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Bharat Oman Refineries Diploma Trainee Engineer Interview Questions and Answers

Updated 21 Jan 2023

Bharat Oman Refineries Diploma Trainee Engineer Interview Experiences

1 interview found

Diploma Trainee Engineer Interview Questions & Answers

user image anil kumar jayswal

posted on 21 Jan 2023

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed in Jul 2022. There were 3 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Properly align and format text in your resume. A recruiter will have to spend more time reading poorly aligned text, leading to high chances of rejection.
View all Resume tips
Round 2 - Technical 

(1 Question)

  • Q1. Basic mechanical Engineering questions like about Pump, compressor and theory questions from Fluid mechanics like Bernoulli Principles.
Round 3 - HR 

(1 Question)

  • Q1. About your self, why do you want to join like that

Interview Preparation Tips

Interview preparation tips for other job seekers - prepare only basic questions with appropriate example

Interview questions from similar companies

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Company Website and was interviewed in Jan 2024. There were 3 interview rounds.

Round 1 - Group Discussion 

My GD topic was renewable energy.

Round 2 - HR 

(7 Questions)

  • Q1. Tell me about yourself
  • Ans. 

    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++

  • Answered by AI
  • Q2. Why do you want to leave your previous company and join GAIL
  • Ans. 

    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

  • Answered by AI
  • Q3. What do your parents do
  • Ans. 

    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

  • Answered by AI
  • Q4. Have you ever visited Delhi earlier
  • Ans. 

    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

  • Answered by AI
  • Q5. How did you reach Noida for interview
  • Q6. Where are you staying in Noida for interview process
  • Ans. 

    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

  • Answered by AI
  • Q7. Related family background
Round 3 - Technical 

(7 Questions)

  • Q1. Detailed technical questions about bearing, pump, furnace tubes (1st and 2nd pass)MOC, TLE MOC, heat exchanger tube MOC, TEMA codes and classification etc.
  • Q2. Decoking process of cracking furnace, Naphtha circuit of furnace with sketches,
  • Ans. 

    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

  • Answered by AI
  • Q3. Detailed refrigeration cycles
  • Ans. 

    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...

  • Answered by AI
  • Q4. Safety related questions which I couldn't answer well
  • Q5. Safety procedures before starting of hot job
  • Ans. 

    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

  • Answered by AI
  • Q6. Furnace tubes Welding related questions
  • Q7. Scaffolding and insulation related general questions (easy)

Interview Preparation Tips

Interview preparation tips for other job seekers - Be prepared for GD and just keep enough technical knowledge on your field of experience. Be relaxed and give interview with happy face..don't be depressed if you couldn't answer any question during interview. If you don't know anything just say "I don't know" ...keep the things simple and give honest answer always.

I applied via Company Website and was interviewed before Sep 2021. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - Technical 

(2 Questions)

  • Q1. How will you identify if a pump is cavitating while working on a DCS panel?
  • Ans. 

    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...

  • Answered by AI
  • Q2. How would you prepare a hydrocarbon vessel for vessel entry?
  • Ans. 

    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...

  • Answered by AI

Interview Preparation Tips

Topics to prepare for GAIL Senior Engineer interview:
  • Chemical Engineering
  • DCS Operations
Interview preparation tips for other job seekers - Try to answer the questions asked in simple words. The interviewer generally wants to judge an interviewee based on his understanding of the subject. When an applicant is appearing for an interview, he should share his experience and try to quote examples from his experience.

Interview Questionnaire 

1 Question

  • Q1. What is name mangling?
  • Ans. 

    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

  • Answered by AI

Skills evaluated in this interview

I applied via Campus Placement and was interviewed before Apr 2020. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. About the basics of c, c++ and java, also asked to explain the project that I developed.

Interview Preparation Tips

Interview preparation tips for other job seekers - Be bold and transparent. Explain your reasons and issues if any they are under standable.

I applied via Job Fair and was interviewed before May 2021. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - HR 

(1 Question)

  • Q1. What is your job role

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confident and strive hard to achieve what you desire

I applied via Approached by Company and was interviewed before Dec 2021. There were 3 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - Technical 

(1 Question)

  • Q1. What is n-tier architecture
  • Ans. 

    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.

  • Answered by AI
Round 3 - HR 

(1 Question)

  • Q1. What is your expectation from company

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confident while answering the questions and answers

Interview Questionnaire 

3 Questions

  • Q1. About skilla
  • Q2. Project
  • Q3. Roles in

Interview Questionnaire 

6 Questions

  • Q1. Explain abstract factory design pattern ?
  • Ans. 

    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...

  • Answered by AI
  • Q2. How do you do range based map iteration
  • Ans. 

    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 }

  • Answered by AI
  • Q3. What are detached and joined threads
  • Ans. 

    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...

  • Answered by AI
  • Q4. What are static code analysis tools
  • Ans. 

    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

  • Answered by AI
  • Q5. Command to list currently running threads in linux
  • Ans. 

    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

  • Answered by AI
  • Q6. Can we perform arithmetic operation on Unique pointer
  • Ans. 

    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.

  • Answered by AI

Skills evaluated in this interview

Interview Questionnaire 

1 Question

  • Q1. Design facebook
  • Ans. 

    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...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Database, logical reasoning

Skills evaluated in this interview

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Bharat Oman Refineries Interview FAQs

How many rounds are there in Bharat Oman Refineries Diploma Trainee Engineer interview?
Bharat Oman Refineries interview process usually has 3 rounds. The most common rounds in the Bharat Oman Refineries interview process are Resume Shortlist, Technical and HR.

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Bharat Oman Refineries Diploma Trainee Engineer Interview Process

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Bharat Oman Refineries Diploma Trainee Engineer Salary
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₹1.8 L/yr - ₹3 L/yr
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