Deep Industries Production Graduate Engineer Trainee Interview Questions and Answers

Question are simple and easy to solve

Q1. How the vcr works
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Q2. What is navier stokes equation
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Q1. What is quenching, normalising and properties of martensite
Ans. 
Quenching, normalising, and properties of martensite are heat treatment processes used to alter the properties of metals.
• Quenching is a rapid cooling process used to harden metals by trapping the atoms in a specific crystalline structure.

• Normalising is a slower cooling process used to refine the grain structure of metals, improving their toughness and ductility.

• Martensite is a hard, brittle phase of steel formed by que...read more
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Q2. What is melting point of plain steel
Ans. 
The melting point of plain steel is approximately 2,500 degrees Fahrenheit.
• Melting point of plain steel can vary depending on the specific composition of the steel.

• Generally, plain carbon steel melts at around 2,500 degrees Fahrenheit.

• Alloy steels may have different melting points due to the addition of other elements.

• Melting point can also be affected by the rate of heating and cooling.
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The aptitude test wasnt easy to crack

Q1. Corrosion reaction
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Q2. Questions on thermodynamics
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About basic information about subject

Q1. Why do you join RIL
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Time distance, time speed

Q1. Explain performance curves of centrifugal pump
Ans. 
Performance curves of centrifugal pump show the relationship between flow rate, head, and efficiency.
• Performance curves show how a pump performs at different flow rates and heads.

• The curve typically includes lines for efficiency, power consumption, and NPSH requirements.

• The shape of the curve can indicate the pump's operating range and efficiency.

• Operating a pump outside of its recommended range can lead to issues like
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Q2. Explain best efficency point of centrifugal pump
Ans. 
The best efficiency point of a centrifugal pump is the operating point where the pump achieves the highest efficiency.
• The best efficiency point is typically located near the pump's BEP (Best Efficiency Point) on the pump curve.

• At the best efficiency point, the pump operates with the least amount of energy consumption and highest output.

• Operating the pump away from the best efficiency point can lead to decreased efficie...read more
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Q3. Explain joule Thomson effect
Ans. 
Joule Thomson effect is the change in temperature of a gas when it is allowed to expand without performing work.
• Occurs when a gas expands through a valve or porous plug

• No external work is done on or by the gas

• Temperature change depends on the gas properties and initial conditions

• Used in natural gas processing to cool the gas for further processing
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Q4. Explain iron carbon phase diagram
Ans. 
Iron carbon phase diagram shows the phases of iron and carbon at different temperatures and compositions.
• Shows the phases of iron and carbon at different temperatures and compositions

• Consists of regions for austenite, ferrite, cementite, and pearlite

• Helps in understanding the microstructure of steel

• Critical points like eutectic point and eutectoid point are important

• Used in heat treatment processes to control the prope
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Q5. Explain series and parallel operation of pumps
Ans. 
Series and parallel operation of pumps involve connecting multiple pumps together to achieve desired flow rates and pressures.
• In series operation, pumps are connected one after the other to increase the total head or pressure that the system can deliver.

• In parallel operation, pumps are connected side by side to increase the total flow rate that the system can deliver.

• Series operation is used when high pressure is requi...read more
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Not that difficult questions

Q1. Yarn spinning and it's types
Ans. 
Yarn spinning is the process of creating yarn from fibers. Types include ring spinning, open-end spinning, and friction spinning.
• Yarn spinning is the process of twisting fibers together to create a continuous strand of yarn.

• Ring spinning is a traditional method where the yarn is twisted and wound onto a bobbin.

• Open-end spinning is a newer method where fibers are twisted together using air jets.

• Friction spinning involve...read more
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Q2. Project and internship
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