Schneider Electric Senior Design Engineer Interview Questions and Answers

General questions regarding current events mathematical logical questions etc

Q1. What is tolerance stack up & what is IT grades?
Ans. 
Tolerance stack up is the accumulation of variations in dimensions and tolerances in a product design. IT grades are international standards for tolerances.
• Tolerance stack up occurs when the cumulative effect of individual part tolerances results in a deviation from the intended design.

• IT grades, such as IT01, IT0, IT1, etc., are used to specify the level of tolerance allowed for a particular dimension or feature.

• Under...read more
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Q2. Calculations based on pneumatics and hydraulic selection etc.
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Q3. What is anti friction bearings explain.
Ans. 
Anti-friction bearings are designed to reduce friction between moving parts, allowing for smooth and efficient operation.
• Anti-friction bearings use rolling elements (such as balls or rollers) to reduce friction between two surfaces in contact.

• They are commonly used in machinery and equipment to support rotating or linear motion.

• Examples include ball bearings, roller bearings, and needle bearings.

• These bearings are desi...read more
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Q4. What is type of splines?
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Splines are mechanical components used to transfer torque between two rotating objects while allowing for slight misalignment or movement.
• Splines are used in mechanical engineering to transfer torque between shafts or other rotating components.

• There are different types of splines including involute, straight-sided, and serrated splines.

• Splines allow for slight misalignment or movement between the connected components w
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Q5. What is PU and PTFE explain
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PU stands for polyurethane, a versatile polymer used in various applications. PTFE stands for polytetrafluoroethylene, a synthetic fluoropolymer known for its non-stick properties.
• PU is a type of polymer that can be rigid or flexible, commonly used in foam insulation, coatings, adhesives, and sealants.

• PTFE is a synthetic fluoropolymer with high heat resistance and low friction, often used in non-stick cookware, gaskets
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Q1. What is your present work?
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Q2. 1.Knowledge on HVAC . 2.Explaine an operation sequence on any of the HVAC system . 3. Good knowledge on Field devices and PID. 4. Communication Protocols . Modbus , bacnet etc. 5. Understanding on SO...read more
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Q1. What is your family background?
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Q2. What are your salary expectations?
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Q3. Share details of your previous job.
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Q4. Why are you looking for a change?
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Q5. Tell me about yourself.
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Aptitude test is quite similar to GATE CET etc like engineering questions based on all subjects from engineering. These questions are tricky ones. Calculator is allowed while giving test.

Depending upon for which department and which software you have come for the interview, one complex 3D model is given for all candidates to perform on that particular software to analyse his/her drawing reading skills.

Q1. Basic welding information, like type of welding process and the symbols
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Q2. Geometric dimensioning and tolerancing symbols and their use.
Ans. 
Geometric dimensioning and tolerancing symbols are used to specify the dimensions, tolerances, and geometric characteristics of a part.
• GD&T symbols are used to communicate design requirements and ensure proper fit, function, and interchangeability of parts.

• Some common GD&T symbols include position, concentricity, perpendicularity, and flatness.

• These symbols are typically placed on engineering drawings and provide preci...read more
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Q3. Questions related to your projects you have done in your previous jobs. What was your role in it and challenges you faced.
Ans. Make sure you know everything you have added in your CV.
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Q4. Software related questions.
Ans. Know one thing, this is service industry, everything here is software proficiency. So prepare well.
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Q5. Domain related questions.
Ans. Read basic for the domain you are going for.
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Q1. Tell me about yourself.
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Q2. They will check if you are comfortable with flexible or project specific working timings.
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Q3. They will check if you are comfortable for late night sittings for project deliverables.
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Q1. HVAC basic questions, like explain refrigeration cycle. purpose of condenser, evaporator, expansion valve.
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Q2. Describe your current job responsibilities?
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Q3. Difference between radiator and intercooler?
Ans. 
Radiator cools engine coolant while intercooler cools compressed air from turbocharger or supercharger.
• Radiator is used in internal combustion engines to cool the engine coolant

• Intercooler is used in turbocharged or supercharged engines to cool the compressed air

• Radiator is located in front of the engine while intercooler is located between the turbocharger/supercharger and the engine

• Radiator reduces the temperature of...read more
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Q4. Why inner fins are used in intercooler?
Ans. 
Inner fins are used in intercooler to increase heat transfer area and improve cooling efficiency.
• Inner fins increase the surface area of the intercooler, allowing for more heat transfer.

• This improves the cooling efficiency of the intercooler, allowing for better performance of the engine.

• Inner fins can be designed in various shapes and sizes to optimize the cooling performance.

• Examples of intercoolers with inner fins i...read more
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Q5. Do you have experience of creo?
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Q1. Tell me about yourself.
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Q2. Tell me about yourself
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Q3. Will you explain refrigeration cycle?
Ans. 
Refrigeration cycle is a process of removing heat from a low-temperature reservoir and transferring it to a high-temperature reservoir.
• The cycle consists of four main components: compressor, condenser, expansion valve, and evaporator.

• The refrigerant is compressed by the compressor and then condensed in the condenser, releasing heat.

• The high-pressure liquid refrigerant then passes through the expansion valve, where it e...read more
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Q4. What is your current job profile?
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Q1. What are your salary expectations?
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Q2. What is your family background?
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Q3. Share details of your previous job.
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Q4. Why are you looking for a change?
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Q5. Tell me about yourself.
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Q1. Interviewer will ask to give CAD test first.
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Q2. And other question mostly depends on 1. Current job/project. 2. Processes. 3. HVAC Domain knowledge.
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Q1. Nothing. Only salary discussion done.
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Quants, reasoning along with verbal

Q1. What is TAS, OIC, TFMS, Radar, DCV
Ans. 
TAS is True Airspeed, OIC is Operational Information Center, TFMS is Traffic Flow Management System, Radar is a detection system, DCV is a Digital Control Valve.
• TAS is the speed of an aircraft relative to the air through which it is flying.

• OIC is a facility that provides real-time situational awareness and decision support to air traffic managers.

• TFMS is a system that manages the flow of air traffic in the National Air...read more
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Q2. What is Rosov, dbbv, BQD, Barrigade logic, PLC, SCADA
Ans. 
Rosov, dbbv, BQD, Barrigade logic, PLC, SCADA are all related to engineering and automation.
• Rosov is a type of valve used in the oil and gas industry.

• dbbv stands for Double Block and Bleed Valve, used to isolate sections of a pipeline.

• BQD is a type of circuit breaker used in electrical systems.

• Barrigade logic is a type of control system used in industrial automation.

• PLC stands for Programmable Logic Controller, used to...read more
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