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Ongc Petro Additions DCS Operations Engineer Interview Questions and Answers

Updated 6 Nov 2024

Ongc Petro Additions DCS Operations Engineer Interview Experiences

1 interview found

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed before Nov 2023. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. What is boiler scaling
  • Ans. 

    Boiler scaling is the accumulation of mineral deposits on the internal surfaces of a boiler.

    • Boiler scaling occurs when minerals in the water, such as calcium and magnesium, precipitate out and form a hard, insulating layer on the boiler's heat transfer surfaces.

    • Scaling reduces heat transfer efficiency, increases energy consumption, and can lead to overheating and equipment failure.

    • Preventative measures include water tr...

  • Answered by AI
  • Q2. What's is corrosion
  • Ans. 

    Corrosion is the process of deterioration of a material, usually a metal, due to chemical reactions with its environment.

    • Corrosion occurs when a metal reacts with substances in its environment, such as oxygen or water.

    • Common types of corrosion include rusting of iron and tarnishing of silver.

    • Corrosion can weaken structures and equipment, leading to potential safety hazards.

    • Preventative measures against corrosion includ

  • Answered by AI

Interview questions from similar companies

Interview experience
4
Good
Difficulty level
Hard
Process Duration
2-4 weeks
Result
Selected Selected

I appeared for an interview before Mar 2024, where I was asked the following questions.

  • Q1. Learning from past companies.
  • Q2. 5 core tools of Quality.
  • Q3. IATF clauses for NPD.

Interview Preparation Tips

Interview preparation tips for other job seekers - Just prepare related to the CV.

I applied via Referral and was interviewed before Jul 2019. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. 1) Tell me about your self . 2) Explain your work experience. 3) project experience.

I applied via Approached by Company and was interviewed before Apr 2021. There were 2 interview rounds.

Round 1 - Aptitude Test 

Engineering reasoning

Round 2 - Technical 

(4 Questions)

  • Q1. Types of chiller, compressor & plastic,
  • Ans. 

    There are different types of chillers, compressors, and plastics used in engineering.

    • Types of chillers include absorption, centrifugal, and screw chillers.

    • Compressors can be classified as reciprocating, rotary, and centrifugal compressors.

    • Plastics used in engineering include polyethylene, polypropylene, and polystyrene.

    • Each type of chiller, compressor, and plastic has its own unique properties and applications.

  • Answered by AI
  • Q2. Pneumatic & hydraulic, valves & actuators
  • Q3. Cooling tower, range, approach
  • Q4. Gear box & its types
  • Ans. 

    Gear box is a mechanical device that transmits power from an engine to the wheels. There are various types of gearboxes.

    • Gearboxes are used in automobiles, industrial machinery, and other applications.

    • The most common types of gearboxes are manual, automatic, and continuously variable transmissions (CVT).

    • Manual gearboxes require the driver to manually shift gears using a clutch and gear stick.

    • Automatic gearboxes shift ge...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Normally general question related to fluid mechanic & fluid power.

I applied via Recruitment Consulltant and was interviewed before Aug 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 tips
Round 2 - Technical 

(2 Questions)

  • Q1. Introduction About production, document, programming, personal things.
  • Q2. About machines, tools, production, rejection ,drawings.
Round 3 - HR 

(1 Question)

  • Q1. Introduction Personal things experience and salary discussion

Interview Preparation Tips

Interview preparation tips for other job seekers - Stay positive and confident. Proper dressing and all study documents to be ready.
Prepare about your likes, dislikes, habits etc.

I applied via Naukri.com and was interviewed in Feb 2022. There were 2 interview rounds.

Round 1 - Aptitude Test 
Round 2 - Technical 

(1 Question)

  • Q1. Types of chiller, refrigerant
  • Ans. 

    There are two types of chillers: air-cooled and water-cooled. Common refrigerants include R-22, R-134a, and R-410A.

    • Air-cooled chillers use air to remove heat from the refrigerant, while water-cooled chillers use water.

    • R-22 is a commonly used refrigerant, but it is being phased out due to its harmful effects on the environment.

    • R-134a is a more environmentally friendly refrigerant, but it is less efficient than R-22.

    • R-41...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Utilities like cooling tower, chillers
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 tips
Round 2 - Technical 

(2 Questions)

  • Q1. Types of heat transfers, what is kettle type reboiler, Iso systems
  • Ans. 

    Heat transfer types include conduction, convection, and radiation. Kettle type reboiler is a type of heat exchanger used in distillation processes. ISO systems are international standards for quality management.

    • Conduction transfers heat through a material without any movement of the material itself

    • Convection transfers heat through the movement of fluids or gases

    • Radiation transfers heat through electromagnetic waves

    • Kett...

  • Answered by AI
  • Q2. Basic concept in fluid dynamics and Heat yransfer
Round 3 - Group Discussion 
Pro Tip by AmbitionBox:
Don’t treat group discussions as an argument. Group discussion is about reaching a meaningful conclusion.
View all tips
Round 4 - Aptitude Test 
Round 5 - Aptitude Test 

Interview Preparation Tips

Interview preparation tips for other job seekers - Confidently speak in interview
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Be truthful in your resume. It is very easy to catch false or lies during the interview by asking basic questions.
View all tips
Round 2 - Aptitude Test 

You have to be good at aptitude

Round 3 - Technical 

(1 Question)

  • Q1. Based on core subjects like Heat Transfer and Mass Transfer
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Referral and was interviewed in Mar 2023. There were 4 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 tips
Round 2 - Assignment 

Pawan kumar sir Quality head

Round 3 - Group Discussion 

Sandeep Singh plant head

Round 4 - One-on-one 

(5 Questions)

  • Q1. Quality engineer
  • Q2. Quality information
  • Q3. Incoming quality
  • Q4. Layout information
  • Q5. Sample information
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 tips
Round 2 - One-on-one 

(3 Questions)

  • Q1. My field technical questions
  • Q2. Education and general knowledge
  • Q3. Education general knowledge

Interview Preparation Tips

Interview preparation tips for other job seekers - Good jop app very helpful and flexible thanks for naukri.com

Ongc Petro Additions Interview FAQs

How many rounds are there in Ongc Petro Additions DCS Operations Engineer interview?
Ongc Petro Additions interview process usually has 1 rounds. The most common rounds in the Ongc Petro Additions interview process are Technical.
What are the top questions asked in Ongc Petro Additions DCS Operations Engineer interview?

Some of the top questions asked at the Ongc Petro Additions DCS Operations Engineer interview -

  1. What is boiler scal...read more
  2. What's is corros...read more

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Ongc Petro Additions DCS Operations Engineer Interview Process

based on 2 interviews

Interview experience

5
  
Excellent
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5.0

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