Exam 3

Question 1

When blending use __% of book time.

Answer 1

50%

Question 2

A booth with an air makeup system should have slightly _______ air pressure inside the booth than outside the booth.

Answer 2

Higher (positive)

Question 3

______ ______ compressors operate on the principle of positive displacement.

Answer 3

Rotary Screw compressors

Question 4

A ___-_____ compressor draws air and compresses it to final tank pressure in two stages.

Answer 4

Two-stage

Question 5

A booth must be equipped with an exhaust fan capable of maintaining air movement of ____ linear feet per minute throughout the booth area.

Answer 5

100 linear feet

Question 6

An ___ regulator _________, is a multi-purpose device that first filters and then regulates the compressed air.

Answer 6

Air regulator transformers

Question 7

When blowing a vehicle off before paint use an air pressure of no more than __ psi

Answer 7

20 psi

Question 8

An __________, sometimes referred to as a damage appraisal.

Answer 8

Estimate

Question 9

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

Answer 9

Piston compressor

Question 10

The _____ _____ design is run around the inside walls of the shop.

Answer 10

Full loop design

Question 11

A rule-of thumb when calculating CFM is???

1HP= _ CFM

Answer 11

1HP=4CFM

Question 12

The _________ will deal with various waste materials.

Answer 12

refinisher

Question 13

What stage does the majority of atomization start?

Answer 13

Stage 2

Question 14

An estimate is good for __ days

Answer 14

30

Question 15

A standard automotive spray booth exhausts _____ to ______ cubic feet of air per minute

Answer 15

9000 to 12000 (255 to 340 cubic meters) of air per minute

Question 16

.1 on an estimate = ?

Answer 16

6 mins

10th of an hour

Question 17

A single-stage compressor is __% efficient

Answer 17

60%

Question 18

Ignitable waste has a flash point of less than __ degrees C

Answer 18

60 degrees C

Question 19

Before baking a vehicle, some coatings require __ to __ minutes for solvent to flash off or evaporate.

Answer 19

10-15 minutes

Question 20

By definiton, ________ means to arrive at an often accurate, but usually approximate price for a job.

Answer 20

Estimate

Question 21

One bar is equal to __._ psi

Answer 21

14.5psi

Question 22

Paint solvents, hardeners and paint additives should .be stored in _____ storage cabinets in the paint mixing room.

Answer 22

Metal Storage

Question 23

What are spray gun bodies made of?

Answer 23

Aluminum Alloy

Question 24

Diaphragm compressors deliver only a small amount of air, __psi to __psi

Answer 24

30-50psi

Question 25

Refinishing times include preparation which is typically __/__ or __/__ split with the prepper.

Answer 25

60/40 | 70/30

Question 26

_________ compressors are usually small and portable, and are used where a low volume of air is needed.

Answer 26

Diaphragm

Question 27

_________ ____ Dryers remove moisture, known as water vapor, from compressed air.

Answer 27

Refrigerated Air Dryers

Question 28

Air intake filters must capture __ to __% of all particles 10 microns or larger.

Answer 28

80 to 90%

Question 29

1 micron is equal to _/____ mm

Answer 29

1/1000 mm

Question 30

Transformer regulators should be installed at least _._ meters of air line from the compressor efficient operation,

Answer 30

7.6 meters

Question 31

A _________ is defined as any change to the original estimate.

Answer 31

Supplement

Question 32

A two-stage compressor is typically __% efficient.

Answer 32

80%

Question 33

The _________ ______ release valve allows the motor to start up and gain momentum before engaging the load, or pumping air against it.

Answer 33

Centrifugal Pressure release valve

Question 34

Corrosive waste has a pH of less than _ or greater than __._

Answer 34

2 | 12.5

Question 35

Refrigerated air dryers remove moisture from compressed air by cooling the air in a heat exchanger to approx __degrees C

Answer 35

10 degress C

Question 36

_______ drops are caused by friction of the flowing air against the inner surfaces of air hoses and fittings.

Answer 36

Pressure drops

Question 37

An estimate is a complete _________ of a vehicle

Answer 37

Blueprint

Question 38

Measuring air pressure can be done with a pressure differential gauge called a _________ or a _________ pressure gauge.

Answer 38

Manometer or a magnehelic pressure gauge.

Question 39

A compressor must be located at least ___ foot or more away from any wall or obstruction.

Answer 39

One foot

Question 40

Hoses are measured by the _______ ______ and _____.

Answer 40

Inside diameter and length

Question 41

When colour sanding use __% of book time.

Answer 41

30%

Question 42

A paint mix room ventilation system has __ exchanges of air per hour

Answer 42

12

Question 43

What RPM range does a circular polisher run at?

Answer 43

600 to 3000RPM

Question 44

The ____ end design is run from the compressor to the far end of the shop, usually down the middle of the shop.

Answer 44

The Dead end design

Question 45

The exhaust system should completely change the volume of air in the booth every __ to __ minutes,

Answer 45

20 to 30 minutes.

Question 46

____ point is the temperature at which water vapour condenses from the air.

Answer 46

Dew Point

Question 47

_________ have a shelf life of only __ months if unopened and as few as _ days when opened.

Answer 47

10 months | 5 days

Question 48

How far should a conventional gun be held away from the surface being sprayed?

Answer 48

8 to 10"

Question 49

The wavelength is determined by the _________ of the source

Answer 49

temperature

Question 50

The compressed air piping or ___ ________ systems carries air from the compressor storage tank to various locations in the shop.

Answer 50

Air distribution systems

Question 51

A _____-_____ compressor draws air in and compresses it to final tank pressure in one stage.

Answer 51

Single-stage

Question 52

Allow a maximum of _._ hours to clear coat on exterior panels only.

Answer 52

2.5 hours

Question 53

Whats the transfer efficiency of a conventional gun?

Answer 53

25-30%