Smt Application Quiz
20 questions on the SMT machine, applications, features and benefits.
Please note most questions will have more than one answer, but not all of them!
- 1.
Where should the SMT machine be positioned in a production line?
- A.
After the board loader
- B.
After laser marking
- C.
Before the screenprinter
- D.
After screenprinting
Correct Answer(s)
A. After the board loader
B. After laser marking
C. Before the screenprinterExplanation
The SMT should be installed after anything which might cause contamination and before the next critical process, for example screenprint or adhesive placementRate this question:
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- 2.
Why is the SMT machine required even in a Cleanroom?
- A.
It is not necessary because PCB's are supplied wrapped in plastic
- B.
PCB's release epoxy dust from routed edges
- C.
Risk of contamination from operators
- D.
Suppliers will clean boards
Correct Answer(s)
B. PCB's release epoxy dust from routed edges
C. Risk of contamination from operatorsExplanation
Even wrapped in plastic, boards will still have contamination on the surface making it necessary to clean them. Generally suppliers do not package boards in a cleanroom environment.Rate this question:
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- 3.
How does the SMT help the Six Sigma process?
- A.
Provides yield data
- B.
Helps reduce random and variable defects
- C.
Increases cycle time
- D.
Helps reduce re-work
Correct Answer(s)
B. Helps reduce random and variable defects
D. Helps reduce re-workExplanation
The SMT will help to improve the yield but does not provide or analyse data. The customer's SPC (statistical process control) will do this.Rate this question:
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- 4.
Why is contact cleaning the best and most effective method?
- A.
It cuts through the boundary layer
- B.
It doesn't blow contamination around
- C.
It doesn't scratch the board surface
- D.
It removes particles down to sub micron in size
Correct Answer(s)
A. It cuts through the boundary layer
B. It doesn't blow contamination around
C. It doesn't scratch the board surface
D. It removes particles down to sub micron in sizeExplanation
Contact cleaning is the best and most effective method because it has several advantages. Firstly, it cuts through the boundary layer, which refers to the layer of air and contaminants that can accumulate on the surface. By cutting through this layer, contact cleaning ensures that the surface is thoroughly cleaned. Secondly, it doesn't blow contamination around like air or gas methods can do. This means that the contaminants are effectively removed from the surface instead of being spread elsewhere. Thirdly, contact cleaning doesn't scratch the board surface, ensuring that the surface remains undamaged. Lastly, it is capable of removing particles down to sub micron in size, ensuring a high level of cleanliness.Rate this question:
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- 5.
Which length of machine can be supplied with the optional cartridge integrated into the machine stand?
- A.
300
- B.
400
- C.
600
- D.
All sizes
Correct Answer(s)
A. 300
B. 400Explanation
This option is not available in the 600 unit due to a different slide design which is not removeableRate this question:
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- 6.
What length of SMT machine does not have a fully removeable cartridge?
- A.
300
- B.
400
- C.
600
- D.
All sizes
Correct Answer
C. 600Explanation
The 600 machine slide is not removeableRate this question:
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- 7.
Which side of the board is cleaned in a single sided machine?
- A.
Top
- B.
Bottom
- C.
Both
- D.
None
Correct Answer
A. TopExplanation
In a single-sided machine, only the top side of the board is cleaned. This means that the machine is designed to clean and remove dirt, dust, or debris from the surface that is facing upwards. The bottom side of the board is not cleaned in this process.Rate this question:
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- 8.
Which side of the adjustable conveyor can be the fixed Datum?
- A.
Front
- B.
Middle
- C.
Rear
- D.
Not necessary
Correct Answer(s)
A. Front
C. RearExplanation
Customers can select either front or rearRate this question:
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- 9.
Where is the anti-static bar fitted on the SMT machine?
- A.
Top entry
- B.
Bottom entry
- C.
Top exit
- D.
Bottom exit
- E.
There is no static bar
Correct Answer
C. Top exitExplanation
The anti-static bar is fitted on the top exit of the SMT machine. This placement allows the bar to effectively neutralize any static charges that may have built up on the components or circuit boards during the manufacturing process. By placing it at the top exit, the anti-static bar ensures that any static electricity is discharged before the components leave the machine, reducing the risk of damage or malfunction caused by electrostatic discharge.Rate this question:
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- 10.
What are the benefits of the SMT machine?
- A.
Improves yield
- B.
Ensures a clean surface for printing
- C.
SMEMA
- D.
Reduces random and variable defects
Correct Answer(s)
A. Improves yield
B. Ensures a clean surface for printing
D. Reduces random and variable defectsExplanation
SMEMA is a featureRate this question:
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- 11.
Which feature(s) are optional?
- A.
Muti-lingual, touch screen control panel
- B.
Alarm beacon counter
- C.
Static monitoring sensor
- D.
Side access to adhesive and rubber roller
- E.
SMEMA
Correct Answer
C. Static monitoring sensorExplanation
SMEMA cables are the option, not the SMEMA softwareRate this question:
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- 12.
What tools are required to refresh and change the Pre-sheeted Adhesive Roll?
- A.
None
- B.
Allen keys
- C.
Sharp knife
- D.
Screw driver
- E.
Power drill
Correct Answer
A. NoneExplanation
No tools are required to refresh and change the Pre-sheeted Adhesive Roll. This means that the process can be done without the use of any specific tools or equipment.Rate this question:
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- 13.
Where can the DCR handroller be used in an SMT company?
- A.
To manually clean boards before screenprint if there is no automatic board loader, or the printer is semi-automatic (manually loaded)
- B.
To clean stencils
- C.
To clean work surfaces or repair stations
- D.
None of the above
- E.
DCR's can't be used for SMT applications
Correct Answer(s)
A. To manually clean boards before screenprint if there is no automatic board loader, or the printer is semi-automatic (manually loaded)
B. To clean stencils
C. To clean work surfaces or repair stationsExplanation
The DCR handroller can be used in an SMT company for multiple purposes. It can be used to manually clean boards before screenprint if there is no automatic board loader or if the printer is semi-automatic and requires manual loading. It can also be used to clean stencils, as well as work surfaces or repair stations. Therefore, the correct answer includes all these options as valid uses for the DCR handroller in an SMT company.Rate this question:
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- 14.
What are the benefits of being able to see the contamination collected on the Adhesive Roll?
- A.
Provides instant feedback to the operator that machine is working
- B.
Allows analysis of root cause of contamination
- C.
Makes PCB supplier look good
- D.
Lets operator know when paper is due for changing
Correct Answer(s)
A. Provides instant feedback to the operator that machine is working
B. Allows analysis of root cause of contamination
D. Lets operator know when paper is due for changingExplanation
Being able to see the contamination collected on the Adhesive Roll provides instant feedback to the operator that the machine is working. This allows the operator to have confidence that the machine is functioning properly and effectively removing contamination. Additionally, it allows for the analysis of the root cause of contamination, helping to identify and address any issues or sources of contamination. Lastly, it lets the operator know when the paper is due for changing, ensuring that the machine continues to operate efficiently and effectively.Rate this question:
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- 15.
Where in the SMT line would you normally install the optional static monitoring sensors?
- A.
Before SMT machine
- B.
After SMT machine before screenprinter
- C.
After screenprint
- D.
Start of the line
Correct Answer(s)
B. After SMT machine before screenprinter
C. After screenprintExplanation
Some customers like to fit the static monitor "after" the screenprinter to monitor and measure static levels after the print process.Rate this question:
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- 16.
What modes of cleaning operation can the SMT machine offer?
- A.
Double sided, by-pass and single sided (all sizes)
- B.
Double sided and by-pass
- C.
Single sided and by-pass
- D.
Double sided and single sided without extra cartridge
Correct Answer(s)
B. Double sided and by-pass
C. Single sided and by-passExplanation
The interchangeable optional cartridge is not available in 600mm machine, as the slides are not removeable.
Double and single sided cleaning can only be achieved if the extra cartridge is included.Rate this question:
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- 17.
Why is the door for the optional brush cartridge a different colour?
- A.
Because the designer liked the colour
- B.
Because it shows at a distance whether the machine is operating in double or single sided mode.
- C.
To make it easy for the machine operator to know there are different cartridges in the machine
- D.
To match the rest of the machine
Correct Answer(s)
B. Because it shows at a distance whether the machine is operating in double or single sided mode.
C. To make it easy for the machine operator to know there are different cartridges in the machineExplanation
The door for the optional brush cartridge is a different color to show at a distance whether the machine is operating in double or single sided mode. Additionally, it is designed this way to make it easy for the machine operator to know that there are different cartridges in the machine.Rate this question:
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- 18.
Can boards with components fitted be cleaned in a double sided SMT machine?
- A.
Yes, but only in the 300 or 400 version with an optional brush support cartridge
- B.
Yes, in all machines
- C.
Only in the 600 version with an optional brush support cartridge
Correct Answer
A. Yes, but only in the 300 or 400 version with an optional brush support cartridgeExplanation
600 unit can ONLY be ordered as a double or single sided machine. It cannot be supplied with the interchangeable cartridge as the slides are not removeable.Rate this question:
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- 19.
What does this photograph suggest?
- A.
There is nothing wrong with this
- B.
The joint integrity of the pad is compromised as there is a reduction in solder paste
- C.
This could cause a short circuit
- D.
This will cause tomb stoning
- E.
The long term reliability of this joint may be compromised
Correct Answer(s)
B. The joint integrity of the pad is compromised as there is a reduction in solder paste
C. This could cause a short circuit
E. The long term reliability of this joint may be compromisedExplanation
The photograph suggests that the joint integrity of the pad is compromised due to a reduction in solder paste. This reduction in solder paste could potentially cause a short circuit. Additionally, the long term reliability of this joint may be compromised.Rate this question:
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- 20.
What is the maximum speed of the SMT machine?
- A.
Maximum speed is 20 m/min
- B.
Maximum speed is 30 m/min
- C.
Maximum speed is 40 m/min
Correct Answer
C. Maximum speed is 40 m/minExplanation
The maximum speed of the SMT machine is 40 m/min.Rate this question:
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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
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Current Version
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Mar 21, 2023Quiz Edited by
ProProfs Editorial Team -
Jan 15, 2010Quiz Created by
Teknek_quiz_scho
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