blank and blank of blank in the system

A

Type and number of components

49
Q

The sequence of troubleshooting steps described in this lesson is based on to operations number one determining if there is

A

Any air pressure in the supply system

50
Q

The system description and operation section provides a concise description of signal, logic, and actuation functions not

A

Troubleshooting

51
Q

When piston seals become worn and leak, air continually

A

Escapes through the exhaust port

52
Q

If the valve action is sluggish check the

A

Moving parts

53
Q

Heat generated during compression is controlled in two ways, by cooling and buy

A

Limiting the pressure of the compressed air

54
Q

If the surrounding air is dusty or oily, more frequent cleaning, possibly with a

A

Detergent or steam is required

55
Q

What is the greatest wear on a discharge valve

A

Carbon deposits

56
Q

Hey motor starting controller on a compressor is checked by starting to compressor after?

A

Letting out all of the air in the compressor reservoir

57
Q

Several maintenance items are the same for all rotary compressors, lubrication, bearings, and seals not

A

Intake valves

58
Q

A control malfunction can best be isolated by analyzing the performance, or lack of performance, of the

A

Components in the pneumatic circuit

59
Q

In some circuits such a loss of power may put the circuit blank of blank or stop it entirely

A

Out of sequence

60
Q

What is used to activate a solenoid on a pneumatic control valve

A

Electric current

61
Q

If a valve is manually shifted and the circuit response is not correct because maybe low blank blank

A

Air pressure

62
Q

Swollen seals in a control valve usually indicate that an improper blank was used in the pneumatic system

A

Lubricant

63
Q

What kind of cylinders are used for most industrial applications

A

Tie rod

64
Q

Applications that involve higher temperatures or other harmful conditions require special seals when they get to be above what degree Fahrenheit

A

200

65
Q

A gland or bushing acts as a blank for the piston rod

A

Bearing

66
Q

Improper tie rod torque can be another source of

A

Internal misalignment

67
Q

The function of an internal cushion is to protect the blank from damage

A

Cylinder

68
Q

Good cylinder performance depends on accurate mounting and blank of the cylinder

A

Alignment

69
Q

Without this, air motors will have a limited service life

A

Clean filtered air

70
Q

When you repair air motors or tools remember that they are

A

Precision built

71
Q

Which of the following is the proper lube to use when installing hose couplings

A

Soapy solution

72
Q

Give special attention to grinders in addition to the basic considerations already discussed inspect the blank or motor blank of a pneumatic grinder

A

The arbor or motor shaft

73
Q

Because of their what, radio piston air motors require less maintenance than other air motors

A

Slower operating speeds

74
Q

Low pressure in the hydraulic end of air oil tank systems to overcome this lower pressure, relatively what, Are required

A

Large work cylinders

75
Q

The main components in an air oil booster are it’s

A

Air piston and hydraulic ram

76
Q

What valve adjusts the make up and return tank oil levels in a single pressure booster system

A

The Manuel shut off valve

77
Q

In a combined single unit air oil cylinder, the fluids are separated by

A

Bleeder space

78
Q

One advantage of interlocked independent air oil systems is their

A

Increasing the speed of the operation

Final (3 decks)

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