1. Soldering Skills
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Can you explain the steps you follow while soldering a component on a PCB?
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What is the difference between a good solder joint and a bad one?
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What tools do you typically use for soldering?
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How do you remove a component from a PCB without damaging it?
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Have you worked with SMD components? If yes, how is it different from through-hole soldering?
2. Power Board Repair
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Have you repaired power supply boards before? Can you describe one example?
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What are the common faults in SMPS/power boards?
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How do you identify a faulty component in a power circuit?
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What precautions do you take while working on high-voltage boards?
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What tools do you use for troubleshooting power boards?
3. Electronics Components Testing
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How do you test a resistor, capacitor, and diode using a multimeter?
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What is continuity testing?
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How do you identify if a capacitor is faulty?
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Can you test a transistor using a multimeter? Explain briefly.
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What is the difference between analog and digital multimeters?
4. Basic Electronics Knowledge
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What is a rectifier? What are its types?
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What is a diode and how does it work?
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What is a MOSFET and where is it used?
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Difference between transistor and MOSFET?
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What is AC and DC?
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What is voltage, current, and resistance?
5. Circuit Understanding & PCB Design
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Can you read and understand circuit schematics?
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Have you used any PCB design tools? (e.g., Eagle, KiCad, Altium)
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What are the basic steps in designing a PCB?
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What is the difference between schematic and PCB layout?
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What is grounding in PCB design and why is it important?
