Deck 7: Compressed Air System Technology

Question 1

Piston compressor pumps are available in single or multiple cylinder and single- or two-stage models.

Answer 1

True

Question 2

A(n) ____ is a hand valve that isolates the tank pressure from shop line pressure.

A) air tank shutoff valve
B) automatic unloader
C) compressor drain valve
D) pressure switch

Answer 2

A

Question 3

Two-stage compressor units normally are used in pressure ranges up to 125 psi (861 kPa) for intermittent service.

Answer 3

False

Question 4

____ are provided for filling and changing air pump oil.

A) Regulators
B) Adapters
C) Aftercoolers
D) Compressor oil plugs

Question 5

Compressors indicate regulated air pressure and, in some cases, main line pressure as well.

Question 6

Pounds per square inch (psi) is the measure of air pressure or force delivered by the compressor to the air tool.

Question 7

A(n) ____, mounted on the motor shaft, acts on the diaphragm plate to pull the diaphragm up and down.

A) intake air filter
B) adapter
C) gauge
D) eccentric

Question 8

The intake air filter located on the compressor inlet is very important because all the air going into the compressor passes through this filter.

Question 9

If the cfm of a compressor is too low for demand, the pump will not be able to keep up.

Question 10

____ is the theoretical amount of air in cubic feet that the compressor can pump in one minute.

A) Pressure release
B) Horsepower
C) Displacement
D) Coupling

Question 11

An adapter is usually made up of an electric motor, air pump, and large air storage tank.

Question 12

An automatic dump trap, installed at the lowest point below the air receiver, collects condensed moisture.

Question 13

Which of the following is LEAST-Likely to be considered a type of air compressor?

A) The filter type
B) The rotary screw type
C) The piston type
D) The diaphragm type

Question 14

The ____ is designed to raise the pressure of air from normal atmospheric to some higher pressure.

A) adapter
B) air compressor
C) air transformer
D) aftercooler

Question 15

The ____ is a heavy-gauge steel tank for holding an extra supply of compressed air.

A) fluid hose
B) air transformer
C) aftercooler
D) compressor air tank

Question 16

A compressor air valve on the bottom of the tank allows for water to be drained off.

Question 17

Two-stage compressors are usually more efficient, run cooler, and deliver more air for the power consumed, particularly in the 100 to 200 psi (689 to 1,378 kPa) pressure range.

Question 18

All of the following are components of a typical two-stage compressor EXCEPT:

A) the drive motor
B) the tank pressure gauge
C) the filter
D) the drain valve

Question 19

____ is the volume of the air being delivered by the compressor to the air tool.

A) Cubic feet per minute
B) Cubic mile per minute
C) Cubic mile per second
D) Pounds per square inch

Question 20

In a compressor, ____ is the capacity of the motor or engine that drives the compressor.

A) air distribution
B) horsepower
C) centrifugal pressure
D) displacement

Question 21

What is the purpose of an air pressure regulator?

Question 22

A(n) ____ is used to couple two pieces of hose or pipe together or to convert a female connection of one size thread to a male connection of another size thread.

A) adapter
B) aftercooler
C) coupling
D) pipe plug

Question 23

When maintaining an air supply system, what precautions should you take before changing to a detergent type oil?

Question 24

What is the difference between an automatic unloader and a pressure switch?

Question 25

All of the following are components of an air filter EXCEPT:

A) the baffle
B) the diaphragm
C) the flexible tubing
D) the quiet zone

Question 26

A ____ is a type of connection that is male on both ends.

A) regulator
B) belt guard
C) coupling
D) drain valve

Question 27

In a(n) ______________________________ air is first compressed to an intermediate pressure and then further compressed to a higher pressure.

Question 28

When air is drawn from the atmosphere and compressed in a single stroke, the compressor is referred to as a(n) ______________________________.

Question 29

The ______________________________ pump develops compressed air pressure through the action of a reciprocating piston.

Question 30

Which of the following is LEAST-Likely a characteristic of an air transformer?

A) Injects oil into the compressed air.
B) May provide multiple air outlets for spray guns, blow guns, air-operated tools, and so on.
C) Filters and regulates the air.
D) Removes oil, dirt, and water from the compressed air.

Question 31

The ______________________________ is designed to provide an adequate supply of clean, dry air at a predetermined pressure to ensure efficient operation of all pneumatic equipment in the body shop.

Question 32

The part that is MOST-Likely used to convert the connections on the hose and other equipment from one thread size to another is:

A) the inlet valve
B) the coupling
C) the eccentric
D) the adapter

Question 33

What are the steps involved in installing a compression ring connection?

Question 34

What are the typical components of a stationary compressor?

Question 35

The ____________________ compressor uses a flexible synthetic rubber membrane to produce a pumping action.

Question 36

A(n) ____ is a type of connection that is male on one end and female on the other.

A) filter
B) inlet valve
C) adapter
D) air compressor

Question 37

While having a discussion about compressor crankcase oil, Technician A says that under clean operating conditions, the oil should be changed at the end of 200 running hours or every three months, whichever occurs first.Technician B says that the oil should be changed at the end of 900 running hours or every eight months, whichever occurs first.Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 38

A(n) ____ is used to reduce the temperature of compressed air.

A) transformer
B) adapter
C) gauge
D) aftercooler

Question 39

Which of the following air system maintenance procedures should MOST-Likely be part of your daily routine?

A) Drain the air receiver and the moisture separator/regulator or air transformer.
B) Clean the air filters.
C) Pull the ring on the safety valve and unseat it.
D) Clean or blow off fins on cylinders, heads, intercoolers, aftercoolers, and any other parts of the compressor or outfit that collect dust or dirt.

Question 40

While having a discussion, Technician A says that an air hose should always be used for solvent-based paints.Technician B says that solvents can corrode the hose material and cause hole failure and rupture as well as paint problems.Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B