L&T Construction Senior Engineer Interview Questions, Process, and Tips

Q1. Introduce yourself
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Q2. Job responsibilities of current organisation
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Q1. Introduce yourself
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Q2. Why you want to leave your current organisation
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Q1. They are Asked General question about Yourself and Company and why you want to switch.
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Q2. Schedule Interview for Technical round
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Q1. Tell me About Yourself
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Q2. Your Current job role and how to plan to work ,how much productivity of labour , Some IS code . Slab Cycle
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Q3. Why you change your current job
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Q1. Documents submission
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Q2. Salary negotiation
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Q3. Offer package and gove Joining Letter.
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Q4. Medical examine applicable after result if you fit then you resigned from your current company and join as per discussion time .
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Q1. Why Rotation equipment will get sound and vibration.
Ans. 
Rotation equipment can develop sound and vibration due to various reasons such as imbalance, misalignment, wear and tear, or bearing issues.
• Imbalance in rotating parts can cause vibration and noise. For example, a misaligned shaft or uneven distribution of mass.

• Misalignment of components can lead to vibration and noise. For instance, if a motor shaft is not properly aligned with the pump shaft.

• Wear and tear in bearings...read more
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Q2. What is meant breathers and purpose.
Ans. 
Breathers are devices used to prevent the build-up of pressure or vacuum within a sealed container or system.
• Breathers allow for the exchange of air to prevent pressure differentials.

• They are commonly used in hydraulic systems to prevent contamination.

• Breathers can also be used in storage tanks to prevent the formation of a vacuum.

• The purpose of breathers is to maintain optimal operating conditions within a system.
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Q3. What is purposes of Inter cooler in Air line.
Ans. 
Inter cooler in an air line is used to cool down the compressed air before it enters the engine, increasing its density and efficiency.
• Increases air density for better combustion efficiency

• Reduces the risk of engine knocking or detonation

• Improves overall engine performance and power output
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Q4. What is Periodical Maintenance
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Periodical maintenance refers to regular scheduled maintenance tasks performed on equipment or systems to ensure optimal performance and prevent breakdowns.
• Periodical maintenance involves routine inspections, cleaning, lubrication, and adjustments.

• It helps to identify and address potential issues before they become major problems.

• Examples include changing the oil in a car every 5,000 miles, inspecting HVAC systems quar
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Q5. What is Check list
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A checklist is a list of items or tasks that need to be completed or verified.
• Used to ensure all necessary tasks are completed

• Can be used in various fields such as project management, quality control, and safety inspections

• Examples: pre-flight checklist for pilots, grocery shopping list, daily to-do list
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Q6. What is A,B,C&D Service.
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A,B,C&D Service refers to different levels of maintenance services provided for equipment or machinery.
• A Service: Regular maintenance to prevent breakdowns

• B Service: Intermediate level maintenance to address minor issues

• C Service: Major maintenance to address significant issues

• D Service: Overhaul or complete refurbishment of the equipment

• Example: A car manufacturer may offer A, B, C, and D services for their vehicles
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Q7. What is Tail light,high intensity light Radium Stickers.
Ans. 
Tail light, high intensity light Radium Stickers are reflective stickers used on vehicles to enhance visibility and safety.
• Tail light Radium Stickers are placed on the rear of vehicles to make them more visible in low light conditions.

• High intensity light Radium Stickers are used on bicycles, helmets, and other objects to increase visibility to others.

• These stickers contain radium material that reflects light, making t...read more
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Q8. What is the difference of RR,BD &LBD
Ans. 
RR stands for Relative Risk, BD stands for Base Diameter, and LBD stands for Largest Base Diameter.
• RR is a measure of the risk of an event happening in one group compared to another group.

• BD refers to the diameter of the base of a structure or object.

• LBD is specifically referring to the largest diameter of the base of a structure or object.

• Example: RR can be used in epidemiology to compare the risk of developing a dise...read more
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Q9. What is PTO in In Power and Documents.
Ans. 
PTO in In Power and Documents stands for Power Take Off, a mechanism used to transfer power from a vehicle's engine to another application.
• PTO is commonly used in trucks and other heavy-duty vehicles to power auxiliary equipment such as hydraulic pumps or generators.

• In In Power and Documents, PTO may refer to the specific settings or configurations related to power take off systems in vehicles.

• Understanding PTO in In P...read more
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Q10. What is LCV and HDD Vehicles
Ans. 
LCV stands for Light Commercial Vehicles and HDD stands for Heavy Duty Vehicles.
• LCV vehicles are designed for transporting goods or passengers with a gross vehicle weight of up to 3.5 tons.

• Examples of LCV vehicles include vans, pickup trucks, and small buses.

• HDD vehicles are designed for heavy-duty tasks such as construction, mining, or transportation of heavy loads.

• Examples of HDD vehicles include dump trucks, tractor
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Q11. What is showing "W" in 15W/40 Oil
Ans. 
The 'W' in 15W/40 oil stands for winter, indicating the oil's viscosity in cold temperatures.
• The 'W' stands for 'winter' in multi-grade oils, indicating the oil's viscosity in cold temperatures

• The number before the 'W' (15 in this case) represents the oil's viscosity at low temperatures

• The number after the 'W' (40 in this case) represents the oil's viscosity at high temperatures
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Q12. If Bolt Thired is 20 mm . What will be Size of bolt head size in mm
Ans. 
The size of the bolt head will typically be larger than the bolt thread size.
• The size of the bolt head is usually larger than the bolt thread size for proper grip and torque application.

• Common sizes for bolt heads include 22mm, 24mm, 27mm, etc.

• The size of the bolt head is determined based on the application and required torque specifications.
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Q13. In Ball bearing Number is 6405. What is inserting Shaft size in mm.
Ans. 
The inserting shaft size for a ball bearing number 6405 is typically 25 mm.
• The inserting shaft size for ball bearing 6405 is usually 25 mm.

• The shaft size can vary depending on the specific design and application.

• It is important to ensure the correct shaft size is used to prevent damage to the bearing.
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General Aptitude topics

Q1. Pure technical consists of IS codes and basic knowledge on favourite subjects as you choose
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Q2. Questions from Concrete technology, IS 456, IS 800 etc..,
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