Larsen & Toubro Limited Interview Questions, Process, and Tips for Experienced

Q1. What is the importance of the level of work on the site
Ans. 
The level of work on the site is crucial for ensuring proper construction, safety, and functionality of the project.
• Ensures proper alignment and elevation of structures

• Affects drainage and water flow on the site

• Impacts the stability and strength of the foundation

• Helps in preventing issues like flooding or erosion

• Critical for meeting design specifications and standards
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Q2. Site par koy kam casting hone se pehle kya kya check Kiya jat hai
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Partly technical and partly logical thinking.

Q1. Regarding Railway engineering works
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RCC,DSMS, STRENGTH OF MATERIAL, SURVEYING, LEVELLING, ESTIMATION

Diploma in mechanical engineering thermal engineering or manufacturing

Q1. Thermodynamics law
Ans. 1st Law of Thermodynamics - Energy cannot be created or destroyed. 2nd Law of Thermodynamics - For a spontaneous process, the entropy of the universe increases. 3rd Law of Thermodynamics - A perfect crystal at zero Kelvin has zero entropy.
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Q2. Gear and type four stock and two stock
Ans. The main difference between a 4-stroke engine and a 2-stroke engine is that a 4-stroke engine goes through four stages, or two complete revolutions, to complete one power stroke, while a 2-stroke engine goes through 2 stages, or one complete revolution, to complete one power stroke.
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Q3. Stress and strain or strain and stress graph
Ans. The Stress-Strain curve is a type of graph plotted between “stress and strain”. This graph explains the relationship between “stress and strain” of different materials when tensile stress is applied to them. This curve is plotted on the basis of an experimental result.
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Q4. Types of mechanical properties
Ans. 
Mechanical properties refer to the behavior of materials under applied forces.
• Strength - ability to withstand applied stress without failure

• Hardness - resistance to deformation or scratching

• Elasticity - ability to return to original shape after deformation

• Ductility - ability to deform without breaking

• Toughness - ability to absorb energy before fracturing
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Q5. Types of heat treatment
Ans. 
Heat treatment is a process used to alter the physical and sometimes chemical properties of a material through heating and cooling.
• Annealing: heating a material to a specific temperature and then slowly cooling it to relieve internal stresses and increase ductility

• Quenching: rapid cooling of a material to increase hardness

• Tempering: heating a material to a specific temperature and then cooling it to improve toughness

• No...read more
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Q6. Heat transfer and types
Ans. 
Heat transfer is the movement of heat from one object to another due to a temperature difference.
• There are three main types of heat transfer: conduction, convection, and radiation.

• Conduction is the transfer of heat through a material without any movement of the material itself.

• An example of conduction is when a metal spoon in a hot cup of tea becomes hot.

• Convection is the transfer of heat through the movement of fluids...read more
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Q7. Types of lathe machine
Ans. 
Types of lathe machines include engine lathe, turret lathe, and center lathe.
• Engine lathe is the most common type used for general purpose turning.

• Turret lathe has a turret tool post for quick tool changes.

• Center lathe is used for precision work and has a tailstock for support.

• Other types include automatic lathe, CNC lathe, and vertical lathe.
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