Preview Questions Electronics Testing Technician | Role Specific Skill

Question 1: How do you maintain the quality of solder joints when using a hot air rework station?

Which action should you take?

Choose only one option

By using the highest airflow to speed up the process

By ignoring the component placement and heating only the board

By controlling the airflow and temperature to prevent overheating components

By focusing only on the heating element

Question 2: During diode testing on a PCB, which method accurately determines the breakdown voltage without damaging the component?

Which action should you take?

Choose only one option

Use a multimeter's diode test function at maximum voltage

Short the diode and observe

Apply a constant current until breakdown

Use a curve tracer to gradually increase voltage and monitor current

Question 3: How do you calibrate a temperature chamber to ensure accurate testing of temperature-sensitive components?

Which action should you take?

Choose only one option

By manually setting the temperature using the control panel

By using a certified temperature probe and comparing readings to a known standard

By adjusting the chamber's settings based on the manufacturer's recommendations

By measuring the power supply voltage

Question 4: Why is thermal profiling important in PCB testing?

Which action should you take?

Choose only one option

To reduce power consumption

To measure insulation resistance

To ensure soldering process reliability

To validate high-speed signals

Question 5: During automated optical inspection (AOI), a PCB shows no visible defects but fails functional tests. What advanced AOI feature can help detect hidden solder joint issues?

Which action should you take?

Choose only one option

Implement 3D AOI with height mapping and cross-sectional imaging

Use only 2D image processing algorithms

Increase camera resolution

Reduce lighting intensity to highlight defects

Question 6: What is the method to verify the performance of an LED in-circuit?

Which action should you take?

Choose only one option

By visually inspecting the LED for brightness

By testing the LED under reverse bias conditions

By measuring forward voltage and current through the LED

By measuring the resistance across the LED terminals