Viraj Profiles Engineer Trainee Interview Questions and Answers

Practice all aptitude questions and also gain few core engineering knowledge for core section.

Q1. Tell me about Yourself
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Q1. Tell me your internship learning and experience
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Each question carry different marks some carry 1 mark few 2 mark and few 5 marks we need to answer accordingly

20 question 60 minutes each question carry 5 marks

Q1. Asked questions from area of interest and intern
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Q2. Define Entropy with example
Ans. 
Entropy is a measure of disorder or randomness in a system.
• Entropy is a concept in thermodynamics that quantifies the degree of randomness or disorder in a system.

• It is a measure of the number of possible arrangements or states that a system can have.

• Entropy increases with the increase in randomness or disorder.

• For example, a deck of cards in perfect order has low entropy, but shuffling the deck increases the entropy.

• A...read more
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Q3. Basic laws of thermodynamics
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The basic laws of thermodynamics govern the behavior of energy in various systems.
• The first law of thermodynamics, also known as the law of energy conservation, states that energy cannot be created or destroyed, only transferred or transformed.

• The second law of thermodynamics states that the entropy of an isolated system always increases over time.

• The third law of thermodynamics states that as the temperature approache...read more
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Q4. Define thermodynamics equilibrium
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Thermodynamic equilibrium is a state where there is no net change in the macroscopic properties of a system over time.
• Thermodynamic equilibrium is a stable state where all forces and processes within a system are balanced.

• In thermodynamic equilibrium, the system is at a uniform temperature and pressure throughout.

• There is no transfer of heat or work between the system and its surroundings in thermodynamic equilibrium.

• E...read more
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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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Round 1 consists of written test which is conducted online. This written test consists of aptitude and technical questions .

Q1. Round 2 consists of personal interview in which they asked about the internship
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Relatively easier than usual aptitude tests
there was another advanced aptitude test also

Q1. Very cool person taking the interview and light environment
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It was of 3 hours and include mechanical engineering concepts

GD topic was renewable energy sources