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D.D. Enterprises Erection & Commissioning Engineer Interview Questions and Answers

Updated 7 Jan 2022

D.D. Enterprises Erection & Commissioning Engineer Interview Experiences

1 interview found

I applied via Naukri.com and was interviewed in Dec 2021. There was 1 interview round.

Interview Questionnaire 

4 Questions

  • Q1. What is HETP in distillation?
  • Ans. 

    HETP stands for Height Equivalent to a Theoretical Plate and is a measure of the efficiency of a distillation column.

    • HETP is the height of packing or tray divided by the number of theoretical plates.

    • It is used to determine the number of theoretical plates required for a given separation.

    • A lower HETP indicates a more efficient column.

    • HETP can be calculated using the Van Deemter equation.

    • For example, if a distillation co...

  • Answered by AI
  • Q2. What is enthalpy?
  • Ans. 

    Enthalpy is the measure of heat energy in a system at constant pressure.

    • Enthalpy is denoted by the symbol 'H'.

    • It is a thermodynamic property of a system.

    • Enthalpy change is the difference between the enthalpy of the products and the reactants in a chemical reaction.

    • Enthalpy can be used to calculate the heat absorbed or released during a process.

    • Enthalpy is often used in HVAC systems to calculate the amount of heat neede

  • Answered by AI
  • Q3. About family background
  • Q4. Why you want to switch your current job within 5-6 month?
  • Ans. 

    Seeking better career growth opportunities and professional development.

    • Current job did not offer enough opportunities for growth and learning

    • Desire to work in a more challenging and dynamic environment

    • Opportunity to work with new technologies and gain new skills

    • Better compensation and benefits package offered by new employer

    • Alignment of new job with long-term career goals

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Well prepared urself for technical round.
They can ask you some really basics questions if your answers are not convincing you directly reject. Rejection is part of life learn from it and never repeat. Hope you will prepared yourself before going for interview.

Interview questions from similar companies

Interview Questionnaire 

2 Questions

  • Q1. Education
  • Q2. Work experience

I applied via Approached by company and was interviewed in Aug 2021. There were 2 interview rounds.

Round 1 - Case Study 

Quant focussed Case Study (be prepared for calculations)

Round 2 - HR 

(1 Question)

  • Q1. Why are you looking for a change?

Interview Preparation Tips

Interview preparation tips for other job seekers - Be quick and accurate with calculations

Interview Questionnaire 

4 Questions

  • Q1. Why we hair you
  • Q2. How much salary u can expect
  • Q3. Know about your self
  • Q4. What is your strength

Interview Questionnaire 

1 Question

  • Q1. Relates to project & last company experience

Interview Questionnaire 

1 Question

  • Q1. Mostly they checking your presence in interview and asking about your experience for particular field and background.

I applied via Company Website and was interviewed before Oct 2020. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. Typical get to know you and behavioural questions

Interview Preparation Tips

Interview preparation tips for other job seekers - More like a conversation so try to relax

I appeared for an interview in Mar 2017.

Interview Questionnaire 

5 Questions

  • Q1. Related to semiconductors, processors etc. were asked.
  • Q2. Strength
  • Q3. Weaknesses
  • Q4. Hobby
  • Q5. If there are 200 fishes in an aquarium. 99% are red. How many fishes have to be removed to make the red fishes 98 % in the aquarium?
  • Ans. 

    To make the red fishes 98%, 50 fishes have to be removed from the aquarium.

    • Calculate 1% of 200 fishes, which is 2 fishes.

    • To make the red fishes 98%, subtract 1% (2 fishes) from 99% (198 fishes).

    • To find the number of fishes to be removed, divide the difference by 1% (2 fishes).

    • Therefore, 50 fishes have to be removed to make the red fishes 98%.

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: There were 40 aptitude questions of variable difficulty. More questions revolved around topics like time and work, distance, speed, time, profit loss, age etc.
Tips: A regular and prior preparation will go a long way in determining a good test score.
Use tricks to solve the questions and calculations should be fast.
Duration: 30 minutes
Total Questions: 40

Round: Test
Experience: The questions weren't that tough when it came to programming. An example would be conversion of temperature from Celsius to Fahrenheit and vice versa. This was a question in my paper. So I'm hoping the difficulty would be more or less the same.
Tips: Do certified programming courses. They help you a lot in cracking good jobs.
Duration: 45 minutes
Total Questions: 3

Round: Puzzle Interview
Tips: This can be tough if you can't imagine scenarios and situations. So make sure you inculcate critical problem solving thinking in your everyday life. I feel that's the best way to do things in this round.

Round: Technical Interview
Experience: This was a short interview so not much happened.
Tips: Whatever you do just know your stuff properly.

Round: HR Interview
Experience: It was a simple interview. Basic questions and their basic answers helped me get through it.
Tips: The tip would be to stay positive in your approach while answering the questions

Skills: Technical Skills, Interpersonal Communication, Aptitude
College Name: VIT Vellore

I appeared for an interview in Feb 2017.

Interview Preparation Tips

Round: Test
Experience: It was a simple aptitude test in which around 150 students cleared the test.
Duration: 1 hour
Total Questions: 40

Round: Test
Experience: Three programs were given and we had to write the code in either java ,c or c++ and get the required output.Around 90 students cleared this round.
Duration: 1 hour 30 minutes
Total Questions: 3

College Name: VIT Vellore

I appeared for an interview in Mar 2017.

Interview Questionnaire 

5 Questions

  • Q1. Related to semiconductors, processors etc. were asked.
  • Q2. Strength
  • Q3. Weaknesses
  • Q4. Hobbies
  • Q5. If there are 200 fishes in an aquarium. 99% are red. How many fishes have to be removed to make the red fishes 98 % in the aquarium?
  • Ans. 

    To make the red fishes 98%, 50 fishes have to be removed from the aquarium.

    • Calculate 1% of 200 fishes to find the number of red fishes.

    • Subtract the number of red fishes from 200 to find the number of non-red fishes.

    • Calculate 2% of the total number of fishes to find the desired number of red fishes.

    • Subtract the desired number of red fishes from the current number of red fishes to find the number of fishes to be removed.

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: There were 40 aptitude questions of variable difficulty. More questions revolved around topics like time and work, distance, speed, time, profit loss, age etc.
Tips: A regular and prior preparation will go a long way in determining a good test score.
Use tricks to solve the questions and calculations should be fast.
Duration: 30 minutes
Total Questions: 40

Round: Test
Experience: The questions weren't that tough when it came to programming. An example would be conversion of temperature from Celsius to Fahrenheit and vice versa. This was a question in my paper. So I'm hoping the difficulty would be more or less the same.
Tips: Do certified programming courses. They help you a lot in cracking good jobs.
Duration: 45 minutes
Total Questions: 3

Round: Puzzle Interview
Tips: This can be tough if you can't imagine scenarios and situations. So make sure you inculcate critical problem solving thinking in your everyday life. I feel that's the best way to do things in this round.

Round: Technical Interview
Experience: This was a short interview so not much happened.
Tips: Whatever you do just know your stuff properly.

Round: HR Interview
Experience: It was a simple interview. Basic questions and their basic answers helped me get through it.
Tips: The tip would be to stay positive in your approach while answering the questions

Skills: Technical Skill, Interpersonal Communication, Aptitude
College Name: VIT Vellore

D.D. Enterprises Interview FAQs

How to prepare for D.D. Enterprises Erection & Commissioning Engineer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at D.D. Enterprises. The most common topics and skills that interviewers at D.D. Enterprises expect are CGMP, Change Control, Customer Handling, Design Engineering and Drawing.
What are the top questions asked in D.D. Enterprises Erection & Commissioning Engineer interview?

Some of the top questions asked at the D.D. Enterprises Erection & Commissioning Engineer interview -

  1. What is HETP in distillati...read more
  2. What is enthal...read more

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D.D. Enterprises Erection & Commissioning Engineer Salary
based on 4 salaries
₹3 L/yr - ₹4.8 L/yr
11% less than the average Erection & Commissioning Engineer Salary in India
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