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Chennai Petroleum Corporation Interview Questions, Process, and Tips for Freshers

Updated 5 Apr 2025

Top Chennai Petroleum Corporation Interview Questions and Answers for Freshers

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Chennai Petroleum Corporation Interview Experiences for Freshers

Popular Designations

7 interviews found

Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
-

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

  • Q1. What is mean by ferranti effect ?
  • Q2. What is mean by skin effect?
  • Q3. What is transformer?
  • Q4. What are the types of dc motors?
  • Q5. What are the parts of transformer?

Graduate Apprenticeship Trainee Interview Questions asked at other Companies

Q1.Ā What is required to increase the flow rate in a centrifugal pump?
View answer (1)

Trainee Interview Questions & Answers

user image Anonymous

posted on 11 Feb 2024

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

I applied via Campus Placement and was interviewed before Feb 2023.Ā There were 3 interview rounds.

Round 1 - Aptitude TestĀ 

Basic Aptitude Sections, Mostly from GATE Syllabus

Round 2 - One-on-oneĀ 

(1 Question)

  • Q1. Technical Interview related to Chemical, Basically from Chemical Reaction Eng, Mass Transfer Operatio [Distillation] , Heat Transfer [Conduction Part, Convection and Radiation] Thermodynamics and Fluid Mec...
Round 3 - Group DiscussionĀ 

Topic on related to different aspects of Petroleum

Interview Preparation Tips

Interview preparation tips for other job seekers - Focus on Technical Knowledge

Trainee Interview Questions asked at other Companies

Q1.Ā Ques1: There is a big file of words which is dynamically changing. We are continuously adding some words into it. How would you keep track of top 10 trending words at each moment? Ques2:Write a function that returns the length of the longes... read more
View answer (2)

I applied via Company Website and was interviewed in Apr 2022.Ā There was 1 interview round.

Round 1 - CgpaĀ 

(2 Questions)

  • Q1. Basics of fluid mechanics, thermodynamics
  • Q2. Badics of chemical engineering and process
  • Ans. 

    Chemical engineering involves the design, development, and operation of chemical processes and equipment.

    • Chemical engineering applies principles of chemistry, physics, and mathematics to solve problems related to the production and use of chemicals and materials.

    • Process design involves selecting the appropriate equipment, materials, and operating conditions to achieve the desired product quality and quantity.

    • Chemical e...

  • Answered by AI

Interview Preparation Tips

Topics to prepare for Chennai Petroleum Corporation Graduate Apprentice Trainee interview:
  • Process Engineering
Interview preparation tips for other job seekers - Cpcl is one of the best place for beginners. Every employee in this industry was kind to fresher. We can learn more with our effort. Best place for fresher. I'm too fresher I can realise that day by day increasing my knowledge.

Graduate Apprentice Trainee Interview Questions asked at other Companies

Q1.Ā How engine works? Explain the function of flywheel? What if we use a flywheel of smaller size?
View answer (1)
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Newspaper Ad and was interviewed before Jan 2022.Ā There were 2 interview rounds.

Round 1 - Aptitude TestĀ 

30 question from Numerical Aptitude, 10 from english language, 10 GK, 10 reasoning, 60 from branch subject and safety. With negative marking ok 25%.

Round 2 - TechnicalĀ 

(6 Questions)

  • Q1. Where are you working
  • Ans. I am working in urea plant, chambal fertilizer chemicals ltd, kota
  • Answered by O210 089_Vinod Kumar Varma[PT]
  • Q2. Which process used to manufacture urea?
  • Ans. 

    Urea is manufactured through the Haber-Bosch process.

    • The Haber-Bosch process is a chemical reaction that combines nitrogen and hydrogen to produce ammonia.

    • The ammonia is then reacted with carbon dioxide to form urea.

    • The process involves high pressure and temperature conditions.

    • The reaction is catalyzed by iron-based catalysts.

    • The urea produced is used as a fertilizer and in the production of plastics, resins, and adhes

  • Answered by AI
  • Q3. How you get prilled urea?
  • Ans. 

    Prilled urea is obtained through a process called prilling, which involves the formation of small spherical pellets.

    • Prilling is a method used to produce solid spherical particles.

    • Urea is melted and then sprayed into a tower where it solidifies into small pellets.

    • The pellets are then cooled and collected as prilled urea.

    • Prilled urea is commonly used as a fertilizer due to its ease of handling and high nitrogen content.

  • Answered by AI
  • Q4. Show the block diagram of urea plant.
  • Ans. 

    The block diagram of a urea plant includes several stages such as synthesis, stripping, and granulation.

    • The synthesis stage involves the reaction of ammonia and carbon dioxide to form ammonium carbamate, which is then dehydrated to form urea.

    • The stripping stage involves the removal of excess ammonia and carbon dioxide from the urea solution.

    • The granulation stage involves the formation of solid urea granules through a p...

  • Answered by AI
  • Q5. I make the block diagram
  • Q6. Which subject you prefer to discuss from chemical engg
  • Ans. 

    I prefer to discuss topics related to process control in chemical engineering.

    • Process control: I find the principles and techniques of process control fascinating.

    • Control systems: I enjoy discussing the design and optimization of control systems in chemical processes.

    • Instrumentation: I am interested in the various instruments used in chemical engineering and their applications.

    • Automation: I find the automation of chemi...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Don't hasitate and give short ans for question asked. If don't know tell clearly.

Engineering Assistant Interview Questions asked at other Companies

Q1.Ā The work hours period is susceptible to person and in supervision of regulatory authority why? Explain ..
View answer (1)

Chennai Petroleum Corporation interview questions for popular designations

Ā Technician

Ā (2)

Ā Assistant Engineer

Ā (1)

Ā Draughtsman Mechanical

Ā (1)

Ā Safety Officer

Ā (1)

Ā Chemical Engineer

Ā (1)

Ā Graduate Apprentice Trainee

Ā (1)

Ā Engineering Assistant

Ā (1)

Ā Mechanical Supervisor

Ā (1)

Interview Questions & Answers

user image otismil

posted on 23 Mar 2022

I applied via NATS and was interviewed in Sep 2021.Ā There was 1 interview round.

Round 1 - HRĀ 

(1 Question)

  • Q1. Tell me about yourself.

Interview Preparation Tips

Topics to prepare for Chennai Petroleum Corporation interview:
  • Basic knowledge about where you going
Interview preparation tips for other job seekers - I am Not an permanent employee in CPCL. I have been selected as Graduate Engineering apprentice Training From March 2022 to march 2023. I have applied it in NATS with the help of it I have been selected by certificate verification and by Academic Grade.
I hope this will help your thoughts.

Mechanical Supervisor Interview Questions & Answers

user image Vijayan Damodharan

posted on 18 Jan 2020

Interview QuestionnaireĀ 

6 Questions

  • Q1. The steam turbines rotor it's running time which bearing take load ?
  • Ans. 

    The steam turbines rotor puts load on the thrust bearing.

    • The steam turbines rotor puts load on the thrust bearing.

    • The thrust bearing is designed to handle the axial load generated by the rotor.

    • Other bearings in the steam turbine, such as journal bearings, handle radial loads.

    • The thrust bearing is typically located at the non-drive end of the rotor.

    • Examples of thrust bearings used in steam turbines include tilting pad b

  • Answered by AI
  • Q2. Why need lube oil number cod ?
  • Ans. 

    Lube oil number cod is needed to identify the type of lubricant used in machinery.

    • Lube oil number cod helps in identifying the viscosity of the lubricant.

    • It also helps in determining the type of base oil used in the lubricant.

    • Different machinery requires different types of lubricants with specific viscosity and base oil.

    • Lube oil number cod helps in ensuring the correct lubricant is used for the machinery.

    • For example, a...

  • Answered by AI
  • Q3. Yes we need identify lube oi density velocity
  • Q4. What is the meaning TDC ? BDC?
  • Ans. 

    TDC stands for Top Dead Center and BDC stands for Bottom Dead Center.

    • TDC is the point where the piston is at its highest position in the cylinder.

    • BDC is the point where the piston is at its lowest position in the cylinder.

    • These terms are commonly used in internal combustion engines.

    • The position of the piston at TDC and BDC is important for engine timing and performance.

    • TDC and BDC are also used in reference to the posi...

  • Answered by AI
  • Q5. Top dead center /Bottom dead center
  • Q6. 1 Bar how much PSI?
  • Ans. 

    1 bar is equal to 14.5038 PSI.

    • 1 bar is a unit of pressure measurement in the metric system.

    • PSI stands for pounds per square inch and is a unit of pressure measurement in the imperial system.

    • 1 bar is equal to 100,000 Pascals (Pa) or 14.5038 PSI.

    • This conversion is important in industries such as automotive and aerospace engineering.

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - This is Rotating equipment maintenance
This interview was a technical one but was majorly a stress test. It lasted for about 1 hour 10 minutes. The interviewer wanted to test both my knowledge and communication skills. Most of the questions asked to me were related to my B.Tech curriculum i.e. computer science related topics. He stressed a lot on the basics related to my project topic. Luckily I was able to answer most of the questions correctly. I tried to answer each question with examples and also used props on the table (like pens, paperweights, pen stands etc.) to explain my theories. It was my first offcampus interview, and I think I did pretty well for a fresher. You need to stay calm and should apply presence of mind. Please go through the job description thoroughly word-by-word and recheck your resume to ensure that you are a best-fit for the position.

Mechanical Supervisor Interview Questions asked at other Companies

Q1.Ā What you will do if any person injured inside confine space?
View answer (2)

Technician Interview Questions & Answers

user image Anonymous

posted on 11 Apr 2022

I applied via Walk-in and was interviewed before Apr 2021.Ā There was 1 interview round.

Round 1 - TechnicalĀ 

(2 Questions)

  • Q1. Nil not in users bad
  • Q2. Nil Waste of time correction
  • Ans. 

    Nil waste of time correction refers to the process of eliminating unnecessary or unproductive activities in order to optimize time management.

    • Identify time-wasting activities

    • Prioritize tasks based on importance and urgency

    • Delegate tasks when possible

    • Use time management tools such as calendars and to-do lists

    • Regularly evaluate and adjust time management strategies

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Nil
Keep do ur work with hardworking but it'd not user

Technician Interview Questions asked at other Companies

Q1.Ā What kinds of pipe used for hot and cold water supply ?
View answer (8)

Interview questions from similar companies

I applied via Campus Placement and was interviewed before Nov 2018.Ā There was 1 interview round.

Interview QuestionnaireĀ 

2 Questions

  • Q1. Motor maintenance battery bank Breaker maintenance Earthpit
  • Q2. Which type of maintenance of induction motor
  • Ans. 

    There are two types of maintenance for induction motors: preventive and corrective.

    • Preventive maintenance involves regular inspections, cleaning, lubrication, and replacement of worn parts to prevent breakdowns.

    • Corrective maintenance involves repairing or replacing parts after a breakdown has occurred.

    • Preventive maintenance is more cost-effective in the long run and helps to extend the life of the motor.

    • Examples of pre...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - How many maintenance of squirrel cage induction motor
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Walk-in

Interview QuestionnaireĀ 

10 Questions

  • Q1. Lubricants related questions
  • Q2. Meaning of meneral oil
  • Ans. 

    Mineral oil is a clear, colorless, odorless, and tasteless oil derived from petroleum.

    • Mineral oil is commonly used in cosmetics, pharmaceuticals, and as a lubricant.

    • It is often used as a laxative to relieve constipation.

    • Mineral oil can also be found in baby oil and various skincare products.

    • It is important to note that mineral oil should not be ingested in large quantities as it can cause health issues.

  • Answered by AI
  • Q3. 5w30 pcmo oil questions
  • Q4. Lubricants fired experience
  • Ans. 

    I have 5 years of experience in selling lubricants to industrial clients, achieving 20% growth in sales each year.

    • Developed strong relationships with key clients in the industrial sector

    • Identified and pursued new business opportunities in the lubricants market

    • Provided technical expertise and support to clients in selecting the right lubricants for their needs

    • Consistently met or exceeded sales targets through effective

  • Answered by AI
  • Q5. Lubricants related questions
  • Q6. Working of Lubricants
  • Ans. 

    Lubricants are substances used to reduce friction between surfaces in mutual contact, which ultimately reduces the heat generated when the surfaces move.

    • Lubricants can be in the form of oils, greases, or solid lubricants.

    • They are used in various industries such as automotive, manufacturing, and aerospace.

    • Lubricants help to extend the lifespan of machinery by reducing wear and tear on moving parts.

    • They also help to impr...

  • Answered by AI
  • Q7. Different mco pcmo and cvo Lubricants
  • Ans. 

    MCO, PCMO, and CVO lubricants are different types of lubricants used in various industries for different purposes.

    • MCO stands for Marine Cylinder Oil, used in marine engines to reduce friction and wear.

    • PCMO stands for Passenger Car Motor Oil, used in automotive engines to lubricate moving parts and reduce heat.

    • CVO stands for Commercial Vehicle Oil, used in heavy-duty vehicles like trucks and buses to provide lubrication

  • Answered by AI
  • Q8. Lubricants questions
  • Q9. Different of Lubricants 20w40 10w30
  • Ans. 

    Lubricants 20w40 and 10w30 differ in their viscosity grades, with 20w40 being thicker and better suited for high temperatures.

    • 20w40 has a higher viscosity grade compared to 10w30

    • 10w30 is thinner and flows more easily in cold temperatures

    • 20w40 is better suited for high temperature environments

    • 10w30 may provide better fuel economy due to lower viscosity

  • Answered by AI
  • Q10. Different of Lubricants 15w40 5w30
  • Ans. 

    15w40 and 5w30 are different types of lubricants used in vehicles, with varying viscosity and temperature ranges.

    • 15w40 has a higher viscosity compared to 5w30

    • 5w30 is better suited for colder temperatures due to its lower viscosity

    • 15w40 is commonly used in diesel engines while 5w30 is used in gasoline engines

  • Answered by AI

I applied via Recruitment Consultant and was interviewed before Apr 2020.Ā There were 3 interview rounds.

Interview QuestionnaireĀ 

1 Question

  • Q1. Process related

Interview Preparation Tips

Interview preparation tips for other job seekers - It doesn't matter if you are not subject matter expert... Your behavior matters more than functional.

Chennai Petroleum Corporation Interview FAQs

How many rounds are there in Chennai Petroleum Corporation interview for freshers?
Chennai Petroleum Corporation interview process for freshers usually has 1-2 rounds. The most common rounds in the Chennai Petroleum Corporation interview process for freshers are Technical, Aptitude Test and HR.
What are the top questions asked in Chennai Petroleum Corporation interview for freshers?

Some of the top questions asked at the Chennai Petroleum Corporation interview for freshers -

  1. The steam turbines rotor it's running time which bearing take loa...read more
  2. Which subject you prefer to discuss from chemical e...read more
  3. Which process used to manufacture ur...read more

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Chennai Petroleum Corporation Interview Process for Freshers

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4.7
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