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Skill Assessments
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PCB Design Skill Assessment
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Quiz # 1
PCB Design Quiz # 1
Instructions
Quiz:
PCB Design Quiz # 1
Subject:
Basic Pcb Design Test
Total Questions:
30 MCQs
Time:
30 Minutes
Note
Do not refresh the page while taking the test.
Results along with correct answers will be shown at the end of the test.
Start Quiz
PCB Design Quiz # 1
End Quiz
Question
1
of 30
00:00
Which of the following is not a film used in PCB design?
A copper film
A polyester film
A photographic glass
A tri-acetate film
Which one of the following is not a plating technique?
Immersion plating
Electroless plating
Hard plating
Electroplating
The analog and the digital circuit on the same PCB should have _____.
common ground conductor networks
independent ground conductor networks
no ground conductor network
None of the above
When two transmission lines are placed close to each other, they are said to be coupled. This coupling can be used to built
band pass filters
band elimination filters
directional couplers
All of the above
Etch back is a technique by which ______.
epoxy smear is removed and the exposed glass fibers prepared for copper deposition
epoxy smear is deposited and the exposed glass fibers prepared for copper removal
etchants are removed again
None of the above
Parasitic effects influence the working of a PCB.
true
false
sometimes true and sometimes false
In the layout approach, a 'Puppet' is used for_____.
a diode
a transistor
an IC
any commonly used electronic component
For TTL , we require a wave impedance of_____.
50-100ohm
100-150ohm
150-200ohm
200-250ohm
Large values of wave impedance call for _____.
broader signal conductors
thin signal conductors
both a and b
Screen printing is used in _____.
photo printing
screen printing
hand printing
All of the above
Which of the following is not a machine cleaning process for boards?
Sanding
Water rinse
Wet brushing
Scrubbing
Which of the following is a design constraint for the design of the flexible PCBs?
Current carrying capacity of the conductors
Bending
Contours
All of the above
Self soldering or soldering generally implies that the joining process occurs at temperatures below
100°c
200°c
350°c
450°c
What is hot air leveling used for?
Etching
PCB finishing
PCB layout
PCB artwork
A conductor in a printed circuit should be considered a transmission line if its length l (in meters) is
l > Tr/100 nsec ( Tr- rise time of pulse)
l > 2Tr/100 nsec
l > Tr/200 nsec
l > 2Tr/50 nsec
Which of the following is not a physical characteristic of a copper clad laminate?
Flame resistance
Water absorption
Flexural strength
Color
In fast signal or high – speed logic circuits , the conductors are considered to be _____.
impedances
transmission lines
capacitors
inductors
Copper plating is done in multilayer boards to _____.
remove etchants
remove excess copper
withstand thermal shock due to soldering
clean a PCB with chemicals
The dielectric constant of any material is also referred to as _____.
permeability
permittivity
proximity
resistivity
Which of the following techniques is used in mass soldering?
Dip soldering
Drag soldering
Wave soldering
All of the above
Which of the following is a technique for the generation of the circuit pattern on metal core boards?
Substance additive processing
Additive processing with catalytic adhesive
Semi-additive processing
Both a and b
By which material is the typical resin/filler laminate of ordinary PCBs replaced in metal core boards?
Sheet metal covered with insulation material
Cardboard
Foil with insulation
None of the above
Which of the following is not a solder alloy?
Tin lead
Tin antimony
Tin silver
Iron lead
Which of the following is a category of dry film resists?
Solvent developing dry film resists
Liquid developing dry film resists
Hand developing dry film resists
All of the above
For the etching process, the temperature should preferably be around
30°C
10°C
45°C
100°C
The volume resistivity of a laminate is given by
R*A / l R- resistance measured
R*l / A A-area of gourde electrode (cm2)
A*l / R l-thickness of sample(cm)
R / A*l
A standard hole(0.8mm) in a PCB design is represented by which symbol.
О
€
Ө
β
The biggest problem associated with striplines and microstrip lines is the
low attenuation per unit length
high attenuation per unit length
low impedance per unit length
high impedance per unit length
Ferric chloride is used in PCB designing as a/an _____.
resist
etchant
board cleaner
a soldering material
In which of the following ways can the required quantity of heat for the melting of the solder be supplied?
Iron soldering
Hot gas soldering
Radiant heat soldering
All of the above
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