Testing Engineer Interview Questions

1,603 testing engineer interview questions shared by candidates

✅ Power Electronics & Circuits 1. What is a MOSFET? 2. What is the difference between Buck, Boost, and Buck-Boost converters? 3. How to reduce 5V to 3.3V in a PCB circuit? 4. What increases noise in a sensor? 5. How to reduce noise in sensor readings? --- ✅ Basic Electronics 6. If Vin is 12V and R1 = R2, what is the voltage divider output (Vout)? 7. What is the power dissipated when current is 2A and resistance is 100Ω? 8. Find the reactance when capacitance is 10nF and frequency is 100kHz. --- ✅ Microcontroller & Embedded 9. How to read ADC value from a microcontroller? --- ✅ Communication Protocols 10. What is UART? 11. What is I2C? 12. What is SPI?
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Hardware Testing Engineer

Interviewed at Apmkingstrack Technologies

5
Jul 30, 2025

✅ Power Electronics & Circuits 1. What is a MOSFET? 2. What is the difference between Buck, Boost, and Buck-Boost converters? 3. How to reduce 5V to 3.3V in a PCB circuit? 4. What increases noise in a sensor? 5. How to reduce noise in sensor readings? --- ✅ Basic Electronics 6. If Vin is 12V and R1 = R2, what is the voltage divider output (Vout)? 7. What is the power dissipated when current is 2A and resistance is 100Ω? 8. Find the reactance when capacitance is 10nF and frequency is 100kHz. --- ✅ Microcontroller & Embedded 9. How to read ADC value from a microcontroller? --- ✅ Communication Protocols 10. What is UART? 11. What is I2C? 12. What is SPI?

There were three parts: First part: Ice breaking Q: Introduce yourself. Q: Why QA? Q: Testing related basic questions: Unit testing, Integration testing, Boundary value analysis Second part: Technical Scenario 1: Testing a Bluetooth speaker that is having sound problem. Scenario 2: Explaining priority-base testing approach for a given website. Last part: Regular interview questions Q: Expected salary? Q: Notice period? Q: Plan to study abroad? Q: Previous experience?
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Associate Software Engineer, Testing

Interviewed at Therap BD

3.8
Mar 21, 2024

There were three parts: First part: Ice breaking Q: Introduce yourself. Q: Why QA? Q: Testing related basic questions: Unit testing, Integration testing, Boundary value analysis Second part: Technical Scenario 1: Testing a Bluetooth speaker that is having sound problem. Scenario 2: Explaining priority-base testing approach for a given website. Last part: Regular interview questions Q: Expected salary? Q: Notice period? Q: Plan to study abroad? Q: Previous experience?

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