L&T Construction Interview Questions, Process, and Tips

Medium range tough questions were asked

Q1. What is HIRA and types of fires
Ans. 
HIRA stands for Hazard Identification and Risk Assessment. There are four types of fires: Class A, B, C, and D.
• HIRA is a process of identifying potential hazards and assessing the risks associated with them.

• It involves identifying the hazards, evaluating the risks, and implementing control measures to mitigate the risks.

• Class A fires involve ordinary combustibles like wood, paper, and cloth.

• Class B fires involve flamma...read more
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Q2. Different types of acts used in safety
Ans. 
Acts used in safety include preventive, corrective, detective, and compensatory measures.
• Preventive measures aim to avoid accidents or incidents from happening, such as safety training, equipment maintenance, and hazard identification.

• Corrective measures are taken after an accident or incident has occurred, such as first aid, repairs, and investigations.

• Detective measures involve monitoring and identifying potential ha...read more
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Q1. Design mix concrete and nominal mix difference
Ans. 
Design mix concrete is a mix of concrete prepared by a designer as per the required strength and durability, while nominal mix concrete is a mix of concrete prepared based on standard ratios without specific design requirements.
• Design mix concrete is prepared by a designer based on specific requirements for strength and durability.

• Nominal mix concrete is prepared based on standard ratios like 1:2:4 without specific des...read more
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Q2. What is knee bracing
Ans. 
Knee bracing is a structural support used in construction to prevent lateral movement of beams or columns.
• Knee bracing is a diagonal member used to connect a vertical member to a horizontal member in a structure.

• It helps to resist lateral forces and prevent buckling or swaying of the structure.

• Knee bracing is commonly used in steel frame construction to provide stability and support.

• Examples include diagonal braces con
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Q3. Portal frame questions
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Q1. EXPLAIN POWER SYSTEM PROTECTION
Ans. 
Power system protection is a set of measures taken to ensure the safety and reliability of electrical power systems.
• Power system protection involves detecting and isolating faults in the power system to prevent damage to equipment and ensure continuity of power supply.

• Protection devices such as relays, fuses, and circuit breakers are used to detect and isolate faults.

• Relays are used to detect abnormal conditions in the...read more
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Q2. Explain Bucholz Relay
Ans. 
Bucholz Relay is a protective device used in oil-immersed transformers to detect and prevent faults.
• It is installed between the transformer tank and conservator tank.

• It detects faults such as internal short circuits and incipient faults.

• It operates on the principle of gas evolution due to the decomposition of oil.

• It sends a signal to the transformer protection system to isolate the transformer from the power system.

• It ...read more
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Q3. Explain Mho Realy and Explain generators operation in parallel.
Ans. 
Mho relay is a type of distance relay used for fault detection in power systems. Generators operate in parallel to increase power output.
• Mho relay is a directional relay that operates based on the impedance seen by the relay during a fault.

• Generators in parallel must have the same voltage, frequency, and phase sequence to avoid damaging the system.

• Parallel operation of generators requires synchronization and load shari...read more
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Q1. Railway formation ,Field drain and structural
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Q2. Privious company job detail
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Q1. What is meaning in survey?
Ans. 
Meaning in survey refers to the interpretation of data collected through surveying techniques.
• Meaning in survey involves analyzing and interpreting data collected through surveying techniques.

• It helps in understanding the characteristics of a particular area or site.

• Survey meaning can vary depending on the type of survey conducted, such as land survey, topographical survey, or construction survey.

• For example, in a land...read more
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Q2. How many type of survey?
Ans. 
There are several types of surveys used in construction engineering.
• Topographic survey

• Boundary survey

• Construction survey

• As-built survey

• ALTA/ACSM survey

• Hydrographic survey

• Geodetic survey
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Q1. What is meaning in technical?
Ans. 
In technical, meaning refers to the precise definition or interpretation of a term or concept.
• Technical meaning is often specific to a particular field or industry.

• It is important to understand technical meanings in order to communicate effectively within that field.

• For example, in construction engineering, technical terms like 'load-bearing capacity' and 'structural integrity' have specific meanings that differ from t...read more
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Q2. How many type of Technical problem?
Ans. 
There are various types of technical problems that can arise in construction engineering.
• Design problems

• Material problems

• Equipment problems

• Environmental problems

• Labor problems

• Safety problems

• Budget problems

• Schedule problems
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Online proctored test for 1.5 hour duration. It contained both aptitude and technical part.

Q1. Self-introduction
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Q2. Brief about the major project.
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Q3. Follow up technical questions on the project.
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