JSW Group Engineer Trainee Interview Questions and Answers

Aptitude test was held by an online platform.

Q1. What is the second law of thermodynamics?
Ans. 
The second law of thermodynamics states that the total entropy of an isolated system can never decrease over time.
• Entropy in a closed system tends to increase over time

• Heat energy naturally flows from hot to cold objects

• Efficiency of energy conversion processes is limited by the second law of thermodynamics
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Q2. What is the difference between creep and fatigue?
Ans. 
Creep is the slow, time-dependent deformation of a material under constant load, while fatigue is the weakening of a material due to repeated loading and unloading.
• Creep is a time-dependent phenomenon, while fatigue is a cyclic phenomenon.

• Creep occurs at high temperatures and constant stress, while fatigue occurs at lower temperatures and varying stress levels.

• Creep leads to permanent deformation, while fatigue can lea...read more
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Q3. What is thermocouple?
Ans. 
A thermocouple is a temperature sensor that consists of two different metals joined together at one end, which produces a voltage proportional to the temperature difference between the junction and the other end.
• Consists of two different metals joined together at one end

• Produces a voltage proportional to the temperature difference

• Commonly used in industrial applications for temperature measurement
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Q4. What is t-t-t diagram?
Ans. 
T-t-t diagram is a time-temperature-transformation diagram used in materials science to understand the transformation of phases in a material.
• T-t-t diagram shows the relationship between time, temperature, and the transformation of phases in a material.

• It helps in predicting the microstructure of a material based on the cooling rate and temperature.

• T-t-t diagrams are commonly used in metallurgy to understand the phase
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Q5. What is annealing?
Ans. 
Annealing is a heat treatment process used to soften metals and increase their ductility.
• Annealing involves heating a metal to a specific temperature and then slowly cooling it to room temperature.

• This process helps to relieve internal stresses, improve machinability, and enhance electrical conductivity.

• Examples of metals that are commonly annealed include steel, copper, and aluminum.
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Q6. What is the critical temperature of steel?
Ans. 
The critical temperature of steel is the temperature at which it loses its magnetic properties.
• The critical temperature of steel is around 770°C (1420°F).

• Above this temperature, steel becomes non-magnetic and undergoes a phase change.

• The critical temperature varies depending on the type of steel and its composition.
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Q7. Types of steel?how we can differentiate them?
Ans. 
Types of steel include carbon steel, alloy steel, stainless steel, and tool steel. They can be differentiated based on their composition, properties, and applications.
• Carbon steel contains primarily carbon and iron, with low amounts of other elements. It is commonly used in construction and manufacturing.

• Alloy steel contains additional elements such as manganese, silicon, and copper to enhance its properties. It is use...read more
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Normal apti questions

Q1. Introduce yourself Fe - c diagram Favorite subject
Ans. 
I am a recent graduate with a passion for engineering, particularly in the field of materials science. I have a strong understanding of Fe-C diagram and my favorite subject is thermodynamics.
• Recent graduate with a passion for engineering

• Special interest in materials science

• Strong understanding of Fe-C diagram

• Favorite subject is thermodynamics
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Q2. Why have you done coding ifyou are interested in non core
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Q3. Are you willing to relocate
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Q4. Difference between engineering and true stress and strain
Ans. 
Engineering stress and strain are calculated using original dimensions, while true stress and strain take into account the change in dimensions during deformation.
• Engineering stress is calculated using the original cross-sectional area of the specimen, while true stress considers the actual cross-sectional area at any given point during deformation.

• Engineering strain is calculated based on the original length of the sp...read more
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Q5. Is automation take core jobs ??
Ans. 
Automation can lead to job displacement in some industries, but also creates new job opportunities in others.
• Automation can replace repetitive tasks, leading to job loss in certain industries.

• However, automation also creates new job opportunities in fields like robotics, AI, and software development.

• Workers can be upskilled to work alongside automation, increasing efficiency and productivity.

• Overall, automation changes...read more
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OA consisted of Apti and Technical questions

Q1. It was basically personality test
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Topic was effects of Digitization in metal manufacturing industry

Q1. Questions about myself and regarding my resume. Technical questions were also being asked
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