LG Electronics Executive Engineer Interview Questions and Answers

Q1. About your current company & your role in there, major activity of your which helping your department.
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Q2. Draw some case study & explain improvements which you have done there
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Improved efficiency of production line at XYZ manufacturing plant
• Implemented lean manufacturing principles to reduce waste and increase productivity

• Introduced automation in certain processes to reduce manual labor and increase accuracy

• Optimized supply chain management to ensure timely delivery of raw materials

• Trained and empowered employees to identify and solve problems on the production line

• Implemented a continuous i...read more
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Q1. Where do you see yourself in 5 years?
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In five years, I envision myself as a lead engineer, driving innovative projects and mentoring junior engineers to foster growth.
• Leading a team on complex projects, such as developing a new software platform that improves user experience.

• Mentoring junior engineers, helping them to develop their skills through regular code reviews and knowledge-sharing sessions.

• Contributing to strategic planning, ensuring that engineeri...read more
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Q2. What are your salary expectations?
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Q3. What is your family background?
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Q4. Share details of your previous job.
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Q5. Why should we hire you?
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Q6. Why are you looking for a change?
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Q7. What are your strengths and weaknesses?
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Q8. Tell me about yourself.
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1 hour - Trees, Array, Hashmap, DP, CP etc

Q1. Project discussion
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Q1. What are the basics of the refrigeration cycle?
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The refrigeration cycle is a thermodynamic process that removes heat from a designated area to lower its temperature.
• 1. Evaporation: Refrigerant absorbs heat from the environment, turning from liquid to gas.

• 2. Compression: The gas is compressed, increasing its pressure and temperature.

• 3. Condensation: The hot gas releases heat to the surroundings, condensing back into a liquid.

• 4. Expansion: The liquid refrigerant expan...read more
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Q2. What is the difference between chillers and Variable Refrigerant Flow (VRF) systems? What are the different types of compressors?
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Chillers and VRF systems differ in design, application, and efficiency, with various compressor types influencing performance.
• Chillers are centralized cooling systems, while VRF systems are decentralized and allow for individual zone control.

• Chillers typically use water or refrigerant to cool large buildings, e.g., centrifugal chillers for commercial use.

• VRF systems use refrigerant as the cooling medium and can simulta...read more
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Q3. What is COP and heat load calculations. Types of PCBs in VRF. What is AHU and types
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COP measures efficiency in heating/cooling systems; heat load calculations determine required capacity for HVAC systems.
• COP (Coefficient of Performance) is the ratio of useful heating or cooling provided to the energy consumed.

• Heat load calculations assess the thermal energy needed to maintain desired indoor temperatures.

• Types of PCBs (Printed Circuit Boards) in VRF (Variable Refrigerant Flow) systems include control P...read more
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