Preview Questions PCB Assembly Technician | Role Specific Skill

Question 1: Which solder alloy is commonly used in lead-free soldering?

Which action should you take?

Choose only one option

Sn63Pb37

Sn99.3Cu0.7

Sn96.5Ag3.0Cu0.5

Sn60Pb40

Question 2: What test is recommended for verifying PCB thermal hotspots?

Which action should you take?

Choose only one option

Capacitance testing

Spectrum analysis

Thermal imaging

TDR

Question 3: What is the typical cause of a short circuit detected during visual inspection after a circuit test?

Which action should you take?

Choose only one option

Incorrect test probe placement

Solder bridges between pads

Misplaced components

High input voltage during testing

Question 4: What is the best way to prevent flux residue contamination?

Which action should you take?

Choose only one option

Clean PCB immediately after soldering

Apply minimum solder paste

Use high-purity flux

Use no-clean flux

Question 5: What is the primary factor in determining the soldering iron temperature?

Which action should you take?

Choose only one option

Solder alloy

Flux type

Component size

All of the above

Question 6: Which conveyor speed is optimal for a high-mix, low-volume assembly line?

Which action should you take?

Choose only one option

Fixed

Adjustable

1 m/min

5 m/min