EE569 IPC TEST QUESTIONS UPDATED QUESTIONS AND
ANSWERS
The two functions of a solder connection are - CORRECT ANSWER✅✅✅Mechanical and electrical
connection
An imperfect solder joint may result in - CORRECT ANSWER✅✅✅Electrical failure
Keeping your workstation clean means you can - CORRECT ANSWER✅✅✅Avoid contamination of
the assembly
ESD damage can be controlled by - CORRECT ANSWER✅✅✅Proper grounding
The primary reason not to eat or drink at your workstation is to avoid - CORRECT
ANSWER✅✅✅Ingesting lead
A pointed soldering iron tip should be used - CORRECT ANSWER✅✅✅For small connections
When a solder joint is heated for more than 3 seconds - CORRECT ANSWER✅✅✅There may be heat
damage to the base material and plated barrel
The main advantages of 63/37 eutectic solder are - CORRECT ANSWER✅✅✅It melts at lower
temperature and solidifies faster
It's important to remove certain types of fluxes after hand soldering because - CORRECT
ANSWER✅✅✅Sticky residues can hold electrically conductive contaminants and cause metal
corrosion
Solder wetting is defined as - CORRECT ANSWER✅✅✅A smooth, unbroken film of solder, feathered
onto base metals
, The reason it is important to use the correct solder wire diameter is - CORRECT ANSWER✅✅✅For
control of speed and amount of solder
The reason for tinning the soldering iron tip is to - CORRECT ANSWER✅✅✅Transfer heat rapidly
When the soldering iron contacts the cleaning sponge for too long - CORRECT ANSWER✅✅✅The tip
may cool down too much and may affect the formation of a proper solder joint
Using excessive pressure when soldering can cause - CORRECT ANSWER✅✅✅All of the above
We solder on the termination side of the board - away from the components - CORRECT
ANSWER✅✅✅To prevent heat damage to the components
Preheating - CORRECT ANSWER✅✅✅Speeds up the soldering process to help prevent heat damage
to the assembly
It's important to remove the flux residue right after the soldering operation because - CORRECT
ANSWER✅✅✅It can harden and become difficult to remove
If you think components may be sensitive to cleaning fluids, you should - CORRECT
ANSWER✅✅✅Ask about your company specific policy if you have any questions
An ideal solder joint has - CORRECT ANSWER✅✅✅A concave fillet, complete solder coverage,
smooth texture, wetting that feathers smoothly onto metals, and the outline of the lead visible
Class 3 requirements in the J-Standard 001 are for - CORRECT ANSWER✅✅✅High reliability
electronics - where failure is not an option
A cold solder joint - CORRECT ANSWER✅✅✅Looks dull and grainy, and is poorly wetted
ANSWERS
The two functions of a solder connection are - CORRECT ANSWER✅✅✅Mechanical and electrical
connection
An imperfect solder joint may result in - CORRECT ANSWER✅✅✅Electrical failure
Keeping your workstation clean means you can - CORRECT ANSWER✅✅✅Avoid contamination of
the assembly
ESD damage can be controlled by - CORRECT ANSWER✅✅✅Proper grounding
The primary reason not to eat or drink at your workstation is to avoid - CORRECT
ANSWER✅✅✅Ingesting lead
A pointed soldering iron tip should be used - CORRECT ANSWER✅✅✅For small connections
When a solder joint is heated for more than 3 seconds - CORRECT ANSWER✅✅✅There may be heat
damage to the base material and plated barrel
The main advantages of 63/37 eutectic solder are - CORRECT ANSWER✅✅✅It melts at lower
temperature and solidifies faster
It's important to remove certain types of fluxes after hand soldering because - CORRECT
ANSWER✅✅✅Sticky residues can hold electrically conductive contaminants and cause metal
corrosion
Solder wetting is defined as - CORRECT ANSWER✅✅✅A smooth, unbroken film of solder, feathered
onto base metals
, The reason it is important to use the correct solder wire diameter is - CORRECT ANSWER✅✅✅For
control of speed and amount of solder
The reason for tinning the soldering iron tip is to - CORRECT ANSWER✅✅✅Transfer heat rapidly
When the soldering iron contacts the cleaning sponge for too long - CORRECT ANSWER✅✅✅The tip
may cool down too much and may affect the formation of a proper solder joint
Using excessive pressure when soldering can cause - CORRECT ANSWER✅✅✅All of the above
We solder on the termination side of the board - away from the components - CORRECT
ANSWER✅✅✅To prevent heat damage to the components
Preheating - CORRECT ANSWER✅✅✅Speeds up the soldering process to help prevent heat damage
to the assembly
It's important to remove the flux residue right after the soldering operation because - CORRECT
ANSWER✅✅✅It can harden and become difficult to remove
If you think components may be sensitive to cleaning fluids, you should - CORRECT
ANSWER✅✅✅Ask about your company specific policy if you have any questions
An ideal solder joint has - CORRECT ANSWER✅✅✅A concave fillet, complete solder coverage,
smooth texture, wetting that feathers smoothly onto metals, and the outline of the lead visible
Class 3 requirements in the J-Standard 001 are for - CORRECT ANSWER✅✅✅High reliability
electronics - where failure is not an option
A cold solder joint - CORRECT ANSWER✅✅✅Looks dull and grainy, and is poorly wetted
