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Pneumatic Flashcards

(78 cards)

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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
 Blank blank or views are used for showing the physical relationship and interconnections between components
Pictorial symbols
26
Schematic symbols more clearly emphasize the function and blank of blank of components
Method of operation
27
Reading schematics and understanding a circuit can be best accomplished by studying small
Segments at a time
28
Pilot or signal lines are drawn as
A series of long dashes
29
Name the three types of symbols commonly used in pneumatic diagrams
Pictorial, cutaway, schematic
30
The construction of components is emphasized in blank symbols
Cutaway
31
Schematic symbols emphasize the function and blank of a component
Operation
32
Circles are used in schematics to represent blank motion or devices
Rotary
33
In a schematic diagram the supply air to the pneumatic system is represented by line and a
Hollow triangle
34
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
Manufacturer
35
What two types of symbols are combine to form composite graphic symbols
Complete and simplified
36
Mainline conductors in a schematic circuit diagram are shown as
Single unbroken lines
37
A safety circuit used to limit the operating pressure in a pneumatic system will maintain
Both the minimum and maximum pressures
38
According to a ASME codes, receivers must be equipped with blank blank and safety valves
Pressure gauges
39
The spacing of pipe supports should be placed close enough together to blank any appreciable blank
Prevent and sag
40
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
Additional demands
41
If the flare is not a good one
Replace the flare
42
How long of a hose for a pneumatic compressor
Hoses should not be any longer than necessary
43
A good planned maintenance program requires?
All equipment is checked on a regular basis
44
Excessive pressure results in blank blank, possible over stressing, and premature failure of parts
Accelerated wear
45
Air control valves for industrial control circuits are, for the most part, designed and built for use with pressures up to blank psi
150
46
When is the best time to perform your daily check
Early in the shift
47
Records of control valve and cylinder operating cycles are usually obtained from blank blank
Production records
48
The troubleshooting checks themselves are determined by the blank and blank of blank in the system
Type and number of components
49
The sequence of troubleshooting steps described in this lesson is based on to operations number one determining if there is
Any air pressure in the supply system
50
The system description and operation section provides a concise description of signal, logic, and actuation functions not
Troubleshooting
51
When piston seals become worn and leak, air continually
Escapes through the exhaust port
52
If the valve action is sluggish check the
Moving parts
53
Heat generated during compression is controlled in two ways, by cooling and buy
Limiting the pressure of the compressed air
54
If the surrounding air is dusty or oily, more frequent cleaning, possibly with a
Detergent or steam is required
55
What is the greatest wear on a discharge valve
Carbon deposits
56
Hey motor starting controller on a compressor is checked by starting to compressor after?
Letting out all of the air in the compressor reservoir
57
Several maintenance items are the same for all rotary compressors, lubrication, bearings, and seals not
Intake valves
58
A control malfunction can best be isolated by analyzing the performance, or lack of performance, of the
Components in the pneumatic circuit
59
In some circuits such a loss of power may put the circuit blank of blank or stop it entirely
Out of sequence
60
What is used to activate a solenoid on a pneumatic control valve
Electric current
61
If a valve is manually shifted and the circuit response is not correct because maybe low blank blank
Air pressure
62
Swollen seals in a control valve usually indicate that an improper blank was used in the pneumatic system
Lubricant
63
What kind of cylinders are used for most industrial applications
Tie rod
64
Applications that involve higher temperatures or other harmful conditions require special seals when they get to be above what degree Fahrenheit
200
65
A gland or bushing acts as a blank for the piston rod
Bearing
66
Improper tie rod torque can be another source of
Internal misalignment
67
The function of an internal cushion is to protect the blank from damage
Cylinder
68
Good cylinder performance depends on accurate mounting and blank of the cylinder
Alignment
69
Without this, air motors will have a limited service life
Clean filtered air
70
When you repair air motors or tools remember that they are
Precision built
71
Which of the following is the proper lube to use when installing hose couplings
Soapy solution
72
Give special attention to grinders in addition to the basic considerations already discussed inspect the blank or motor blank of a pneumatic grinder
The arbor or motor shaft
73
Because of their what, radio piston air motors require less maintenance than other air motors
Slower operating speeds
74
Low pressure in the hydraulic end of air oil tank systems to overcome this lower pressure, relatively what, Are required
Large work cylinders
75
The main components in an air oil booster are it’s
Air piston and hydraulic ram
76
What valve adjusts the make up and return tank oil levels in a single pressure booster system
The Manuel shut off valve
77
In a combined single unit air oil cylinder, the fluids are separated by
Bleeder space
78
One advantage of interlocked independent air oil systems is their
Increasing the speed of the operation

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