Larsen & Toubro Limited Graduate Engineer Trainee (Get) Interview Questions, Process, and Tips

Just Normal aptitude and question from domain

Q1. Give introduction
Ans. 
I am a highly motivated and experienced professional with a strong background in marketing and sales.
• Over 10 years of experience in marketing and sales

• Proven track record of exceeding sales targets

• Strong communication and negotiation skills

• Expertise in developing and implementing marketing strategies

• Proficient in market research and analysis
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Q2. Your hobbies
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My hobbies include reading, hiking, and painting.
• Reading: I enjoy diving into a good book and exploring different genres.

• Hiking: I love spending time outdoors, exploring nature trails and challenging myself physically.

• Painting: I find relaxation and creativity in expressing myself through art.
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130 questions in 120 min

Q1. Introduction and about family
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Q1. Working principle of 3 phase induction motor
Ans. 
3 phase induction motor works on the principle of electromagnetic induction to generate rotating magnetic field.
• Three phase AC current is supplied to stator windings, creating a rotating magnetic field.

• This rotating magnetic field induces current in rotor windings, causing rotor to rotate.

• Speed of rotation is slightly less than synchronous speed due to slip.

• Commonly used in industrial applications for driving pumps, co
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Q2. Types of Circuit breaker
Ans. 
Types of circuit breakers include thermal, magnetic, and hybrid.
• Thermal circuit breakers operate based on the heat generated by excessive current flow.

• Magnetic circuit breakers operate based on the strength of the magnetic field produced by excessive current flow.

• Hybrid circuit breakers combine features of both thermal and magnetic circuit breakers.

• Other types include oil circuit breakers, air circuit breakers, and vac
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Q3. Types of electrical motor .
Ans. 
Types of electrical motors include AC motors (induction, synchronous), DC motors (brushed, brushless), and special types like stepper motors.
• AC motors: induction, synchronous

• DC motors: brushed, brushless

• Special types: stepper motors

• Examples: Induction motor, Synchronous motor, Brushed DC motor, Brushless DC motor, Stepper motor
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Q4. What's rectifier and it's types
Ans. 
A rectifier is an electrical device that converts alternating current (AC) to direct current (DC).
• Rectifiers are used in power supplies and electronic devices to convert AC to DC.

• Types of rectifiers include half-wave, full-wave, and bridge rectifiers.

• Half-wave rectifiers only allow one half of the AC waveform to pass through.

• Full-wave rectifiers allow both halves of the AC waveform to pass through.

• Bridge rectifiers use...read more
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Q5. What is electrical hazards and how to deal with it
Ans. 
Electrical hazards are potential dangers posed by electricity, which can cause harm or injury if not properly managed.
• Identify potential electrical hazards in the workplace

• Implement proper safety measures such as using insulated tools and wearing appropriate personal protective equipment

• Regularly inspect and maintain electrical equipment to prevent malfunctions

• Provide training to employees on how to safely work with el...read more
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Q1. Tell us about yourself and your family.
Ans. 
I come from a close-knit family with diverse backgrounds and interests.
• I have two siblings, an older brother and a younger sister.

• My parents are both doctors, and they have instilled in me a strong work ethic and a passion for helping others.

• We enjoy spending quality time together, whether it's going on family vacations or simply having dinner together every night.

• My family has always been supportive of my goals and as...read more
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Q1. 1. Example of cantilever beam in real world.
Ans. 
A cantilever beam is a structural element that is supported at one end and carries a load at the other end.
• Cantilever bridges, such as the Forth Bridge in Scotland

• Diving boards

• Overhanging balconies

• Shelves attached to a wall

• Flagpoles
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Q2. 2. Types of gear
Ans. 
Types of gear include mechanical, electronic, and digital gear.
• Mechanical gear uses physical components to transmit power or motion, such as gears, pulleys, and belts.

• Electronic gear uses electronic components to control or manipulate signals, such as transistors, diodes, and integrated circuits.

• Digital gear refers to devices that process and transmit digital information, such as computers, smartphones, and digital cam
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Q3. 3. Compare SI engine and CI engine according to their efficiency.
Ans. 
SI engines are more efficient at low loads, while CI engines are more efficient at high loads.
• SI engines (Spark Ignition) use a spark plug to ignite the fuel-air mixture, while CI engines (Compression Ignition) rely on compression to ignite the fuel.

• SI engines are typically used in gasoline-powered vehicles, while CI engines are commonly found in diesel-powered vehicles.

• SI engines have higher thermal efficiency at low ...read more
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Q4. 4. What is entropy and enthalpy
Ans. 
Entropy is a measure of disorder or randomness in a system, while enthalpy is the heat content of a system.
• Entropy is a thermodynamic property that quantifies the degree of randomness or disorder in a system.

• Enthalpy is the total heat content of a system, including both its internal energy and the work done on or by the system.

• Entropy tends to increase in spontaneous processes, leading to a more disordered state.

• Enthal...read more
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Q5. 5. State 1st law of thermodynamics.
Ans. 
The first law of thermodynamics states that energy cannot be created or destroyed, only transferred or converted.
• Energy is conserved in any thermodynamic process.

• It can change forms, such as from heat to work or vice versa.

• The total energy of a closed system remains constant.

• Mathematically expressed as ΔU = Q - W, where ΔU is the change in internal energy, Q is the heat added to the system, and W is the work done by th...read more
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Q1. Topic- "Youth in Politics" Extempore duration 2min.
Ans. 
Youth in Politics
• Youth involvement in politics is crucial for a vibrant democracy

• Young people bring fresh perspectives, innovative ideas, and energy to the political arena

• They can advocate for issues that directly affect their generation, such as climate change or education reform

• Youth participation can help bridge the generational gap and promote intergenerational dialogue

• Examples: The election of Emmanuel Macron as t...read more
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Q1. After aptitude and domain specific test, there was an interview round. In interview, firstly was an extempore round then a technical interview overall lasting around 30mins
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