Title: 3.8 Common Soldering Problems Quiz
Course: Electronics Assembly & Soldering (Sandbox) > Section: Module 3: Through-Hole Solder and Desolder Instructions

Q: Pick the sentence that best matches the phrase:

"A disturbed joint."
- Surface of the joint may appear frosted, crystalline or rough.
- One that has been subjected to movement as the solder was solidifying.
- Can be repaired by reheating and allowing it to cool undisturbed.
- All of the above
A: All of the above

Q: Cold joints are bad, because...
- they are often lumpy.
- they are not pretty.
- they are ultimately unreliable.
- they will give you frostbite.
A: they are ultimately unreliable.

Q: When the solder doesn't stick to the leads or the pads, what mistake has occurred?
- Solder bridge
- Insufficient wetting
- Overheated joint
- Disturbed joint
A: Insufficient wetting

Q: A solder starved joint...
- is not a strong joint and may develop stress cracks and fail over time.
- is hard to detect.
- is caused by a soldering iron that is too cool.
- is almost impossible to repair.
A: is not a strong joint and may develop stress cracks and fail over time.

Q: A joint with too much solder...
- is too costly.
- Ugh! Kill me now, because it's so ugly!
- is actually good because you can be sure that you have conductivity.
- might be a perfectly good joint, but we can't tell for sure.
A: might be a perfectly good joint, but we can't tell for sure.

Q: Untrimmed leads...
- are fine if you in a hurry.
- are potential short circuits.
- are potential open circuits.
- are potential grounds.
A: are potential short circuits.

Q: Lifted pads are caused by...
- using too much solder.
- overworking the joint.
- using too much flux.
- swearing while you solder.
A: overworking the joint.

Q: Lifted pads can be repaired by...
- folding the lead over to a still-attached copper trace and soldering it.
- using a jumper wire to connect the leg of the component in the hole of the now dead pad with the leg of the component it should be connected to.
- black magic.
- Both a and b will work
A: Both a and b will work

Q: Stray solder spatters can be removed with _____.
- acid
- alcohol
- tweezers
- blasting caps
A: tweezers