TPC 310

Question 1

What results when the air in a compressor is compressed to a smaller volume?

Answer 1

Pressure increases

Question 2

A dynamic air compressor is frequently referred to as a:

Answer 2

Non-positive displacement compressor

Question 3

The size of a compressor air intake filter is determined by the:

Answer 3

Intake requirements

Question 4

Corrosion resistant piping is used in pneumatic systems to:

Answer 4

Extend pipe service life

Question 5

After lubricating oil has been introduced into an air line, what is the recommended maximum distance that the air should travel?

Answer 5

30 ft

Question 6

What kind of drawings should be used to show the interconnections between components?

Answer 6

Pictorial

Question 7

What is generally illustrated in a schematic drawing?

Answer 7

Functions and operations

Question 8

Pilot or signal lines are shown on a schematic drawing as:

Answer 8

A series of long dashes

Question 9

A schematic diagram can best be understood if the drawing is:

Answer 9

Studied in small segments

Question 10

Special schematic symbols are usually devised and drawn by the:

Answer 10

Component manufacturer

Question 11

In accordance with the American Society of Manufacturing Engineer’s code, air receivers must be equipped with safety valves and:

Answer 11

Pressure gauges

Question 12

What is the proper spacing for pipe supports or hangers?

Answer 12

Close enough to prevent sag

Question 13

What should you do if an air leak occurs of a flared fitting?

Answer 13

Replace the flare

Question 14

What is the proper length for hoses used to connect pneumatic components?

Answer 14

Only as long as necessary

Question 15

A good planned maintenance program requires:

Answer 15

Regular equipment checks

Question 16

A pneumatic system operated with excessive air pressure will usually have:

Answer 16

Accelerated wear

Question 17

Most control valves in a pneumatic system are designed for use with pressure up to:

Answer 17

150 psi

Question 18

The best time to perform a daily check on compressor room equipment is:

Answer 18

Early in the shift

Question 19

The operating cycles of control valves and cylinders used on production lines are usually entered in the:

Answer 19

Production record

Question 20

Which of the following determines what troubleshooting checks to make in a pneumatic system?

Answer 20

The type and number of components

Question 21

When you are troubleshooting a pneumatic system, first check the:

Answer 21

Supply air pressure

Question 22

Which of the following would NOT be in the description section of an operations manual?

Answer 22

Troubleshooting procedures

Question 23

Piston seals can be checked for leakage by:

Answer 23

Observing the exhaust port for air

Question 24

Which of the following should you always inspect when troubleshooting a manually operated control valve for sluggish action?

Answer 24

Moving parts

Question 25

Heat generated in the cylinder of a compressor during the compression stroke is best controlled by cooling the compressor and:

Answer 25

Limiting the compression pressure

Question 26

An air compressor operating in a dusty or oily atmosphere should be cleaned at regular intervals with a(n):

Answer 26

Detergent

Question 27

Which of the following causes the greatest discharge valve wear in a compressor?

Answer 27

Carbon deposits

Question 28

A motor starting controller on a compressor is checked for proper operation by starting the compressor after the:

Answer 28

Reservoir pressure has been relieved

Question 29

Which of the following is NOT a maintenance consideration common to all rotary compressors?

Answer 29

Intake valves

Question 30

The best way of locating air control valve problems is to analyze the performance of the:

Answer 30

Circuit components

Question 31

Loss of power in a pneumatic control circuit can cause the circuit to:

Answer 31

Get out of sequence

Question 32

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

Answer 32

An electric current

Question 33

A control valve that will shift manually, but not automatically, is likely to have:

Answer 33

Low air pressure

Question 34

The use of an improper lubricant in a control valve may result in all of the following EXCEPT:

Answer 34

Shifting without a signal

Question 35

What type of pneumatic cylinder is used for most industrial applications?

Answer 35

Tie rod

Question 36

The primary purpose of a piston rod bushing is to:

Answer 36

Act as a bearing

Question 37

Above what temperature do pneumatic cylinders require special seats?

Answer 37

200 degrees f

Question 38

Improperly tightened or torqued tie rods on pneumatic cylinders will cause:

Answer 38

Internal misalignment

Question 39

What is the function of pneumatic cylinder cushions?

Answer 39

Prevent cylinder damage

Question 40

The normal service life of air motors can be improved by:

Answer 40

Clean, filtered air

Question 41

Which of the following is a proper lubricant to use when installing hose couplings?

Answer 41

Soapy solution

Question 42

Air motors require careful handling during disassembly and assembly because they are:

Answer 42

Precision-built

Question 43

Special attention should be given to the _____ of pneumatic grinders.

Answer 43

Arbor shafts

Question 44

Radial piston air motors require less maintenance than the air motors because they have:

Answer 44

Slower operating speeds

Question 45

The low pressure in the hydraulic end of an air-oil tank system is overcome by the use of:

Answer 45

Large work cylinders

Question 46

The main components of air-oil boosters are the:

Answer 46

Air pistons and hydraulic rams

Question 47

What valve adjusts the makeup and return tank oil levels in a single-pressure booster system?

Answer 47

Manual shut-off valve

Question 48

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

Answer 48

A bleeder space

Question 49

One advantage of interlocked independent air-oil system is their:

Answer 49

Increased speed of operation