Larsen & Toubro
Larsen & Toubro is a major engineering and construction company with opportunities for Electrical Engineering graduates.
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Company context
Larsen & Toubro (L&T) is a leading engineering and construction company in India, known for its involvement in various sectors such as infrastructure, power, and heavy engineering. Electrical Engineering graduates may find opportunities in L&T's power transmission and distribution projects, electrical systems design, and automation solutions. The company is also involved in renewable energy projects, which can be a significant area of interest for graduates.
Selection preparation
Check the specific role’s official posting and recruiter instructions for eligibility and selection stages. Technical discussion, project explanation, aptitude and behavioral practice may be useful, but this guide does not verify a fixed sequence of company interview rounds.
What to revise
- Electric Circuits (whole subject)
- Electromagnetic Fields (whole subject)
- Signals & Systems (whole subject)
- Electrical Machines (whole subject)
- Power Systems (whole subject)
- Control Systems (whole subject)
- Measurements (whole subject)
- Analog & Digital Electronics (whole subject)
- Power Electronics (whole subject)
Original practice questions
These are preparation examples, not questions attributed to this employer.
Explain the working principle of a transformer. A transformer operates on the principle of electromagnetic induction and is used to change the voltage levels in an AC circuit. It consists of primary and secondary windings, and the voltage transformation depends on the turns ratio between these windings.
What is the difference between a synchronous and an asynchronous motor? A synchronous motor rotates at a speed that is synchronized with the frequency of the supply current, while an asynchronous motor (induction motor) runs at a speed less than the synchronous speed due to slip.
How do you calculate the efficiency of a power system? The efficiency of a power system is calculated by dividing the output power by the input power and multiplying by 100 to express it as a percentage. It indicates how effectively the system converts input energy into useful output energy.
What are the advantages of using a three-phase power system over a single-phase system? A three-phase power system is more efficient for power transmission, provides constant total instantaneous power for a balanced sinusoidal load, and allows for smaller and lighter wiring compared to a single-phase system. It is commonly used in industrial and commercial applications.
Describe the function of a circuit breaker. A circuit breaker is a protective device that automatically interrupts the flow of current in an electrical circuit when it detects an overload or short circuit, preventing damage to the system and ensuring safety.
What is power factor, and why is it important? Power factor is the ratio of real power to apparent power in an AC circuit. It is important because a higher power factor indicates more efficient utilization of electrical power, reducing current and associated conductor losses for the same active power and voltage; power factor is not efficiency and does not alone establish stability.
Before the interview
- Review your academic projects and be prepared to discuss them in detail.
- Highlight any internships or practical experiences related to Electrical Engineering.
- Research Larsen & Toubro's recent projects, especially in the power and infrastructure sectors.
- Understand the company's core values and culture to align your responses during the HR interview.
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