Preview Questions Electronics Testing Technician | Role Specific Skill

Question 1: When testing a precision voltage reference, which test ensures its temperature coefficient is within specified limits?

Which action should you take?

Choose only one option

Test only at room temperature and assume stability

Measure output at a single temperature

Use a standard multimeter to check voltage

Perform a temperature sweep and plot output voltage vs. temperature to calculate the temperature coefficient

Question 2: When a PCB fails functional testing but passes in-circuit testing, which additional testing method should you employ to identify the issue?

Which action should you take?

Choose only one option

Repeat in-circuit testing multiple times

Replace components randomly based on in-circuit test results

Conduct a functional test with real operating conditions and use an oscilloscope to monitor critical signals during operation

Ignore the functional test failure

Question 3: Which test is used to identify the polarity of an electrolytic capacitor?

Which action should you take?

Choose only one option

Visual inspection for markings

Voltage drop test

ESR test

Continuity test

Question 4: What is the advantage of using a bed-of-nails tester for PCB testing?

Which action should you take?

Choose only one option

Improved thermal efficiency

Reduced power consumption

Enhanced impedance control

Low testing time and high throughput

Question 5: In selective soldering, which parameter is crucial to prevent thermal stress on sensitive components during the soldering process?

Which action should you take?

Choose only one option

Wave height

Soldering speed and heat profile

Flux type

Solder alloy type

Question 6: During thermal profiling of a PCB with a thermal imaging camera, which calibration step is necessary to ensure accurate temperature readings?

Which action should you take?

Choose only one option

Use the camera's default settings without calibration.

Only adjust the focus of the camera for clarity.

Calibrate the camera using a known temperature reference under the same ambient conditions.

Calibrate the camera in a different environment and apply the settings.