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I applied via Campus Placement and was interviewed in Jul 2022. There were 3 interview rounds.
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I applied via Company Website and was interviewed in Jan 2024. There were 3 interview rounds.
My GD topic was renewable energy.
I am a Senior Engineer with 10+ years of experience in designing and implementing complex systems.
10+ years of experience in engineering
Specialize in designing and implementing complex systems
Strong problem-solving skills
Experience with various programming languages such as Java, Python, and C++
Seeking new challenges and growth opportunities at GAIL.
Desire for new challenges and opportunities for growth
Interested in working in a different industry or with different technologies
Attracted to GAIL's reputation and projects
Seeking a more collaborative and innovative work environment
My parents are both retired now, but my father used to work as a civil engineer and my mother was a teacher.
Father worked as a civil engineer
Mother was a teacher
Both are retired now
Yes, I have visited Delhi earlier for a business trip.
Visited Delhi for a business trip
Explored historical sites like Red Fort and Qutub Minar
Enjoyed local cuisine like butter chicken and chaat
I am staying at a hotel in Sector 18, Noida for the interview process.
Staying at a hotel in Sector 18, Noida
Close to the interview location
Comfortable accommodation for the duration of the process
Decoking process involves removing coke deposits from cracking furnace and naphtha circuit to maintain efficiency.
Decoking process involves burning off coke deposits using controlled combustion.
Mechanical decoking involves using high-pressure water jets to remove coke deposits.
Chemical decoking involves using solvents or acids to dissolve coke deposits.
Regular decoking is essential to prevent blockages and maintain fur
Refrigeration cycles are thermodynamic processes used in refrigerators and air conditioners to transfer heat from a low temperature reservoir to a high temperature reservoir.
Refrigeration cycles typically involve four main components: compressor, condenser, expansion valve, and evaporator.
The refrigerant undergoes a cycle of compression, condensation, expansion, and evaporation to absorb heat from the space being coole...
Safety procedures before starting a hot job include obtaining a hot work permit, conducting a hazard assessment, ensuring proper ventilation, and having fire extinguishing equipment nearby.
Obtain a hot work permit before starting any hot job
Conduct a hazard assessment to identify potential risks
Ensure proper ventilation in the work area to prevent buildup of flammable gases
Have fire extinguishing equipment nearby and r
I applied via Company Website and was interviewed before Sep 2021. There were 2 interview rounds.
To identify if a pump is cavitating while working on a DCS panel, you can look for certain indicators.
Monitor the pump's suction pressure. If it is fluctuating or dropping below the specified range, it may indicate cavitation.
Check the pump's discharge pressure. If it is higher than normal, it could be a sign of cavitation.
Listen for unusual noises such as a rattling or grinding sound coming from the pump.
Inspect the p...
To prepare a hydrocarbon vessel for vessel entry, follow these steps:
Ensure the vessel is properly isolated from the process and all sources of energy
Ventilate the vessel to remove any flammable or toxic gases
Perform a thorough inspection of the vessel for any signs of leaks or damage
Implement proper lockout/tagout procedures to prevent accidental activation of equipment
Provide appropriate personal protective equipment...
Name mangling is a technique used by compilers to give unique names to functions and variables to avoid naming conflicts.
Name mangling is used in C++ to support function overloading.
It is also used in Python to avoid naming conflicts in modules.
Name mangling can make it difficult to access variables and functions from outside the class in which they are defined.
In C++, name mangling can be seen by using the 'nm' comman
I applied via Campus Placement and was interviewed before Apr 2020. There were 3 interview rounds.
I applied via Job Fair and was interviewed before May 2021. There were 2 interview rounds.
I applied via Approached by Company and was interviewed before Dec 2021. There were 3 interview rounds.
n-tier architecture is a software design pattern that divides an application into logical layers.
It separates presentation, application processing, and data management functions.
Each layer can be developed and maintained independently.
Examples include 3-tier and 4-tier architectures.
It improves scalability, maintainability, and flexibility of the application.
Abstract Factory is a creational design pattern that provides an interface for creating families of related objects.
Abstract Factory is used when we need to create families of related objects without specifying their concrete classes.
It provides an interface for creating objects of related classes without specifying their concrete classes.
It encapsulates a group of factories that have a common theme.
It promotes loose c...
Range based map iteration can be done using a for-each loop or iterators.
Use a for-each loop to iterate over the map elements.
Alternatively, use iterators to traverse the map.
The range-based for loop is preferred for its simplicity and readability.
Example: for(auto const& [key, value] : myMap) { //do something with key and value }
Detached threads are independent threads that run separately from the main thread. Joined threads are threads that wait for the main thread to finish.
Detached threads are created using pthread_detach() function
Joined threads are created using pthread_join() function
Detached threads do not need to be explicitly terminated
Joined threads must be explicitly terminated using pthread_exit() or return statement
Detached thread...
Static code analysis tools are software programs that analyze source code to find potential issues and improve code quality.
Static code analysis tools scan code without executing it
They can detect issues such as security vulnerabilities, coding errors, and performance problems
Examples of static code analysis tools include SonarQube, ESLint, and Checkstyle
Command to list currently running threads in linux
Use the 'ps' command with the 'H' option to display threads in a hierarchy
Use the 'top' command to display threads in real-time
Use the 'htop' command for an interactive display of threads
No, arithmetic operations cannot be performed on unique pointers.
Unique pointers are used to manage the lifetime of dynamically allocated objects.
They cannot be copied or assigned, only moved.
Arithmetic operations are not defined for pointers, including unique pointers.
Designing Facebook is a complex task involving various components and technologies.
Identify the core features of Facebook such as user profiles, news feed, messaging, and groups.
Choose appropriate technologies for each component such as PHP for backend, React for frontend, and MySQL for database.
Ensure scalability and performance by implementing caching, load balancing, and database sharding.
Implement security measures...
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