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Q1. What are the tensile forces acts on material
Ans. 
Tensile forces are forces that stretch or pull materials apart.
• Tensile forces act in the opposite direction of compressive forces

• Examples of tensile forces include stretching a rubber band or pulling on a rope

• Tensile strength is a measure of a material's ability to withstand tensile forces
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Q2. Write all formulas you know of Fluid Mechanics
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Formulas in Fluid Mechanics
• Bernoulli's equation: P + 0.5ρv^2 + ρgh = constant

• Continuity equation: A1v1 = A2v2

• Navier-Stokes equation: ρ(∂v/∂t + v∇v) = -∇P + μ∇^2v + ρg

• Ideal gas law: PV = nRT

• Poiseuille's Law: Q = πr^4(ΔP)/(8ηL)
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Q3. Laws of thermodynamics
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The fundamental laws of thermodynamics govern the behavior of energy in systems.
• First Law of Thermodynamics: Energy cannot be created or destroyed, only transferred or converted.

• Second Law of Thermodynamics: The entropy of an isolated system will always increase over time.

• Third Law of Thermodynamics: As temperature approaches absolute zero, the entropy of a system approaches a minimum value.

• Examples: A car engine conve...read more
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Q4. What is Fouriers Law write its equation
Ans. 
Fourier's Law describes the flow of heat through a material.
• Fourier's Law states that the rate of heat transfer through a material is directly proportional to the negative gradient of temperature and the area perpendicular to the direction of heat flow.

• The equation for Fourier's Law is q = -k * A * (dT/dx), where q is the heat transfer rate, k is the thermal conductivity of the material, A is the cross-sectional area, ...read more
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Q5. Explain Iron Carbon phase diagram
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The Iron-Carbon phase diagram illustrates the phases and microstructures of iron-carbon alloys as a function of temperature and composition.
• Shows the phases of iron and carbon at different temperatures and compositions

• Includes regions for austenite, ferrite, cementite, and pearlite

• Critical points such as eutectic point and eutectoid point are marked

• Used to predict the microstructure of steel based on composition and he
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Q6. Stress Strain Curve Explain
Ans. 
The stress-strain curve shows the relationship between stress (force applied) and strain (resulting deformation) in a material.
• The curve typically consists of three main regions: elastic deformation, plastic deformation, and fracture.

• In the elastic region, the material deforms elastically and returns to its original shape when the stress is removed.

• The plastic region is where permanent deformation occurs, but the mater...read more
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Q7. Calculate SFD & BMD
Ans. 
SFD and BMD are calculated using equations of equilibrium and relationships between load, shear force, and bending moment.
• Calculate reactions at supports using equations of equilibrium

• Determine the shear force at different points along the beam by considering the applied loads and reactions

• Calculate the bending moment at different points by integrating the shear force diagram

• Plot the SFD and BMD based on the calculated...read more
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Q8. How to Calculate velocity of fluid flowing through pipe
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Velocity of fluid flowing through a pipe can be calculated using the formula Q = A * V, where Q is the flow rate, A is the cross-sectional area of the pipe, and V is the velocity of the fluid.
• Calculate the cross-sectional area of the pipe using the formula A = π * r^2, where r is the radius of the pipe.

• Determine the flow rate (Q) of the fluid, which is typically measured in cubic meters per second (m^3/s) or liters per...read more
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Q9. What is Difference between entropy and enthalpy
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Entropy is a measure of disorder or randomness in a system, while enthalpy is a measure of the heat energy in a system.
• Entropy is a thermodynamic property that measures the amount of energy in a system that is not available to do work.

• Enthalpy is a thermodynamic property that measures the total heat content of a system.

• Entropy increases in irreversible processes, while enthalpy remains constant.

• Entropy is denoted by S,...read more
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Q10. Draw Refrigeration Cycle Graph
Ans. 
The Refrigeration Cycle graph shows the process of cooling a space by transferring heat from inside to outside.
• The cycle starts with the refrigerant entering the compressor as a low-pressure gas.

• The refrigerant is compressed, raising its temperature and pressure, before entering the condenser where it releases heat to the surroundings.

• After losing heat, the refrigerant becomes a high-pressure liquid and flows into the ...read more
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Q11. Draw vapour absorption cycle graph
Ans. 
The vapor absorption cycle graph shows the relationship between pressure, temperature, and enthalpy during the process.
• The graph typically shows pressure on the y-axis and temperature on the x-axis.

• It includes lines representing the various stages of the cycle such as evaporation, absorption, and desorption.

• The enthalpy values at different points in the cycle can also be plotted on the graph.

• Example: The graph will sho...read more
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Q12. Draw Rankine otto & diesel cycle graph
Ans. 
The Rankine, Otto, and Diesel cycle graphs are commonly used in thermodynamics to analyze different types of heat engines.
• The Rankine cycle is used in steam power plants and consists of four processes: heat addition, isentropic expansion, heat rejection, and isentropic compression.

• The Otto cycle is used in spark-ignition engines and consists of four processes: isentropic compression, constant volume heat addition, isen...read more
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Q1. Tell me about youself?
Ans. 
I am a recent graduate with a degree in engineering, eager to learn and grow in a professional setting.
• Completed Bachelor's degree in Mechanical Engineering

• Interned at XYZ Company, where I gained experience in project management

• Proficient in CAD software such as SolidWorks

• Strong problem-solving and analytical skills

• Excellent communication and teamwork abilities
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Q2. What are your projects ?
Ans. 
I have worked on projects related to renewable energy systems and sustainable building design.
• Designed and implemented a solar panel system for a residential building

• Conducted energy audits to optimize energy efficiency in buildings

• Researched and proposed sustainable materials for construction projects
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Q3. What you did in internship?
Ans. 
I worked on designing and implementing a new software system for tracking inventory and managing orders.
• Developed a user-friendly interface for inputting and accessing data

• Integrated barcode scanning technology for efficient inventory management

• Collaborated with team members to troubleshoot and improve system functionality
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Q4. What are your favourite subjects ?
Ans. 
My favorite subjects are Mathematics, Physics, and Computer Science.
• Mathematics - I enjoy solving complex problems and equations.

• Physics - I am fascinated by the laws of nature and how things work in the universe.

• Computer Science - I love coding and developing new software applications.
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Q5. What is 2nd law of thermodynamics?
Ans. 
The 2nd law of thermodynamics states that the total entropy of an isolated system can never decrease over time.
• Entropy of a system tends to increase over time

• Heat energy naturally flows from hot to cold objects

• Efficiency of energy conversion processes is limited by the 2nd law
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Q6. What are the kelvin plank and claussis statement?
Ans. 
Kelvin-Planck and Clausius statements are two fundamental principles of thermodynamics.
• Kelvin-Planck statement: It is impossible to construct a device that operates in a cycle and produces no effect other than the extraction of heat from a single reservoir and the performance of an equivalent amount of work.

• Clausius statement: It is impossible to construct a device that operates in a cycle and produces no effect other ...read more
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Q7. What is difference between 4 stroke and 2 stroke engines?
Ans. 
4 stroke engines have separate intake, compression, power, and exhaust strokes, while 2 stroke engines combine intake and compression in one stroke and power and exhaust in another.
• 4 stroke engines have separate intake, compression, power, and exhaust strokes

• 2 stroke engines combine intake and compression in one stroke and power and exhaust in another

• 4 stroke engines are more fuel efficient and produce less pollution

• 2 ...read more
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Q8. What if we put diesel in SI engine and petrol in CI engine?
Ans. 
Putting diesel in SI engine and petrol in CI engine would lead to inefficient combustion and potential damage to the engines.
• Diesel is designed to be used in compression ignition (CI) engines, which rely on high compression ratios to ignite the fuel. Using diesel in a spark ignition (SI) engine would result in incomplete combustion and poor performance.

• Petrol is designed for use in spark ignition (SI) engines, which re...read more
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Q9. Differentiate b/w CI and SI engine?
Ans. 
CI engines use compression ignition while SI engines use spark ignition.
• CI engines compress air to high pressures, causing the fuel to ignite spontaneously

• SI engines use spark plugs to ignite the fuel-air mixture

• CI engines are more fuel efficient but produce more emissions

• Examples of CI engines include diesel engines, while SI engines include gasoline engines
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Q10. What is your final year project ? Asked in deep
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Q1. What do yo know about company??
Ans. 
Company is a leading engineering firm specializing in renewable energy solutions.
• Company was founded in 2005 and has since grown to become a key player in the renewable energy sector.

• They offer a wide range of services including solar panel installation, wind turbine maintenance, and energy efficiency consulting.

• Company has completed projects in multiple countries, showcasing their global reach and expertise.

• They prior...read more
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Q2. What is your strength and weakness ?
Ans. 
Strength: Strong problem-solving skills. Weakness: Difficulty delegating tasks.
• Strength: Able to analyze complex problems and come up with effective solutions.

• Weakness: Struggle to trust others to complete tasks to my standards.

• Strength: Excellent attention to detail.

• Weakness: Sometimes too focused on perfection, leading to delays in project completion.

• Strength: Strong communication skills, able to effectively convey i...read more
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Q3. Are you happy to relocate?
Ans. 
Yes, I am happy to relocate for the right opportunity.
• I am open to relocating for career growth and new experiences.

• I have relocated in the past for internships and projects.

• I understand the importance of being flexible and adaptable in the engineering field.
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