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Autobody Technician Year 2 > Exam 3 > Flashcards

Exam 3 Flashcards

1
Q

When blending use __% of book time.

A

50%

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2
Q

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

A

Higher (positive)

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3
Q

______ ______ compressors operate on the principle of positive displacement.

A

Rotary Screw compressors

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4
Q

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

A

Two-stage

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5
Q

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

A

100 linear feet

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6
Q

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

A

Air regulator transformers

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7
Q

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

A

20 psi

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8
Q

An __________, sometimes referred to as a damage appraisal.

A

Estimate

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9
Q

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

A

Piston compressor

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10
Q

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

A

Full loop design

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11
Q

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

1HP= _ CFM

A

1HP=4CFM

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12
Q

The _________ will deal with various waste materials.

A

refinisher

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13
Q

What stage does the majority of atomization start?

A

Stage 2

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14
Q

An estimate is good for __ days

A

30

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15
Q

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

A

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

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16
Q

.1 on an estimate = ?

A

6 mins

10th of an hour

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17
Q

A single-stage compressor is __% efficient

A

60%

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18
Q

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

A

60 degrees C

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19
Q

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

A

10-15 minutes

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20
Q

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

A

Estimate

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21
Q

One bar is equal to __._ psi

A

14.5psi

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22
Q

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

A

Metal Storage

23
Q

What are spray gun bodies made of?

A

Aluminum Alloy

24
Q

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

A

30-50psi

25
Q

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

A

60/40

70/30

26
Q

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

A

Diaphragm

27
Q

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

A

Refrigerated Air Dryers

28
Q

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

A

80 to 90%

29
Q

1 micron is equal to _/____ mm

A

1/1000 mm

30
Q

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

A

7.6 meters

31
Q

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

A

Supplement

32
Q

A two-stage compressor is typically __% efficient.

A

80%

33
Q

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

A

Centrifugal Pressure release valve

34
Q

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

A

2

12.5

35
Q

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

A

10 degress C

36
Q

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

A

Pressure drops

37
Q

An estimate is a complete _________ of a vehicle

A

Blueprint

38
Q

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

A

Manometer or a magnehelic pressure gauge.

39
Q

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

A

One foot

40
Q

Hoses are measured by the _______ ______ and _____.

A

Inside diameter and length

41
Q

When colour sanding use __% of book time.

A

30%

42
Q

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

A

12

43
Q

What RPM range does a circular polisher run at?

A

600 to 3000RPM

44
Q

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

A

The Dead end design

45
Q

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

A

20 to 30 minutes.

46
Q

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

A

Dew Point

47
Q

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

A

10 months

5 days

48
Q

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

A

8 to 10”

49
Q

The wavelength is determined by the _________ of the source

A

temperature

50
Q

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

A

Air distribution systems

51
Q

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

A

Single-stage

52
Q

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

A

2.5 hours

53
Q

Whats the transfer efficiency of a conventional gun?

A

25-30%

Autobody Technician Year 2 (3 decks)

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