stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
PO13 Colour Matching Flashcards | StudBud
Explore
/
PO13 Colour Matching
PO13 Colour Matching
60 terms
·
StudBud Administration
·
93 plays
Imported from external platform
Flashcards
60 cards
F
Practice quiz
P
Host live
L
Questions
60
Answers
1
The correct spray pattern for application of paint through an HVLP gun is shown in the illustration at:
A
B
C
D
2
If the colour swatches indicate there is a yellow shade, this refers to:
There is a variant of the colour related to the Chroma
There is a variant of the colour related to the darkness
There is a variant of the colour related to the Hue
There is a variant of the colour related to the Value
3
Colours which have poor opacity will require:
Additional coats of clear coating
Additional coats of base coat
The use of a ground coat or tinted primer
Additional coats of primer
4
How does Munsell define Chroma in his classification of colours?
The quality that distinguishes a pure hue from a grey shade
The property by which a light colour is distinguished from a dark one
The property that places a colour between infra-red and ultra -violet
The property by which one colour is distinguished from another
5
The value of the face tone will be lighter if:
The solvent used in the basecoat is slow in evaporating
The basecoat is applied in lighter coats
The air pressure is reduced and basecoat is applied wet
A larger fluid tip is used during application
6
Primer surfacer is used when:
The surface has had repairs and the application of stoppers
The surface is in good condition but requires depth and build
The surface has been feather edged in places and requires levelling
The surface has had major repairs using body filler
7
One likely result of using the incorrect gun set-up for spraying paint is:
The paint would not emerge from the gun at all
A very even and smooth effect on the paint finish
Dry or orange peel effect on the resulting paint finish
The gun trigger would not function effectively
8
The image shows:
Diffuse Reflection
Angle of Refraction
Specular Reflection
Angle of incident
9
A lighter variant in the colour swatches refers to:
The Hue of the colour
The value of the colour
The Chroma of the colour.
The shade of the colour.
10
Substituting a green based tinter with a blue and yellow tinter when mixing could cause:
Affect the Hue
Affect the Chroma
Cause Metamerism
Affect the Value
11
Which of the following lists binders used in paint mixtures?
Polyesters, urethanes and acrylics
Hardener, thinner and accelerators
Pigment, acrylic and hardener
Solid, metallic and pearl
12
Anti-corrosion Pigments helping prevent oxide layers forming on a surface include:
Yellow Ochre
Red Oxide
Zinc and Chromate
Metallic flakes
13
What is the complementary colour for adjusting Red:
Green
Yellow/Green
Blue
Blue/Violet
14
The value of the face tone will be darker if:
The solvent used in the basecoat is fast in evaporating
The air pressure is increased and basecoat is applied dry
The basecoat is applied in lighter coats
A larger fluid tip is used during application
15
The defect pictured indicates that the paint film is:
A solid colour
A 1K paint finish
A 2K paint finish
A clear over base finish
16
Initial primers applied to bare plastic are used:
As a prevention against fish eyes
As an adhesion promoter
To seal contaminants on the surface
To provide build for subsequent paint films
17
What course of action could be taken to ensure that mixed paint is the correct consistency for spraying through a gun?
Thin it down with a compatible hardener to the recommended ratio
Always use a graded mixing stick marked to the correct ratio
Add reducer and let the paint run off a mixing stick to check
Find information on the data sheet and check with a viscosity cup
18
The Prism pictured is showing the visible spectrum. The order of colours are:
Red, Green, Blue, Indigo, Violet, Yellow and Orange.
Red, Blue, Yellow, Orange, Green, Violet and Indigo
Red, Yellow, Blue, Indigo, Violet, Orange and Green.
Red, Orange, Yellow, Green, Blue, Indigo and Violet.
19
What is the complementary colour for adjusting Yellow:
Violet
Red
Blue/Green
Green
20
Daylight must always be used when colour matching because:
Artificial light causes metamerism on the surface so colours look different
Artificial light casts different wavelengths affecting colour reflected
Artificial light is totally absorbed and not reflected off the surface
Artificial light needs to be stronger in order to show the colour properly
21
Chroma is:
The lightness or darkness of a colour
The strength of the colour
The colour itself - Red, Green, Blue, etc
The greyness of the colour (purity)
22
Using the wrong coloured ground coat or incorrectly tinting the primer will cause:
The finished colour will be too light or dark
The finished colour will not match
Poorly applied basecoat
Differences in face or flip tone
23
A two pack (2K) paint is classified as:
A non-convertible - non-reversible film
A convertible - non-reversible film
A convertible - reversible film
A non-convertible - reversible film
24
Which of the following is an advantage of using computerised mixing scales
Increased paint economy and accuracy
The ability to mix more types of paint
The ability to mix more special colours
Decreased paint economy and accuracy
25
When mixing colours, the secondary colours are:
Breen, Orange and Red
Green, Blue and Purple (violet).
Green, Orange and Purple (violet).
Green, Purple (violet) and Yellow
26
How does Munsell define Hue in his classification of colours?
The quality by which a light colour is distinguished from a dark one
The quality by which one colour is distinguished from another
The property that places a colour between infra-red and ultra -violet
The property that distinguishes a pure colour from a grey shade
27
Wet on wet primer is:
A primer were basecoats are applied over them after flash off.
Primers that require less sanding than primer surfacers.
Primers that are applied and don't require curing
Primer that are applied in wetter coats than other primers
28
The image shows:
The Hue, value and Chroma of the colour
The Value of the colour
The Hue and value of the colour
The Chroma of the colour
29
Painting edge to edge (especially with metallic/pearl finishes) is unlikely to achieve a good colour match, therefore:
We need to re-spray one side of the vehicle so we can't see a difference
Apply colour coats to areas repaired and then blend in the clear coat
We can blend the basecoat into the existing finish using blending materials
We need to sand and re-spray the whole vehicle to ensure the colour matches
30
A colour appears slightly darker than the original. How can you obtain a lighter shade without tinting.
Use lower atomising air pressure and increase the application speed
Use higher atomising air pressure and increase the application speed
Use lower atomising air pressure and increase the paint viscosity
Use higher atomising air pressure and increase the paint viscosity
31
The VIN plate on a vehicle help you to:
All of the answers given
The formulas required for mixing the colour.
Locate the name of the colour in the paint manufacturers colour directory.
The number and name of the different variants.
32
The paint films protecting substrates from attack such as chemical, traffic film, sunlight, etc are:
High build primers and primer surfacers
Topcoats and clearcoats
Etch primers
Basecoats
33
In terms of colour matching, opacity refers to
The lightness or darkness of a colour
The colour is defined as full strength
The colour will be easier to fade out
The ability to obliterate a surface (covering Power)
34
An abrasion test is required to:
Check if the existing finish is a clear over base or solid colour
Check if the existing finish is solvent sensitive
Check if the existing finish cannot be polished
Check if the existing finish is a 2K
35
To get an accurate colour match when applying a three stage Mica:
The vehicle has a metallic basecoat applied before the clearcoat
The vehicle has a groundcoat applied before the basecoat
The vehicle has a groundcoat applied before the clear coat
The vehicle must be primed with a 2K primer
36
What is the complementary colour for adjusting Blue:
Orange
Red
Yellow
Green
37
Hue is:
The colour itself - Red, Green, Blue, etc
The greyness of the colour (purity)
The lightness or darkness of a colour
The strength of the colour
38
When mixing colours, the primary colours are:
Red, Blue and Yellow
Red, Yellow and Orange
Red, Blue and Green
Red, Yellow and Green
39
The tinters on a solvent based mixing scheme are stirred twice a day for ten minutes because:
The pigments settle affecting the strength of the colour
The solvents and the binders need to be mixed together
They won't match the existing finish because of the solvent
The pigments must be mixed with the solvents thoroughly
40
What property does a coarse aluminium pigment give to a metallic paint?
It will give the paint film greater depth, which improve the UV protection
It will enhance the apparent differences in the side and angle tones
The base coat will dry to a rough surface, improving clearcoat adhesion
41
Which of these are Tertiary colours:
R/O, Y/B, Y/G, B/G, B/V and R/V
R/O, Y/O, Y/B, B/G, B/V and R/V
R/O, Y/O, Y/G, B/G, B/V and R/V
R/Y, Y/B, Y/G, B/G, B/V and R/V
42
What are cavity waxes, sealers, e-coatings and anti-stone chip primers:
Products which are classed as heavy build
Products which are classed as being anti-corrosive
Products which are classed as 1 pack film formers
Products which are classed as 2 pack paint films
43
A single pack (1K) paint is classified as:
A convertible - reversible film
A non-convertible - non-reversible film
A convertible - non-reversible film
A non-convertible - reversible film
44
A complementary colour is:
A colour that is opposite on the colour wheel
A colour that reflects light easily
A colour that doesn't reflect light easily
A colour that is adjacent on the colour wheel
45
The defect pictured could have been prevented by carrying out:
An abrasion test
A viscosity test
A solvent test
A paint film thickness test
46
A light box is used to:
Checks colours under different light sources
Checks the Hue, Value and Chroma of a colour
prevent the cause of metamerism
Check that the colour matches the vehicle
47
When is it appropriate to angle the spray gun away at the end of a stroke of triggering off
If there is a problem with the gloss level of a water-borne basecoat
If painting multiple panels one at a time such as a vehicle side
When carrying out a blend with base coat for colour matching purposes
When painting panels with curves or bends
48
The image shows:
Angle of incident
Specular Reflection
Angle of Refraction
Diffuse Reflection
49
The defect indicates that the existing finish:
Is solvent sensitive
Is a clear over base finish
Reacts to Ultra Violet Rays
Reacts to temperature
50
A white surface under a Tungsten Filament light will appear:
Light Yellow
Slightly Yellow
Greenish Yellow
Bluish Yellow
51
Which of these factors affect the flip and the face tone:
Viscosity, Equipment adjustments, spray techniques, type of solvent.
Temperature, spray gun set up, spray techniques, type of solvent.
Temperature, Equipment adjustments, spray techniques, type of solvent.
Type of basecoat, equipment adjustments, spray techniques, type of solvent.
52
A high level of gloss indicates a:
Decorative reflection
Refracive reflection
Diffuse reflection
Specular reflection
53
Metamerism is:
The result of incorrect viscosity when mixing colours
the tinters not being stirred frequently
the result of different colour pigmentation
the paint reacting to different light sources
54
Colours are percieved by:
Retraction and refraction
All of the answers provided
Reflection and Refraction
Reflection and Retraction
55
Which of the following items could be used to test a colour to see if it is metameric
Light box
Spray booth lights
Hand held torch
Spectrophotometer
56
The first coat of primer applied to a surface primarily provides:
Moisture resistance
Maximum adhesion
Anti-corrosion properties
Maximum coverage
57
Value is:
The colour itself - Red, Green, Blue, etc
The lightness or darkness of a colour
The strength of the colour
The greyness of the colour (purity)
58
A solvent test is required to:
Check if the existing finish is a clear over base
Check if the existing finish is a solid colour
Check if the existing finish is a 2K
Check if the existing finish is solvent sensitive
59
Colour is the amount of wavelengths that are either reflected or absorbed:
False
True
60
When colour matching we clean and polish the vehicle in order to:
remove contaminants to ensure colour being applied has a high gloss level.
Ensure surface is smooth and even and colour matches the surface.
Remove contaminants and restore the gloss to ensure colours match.
ensure paint adheres to the surface by removing all contaminants.
