Larsen & Toubro

Engineering work

Larsen & Toubro (L&T) is a leading conglomerate in engineering, construction, manufacturing, and technology services. Mechanical Engineering graduates may find opportunities in L&T's various sectors, including heavy engineering, construction, and manufacturing. The company is known for its work in infrastructure development, power, and industrial projects, which often require expertise in mechanical systems and processes.

Selection preparation

Recruitment stages depend on the advertised role and hiring channel. Prepare for possible aptitude or technical assessments, project discussions and interviews, but use the official vacancy or campus notice for the actual sequence and eligibility.

What to revise

• Engineering Mechanics › Introduction to Engineering Mechanics
• Engineering Mechanics › Statics of Particles
• Engineering Mechanics › Equilibrium of Rigid Bodies
• Engineering Mechanics › Centroid and Center of Gravity
• Engineering Mechanics › Analysis of Structures
• Engineering Mechanics (whole subject)
• Strength of Materials (whole subject)
• Theory of Machines (whole subject)
• Machine Design (whole subject)
• Fluid Mechanics (whole subject)
• Heat Transfer (whole subject)
• Thermodynamics (whole subject)
• Manufacturing & Materials (whole subject)
• Industrial Engineering (whole subject)

Practice questions

These are preparation questions, not claims about questions asked by this company.

1. Explain the difference between laminar and turbulent flow. Laminar flow is characterized by smooth, parallel layers of fluid, while turbulent flow involves chaotic and irregular fluid motion. The Reynolds number is used to predict the flow regime.

2. What is the significance of the stress-strain curve in material science? The stress-strain curve provides insights into a material's mechanical properties, such as elasticity, yield strength, and ultimate tensile strength. It helps engineers understand how materials will behave under different loads.

3. How do you determine the centroid of a composite area? The centroid of a composite area can be determined by dividing the area into simpler shapes, calculating the centroid of each shape, and then using the principle of moments to find the overall centroid.

4. What are the first and second laws of thermodynamics? The first law of thermodynamics states that energy cannot be created or destroyed, only transformed. The second law states that entropy cannot decrease in an isolated system; it is constant in a reversible process and increases in an irreversible one.

5. Describe the working principle of a four-stroke engine. A four-stroke engine operates through four stages: intake, compression, power, and exhaust. Each stroke corresponds to a movement of the piston, converting fuel into mechanical energy.

6. What is the purpose of a flywheel in machinery? A flywheel stores rotational energy and helps maintain a consistent speed in machinery by smoothing out fluctuations in engine power.

7. How do you perform a failure analysis on a mechanical component? Failure analysis involves examining the failed component, identifying the failure mode, and determining the root cause through methods like visual inspection, material testing, and stress analysis.

8. What is the role of a heat exchanger in a thermal system? A heat exchanger transfers heat between fluids; surface exchangers separate the streams, while direct-contact exchangers allow contact or mixing, improving energy efficiency in systems like HVAC, power plants, and refrigeration.

Before the interview

• Review your academic projects and be prepared to discuss your role and the outcomes.
• Reflect on any internships or practical experiences, focusing on what you learned and how it applies to the role.
• Research Larsen & Toubro's recent projects, values, and any news related to their mechanical engineering work.
• Prepare questions to ask the interviewer about the company culture and growth opportunities.

Company reference: L&T Heavy Engineering overview.