AP Management Consultants Interview Questions and Answers

Soldering and desoldering test

Q1. Draw power supply circuit for ups
Ans. 
A power supply circuit for UPS is required.
• The circuit should include a rectifier to convert AC to DC.

• A battery should be included to provide backup power.

• A voltage regulator should be used to maintain a steady output voltage.

• A fuse or circuit breaker should be included for safety.

• Examples of components that can be used include diodes, capacitors, transformers, and ICs.
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Q2. Do you have hands on experience in soldering
Ans. 
Yes, I have hands-on experience in soldering.
• I have worked on various electronic projects where soldering was required.

• I am familiar with different types of soldering techniques such as through-hole and surface mount soldering.

• I have experience in using different types of soldering tools such as soldering iron, soldering station, and hot air rework station.

• I am also aware of the safety precautions that need to be taken...read more
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Q3. How many PCB do you solder with in one day
Ans. 
On average, I solder around 50-60 PCBs per day.
• The number of PCBs soldered per day can vary depending on the complexity of the board and the amount of rework required.

• I prioritize quality over quantity to ensure that each PCB is soldered correctly and meets the required standards.

• I am always looking for ways to improve my efficiency and speed without sacrificing quality.

• I keep track of my daily output to monitor my pro...read more
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Q4. How to test igbt
Ans. 
IGBT can be tested using a multimeter or an oscilloscope.
• Check for continuity between the collector and emitter terminals

• Measure the gate-emitter voltage to ensure it is within the specified range

• Check for any abnormal voltage spikes or waveforms using an oscilloscope

• Perform a power test to ensure the IGBT can handle the required load

• Compare the test results with the manufacturer's specifications
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Q5. How to test MOSFET in multimeter
Ans. 
To test MOSFET in multimeter, set the multimeter to diode mode and connect the MOSFET's gate, source, and drain to the multimeter probes.
• Set the multimeter to diode mode

• Connect the MOSFET's gate to the positive probe and source to the negative probe

• Reverse the probes and check the reading

• Connect the MOSFET's drain to the positive probe and source to the negative probe

• Reverse the probes and check the reading

• If the readi...read more
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