Engineers India Production Engineer Interview Questions and Answers

Q1. Shaft daimeter 40 mm wy bearings no
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Q2. Ferro silicon melting point wy
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Q3. Which composition is a ci casting
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CI casting refers to cast iron casting, which is made from a composition of iron, carbon, and silicon.
• CI casting stands for cast iron casting.

• It is made from a composition of iron, carbon, and silicon.

• The carbon content in CI casting is typically between 2.1% and 4%.

• The silicon content in CI casting is typically between 1% and 3%.

• CI casting is known for its excellent castability, good machinability, and high wear resis
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Q4. High crome metal pouring temperature
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The pouring temperature of high chrome metal is typically between 1,600 to 1,800 degrees Celsius.
• High chrome metal is commonly used in applications that require high temperature resistance and corrosion resistance.

• The pouring temperature is crucial to ensure proper flow and solidification of the metal.

• The specific pouring temperature may vary depending on the exact composition of the high chrome metal and the desired p...read more
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Q5. Maild steel campotion
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Q1. Tell me about yourself
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Experienced production engineer with a background in mechanical engineering and a passion for optimizing manufacturing processes.
• Graduated with a degree in Mechanical Engineering

• Worked for 5 years in the manufacturing industry

• Implemented lean manufacturing principles to improve production efficiency

• Led a team in reducing production costs by 15% through process optimization
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Q2. What is knocking?
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Knocking is an abnormal combustion phenomenon in internal combustion engines.
• Knocking occurs when the air-fuel mixture in the engine's cylinders ignites prematurely or unevenly.

• It produces a knocking or pinging sound, which can cause damage to the engine if not addressed.

• Factors contributing to knocking include low octane fuel, high engine temperatures, and incorrect ignition timing.
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Topics covered technical and aptitude questions

Q1. Core technical questions
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Q2. How does a transformer works. Detailed working and parameters to monitor
Ans. 
A transformer works by transferring electrical energy between two or more circuits through electromagnetic induction.
• Transformers consist of two coils of wire, known as the primary and secondary coils, wrapped around a core made of iron or other magnetic materials.

• When an alternating current flows through the primary coil, it creates a changing magnetic field which induces a voltage in the secondary coil.

• The ratio of t...read more
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Q1. How will you identify if a pump is cavitating while working on a DCS panel?
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To identify if a pump is cavitating while working on a DCS panel, you can look for certain indicators.
• Monitor the pump's suction pressure. If it is fluctuating or dropping below the specified range, it may indicate cavitation.

• Check the pump's discharge pressure. If it is higher than normal, it could be a sign of cavitation.

• Listen for unusual noises such as a rattling or grinding sound coming from the pump.

• Inspect the p...read more
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Q2. How would you prepare a hydrocarbon vessel for vessel entry?
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To prepare a hydrocarbon vessel for vessel entry, follow these steps:
• Ensure the vessel is properly isolated from the process and all sources of energy

• Ventilate the vessel to remove any flammable or toxic gases

• Perform a thorough inspection of the vessel for any signs of leaks or damage

• Implement proper lockout/tagout procedures to prevent accidental activation of equipment

• Provide appropriate personal protective equipment...read more
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My GD topic was renewable energy.

Q1. Tell me about yourself
Ans. 
I am a Senior Engineer with 10+ years of experience in designing and implementing complex systems.
• 10+ years of experience in engineering

• Specialize in designing and implementing complex systems

• Strong problem-solving skills

• Experience with various programming languages such as Java, Python, and C++
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Q2. Why do you want to leave your previous company and join GAIL
Ans. 
Seeking new challenges and growth opportunities at GAIL.
• Desire for new challenges and opportunities for growth

• Interested in working in a different industry or with different technologies

• Attracted to GAIL's reputation and projects

• Seeking a more collaborative and innovative work environment
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Q3. What do your parents do
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My parents are both retired now, but my father used to work as a civil engineer and my mother was a teacher.
• Father worked as a civil engineer

• Mother was a teacher

• Both are retired now
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Q4. Have you ever visited Delhi earlier
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Yes, I have visited Delhi earlier for a business trip.
• Visited Delhi for a business trip

• Explored historical sites like Red Fort and Qutub Minar

• Enjoyed local cuisine like butter chicken and chaat
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Q5. How did you reach Noida for interview
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Q6. Where are you staying in Noida for interview process
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I am staying at a hotel in Sector 18, Noida for the interview process.
• Staying at a hotel in Sector 18, Noida

• Close to the interview location

• Comfortable accommodation for the duration of the process
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Q7. Related family background
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Q1. Detailed technical questions about bearing, pump, furnace tubes (1st and 2nd pass)MOC, TLE MOC, heat exchanger tube MOC, TEMA codes and classification etc.
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Q2. Decoking process of cracking furnace, Naphtha circuit of furnace with sketches,
Ans. 
Decoking process involves removing coke deposits from cracking furnace and naphtha circuit to maintain efficiency.
• Decoking process involves burning off coke deposits using controlled combustion.

• Mechanical decoking involves using high-pressure water jets to remove coke deposits.

• Chemical decoking involves using solvents or acids to dissolve coke deposits.

• Regular decoking is essential to prevent blockages and maintain fur
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Q3. Detailed refrigeration cycles
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Refrigeration cycles are thermodynamic processes used in refrigerators and air conditioners to transfer heat from a low temperature reservoir to a high temperature reservoir.
• Refrigeration cycles typically involve four main components: compressor, condenser, expansion valve, and evaporator.

• The refrigerant undergoes a cycle of compression, condensation, expansion, and evaporation to absorb heat from the space being coole...read more
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Q4. Safety related questions which I couldn't answer well
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Q5. Safety procedures before starting of hot job
Ans. 
Safety procedures before starting a hot job include obtaining a hot work permit, conducting a hazard assessment, ensuring proper ventilation, and having fire extinguishing equipment nearby.
• Obtain a hot work permit before starting any hot job

• Conduct a hazard assessment to identify potential risks

• Ensure proper ventilation in the work area to prevent buildup of flammable gases

• Have fire extinguishing equipment nearby and r
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Q6. Furnace tubes Welding related questions
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Q7. Scaffolding and insulation related general questions (easy)
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