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HMEL's Guru Gobind Singh Petroleum Refinery Instrumentation Technician Interview Questions and Answers

Updated 22 Feb 2025

HMEL's Guru Gobind Singh Petroleum Refinery Instrumentation Technician Interview Experiences

1 interview found

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I was interviewed in Jan 2025.

Round 1 - Technical 

(5 Questions)

  • Q1. Types of RTD'S, THERMOCOUPLE, Control Valve, ON/OFF VALVE, PROXIMITY SENSOR, SWITCH, LOAD CELL,
  • Ans. 

    Types of RTD's, thermocouples, control valves, on/off valves, proximity sensors, switches, and load cells used in instrumentation.

    • RTD's (Resistance Temperature Detectors) - platinum, nickel, copper

    • Thermocouples - Type K, Type J, Type T

    • Control Valve - globe valve, butterfly valve, ball valve

    • On/Off Valve - solenoid valve, gate valve, diaphragm valve

    • Proximity Sensor - inductive sensor, capacitive sensor, ultrasonic sensor

    • ...

  • Answered by AI
  • Q2. Typey of Transmitter( LT,PT, FT ,DPT, RADAR, MASS FLOW),
  • Ans. 

    Transmitters used in instrumentation include LT, PT, FT, DPT, RADAR, and MASS FLOW.

    • LT - Level Transmitter measures the level of a substance in a tank or container.

    • PT - Pressure Transmitter measures pressure in a system.

    • FT - Flow Transmitter measures the flow rate of a substance in a pipe or channel.

    • DPT - Differential Pressure Transmitter measures the difference in pressure between two points.

    • RADAR - Radar Transmitter u...

  • Answered by AI
  • Q3. Types of SOV'S, Gauges , limit switch
  • Ans. 

    Types of SOV's, gauges, and limit switches used in instrumentation.

    • Types of SOV's: solenoid-operated valves, pneumatic valves, electrically-operated valves

    • Types of gauges: pressure gauges, temperature gauges, level gauges

    • Types of limit switches: mechanical limit switches, proximity limit switches, photoelectric limit switches

  • Answered by AI
  • Q4. AFR, BUSTER, Positioner,
  • Q5. Vibration Sensor, speed sensor
Round 2 - Group Discussion 

Diploma in Electronics Engg.

Round 3 - Group Discussion 

Diploma in Electronics Engg

Interview questions from similar companies

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Approached by Company and was interviewed in Dec 2023. There was 1 interview round.

Round 1 - Technical 

(3 Questions)

  • Q1. Ritik Kumar Maurya
  • Q2. Indian oil corporation limited Panipat
  • Q3. One year apprentice training in Instrumentation and control

Interview Questionnaire 

8 Questions

  • Q1. Run us through your life till this point. [What?!?]
  • Ans. 

    I grew up in a small town, went to college, and pursued a career in tech.

    • Born and raised in a small town

    • Attended college and earned a degree in Computer Science

    • Started working in tech as a software engineer

    • Moved to a big city for better job opportunities

    • Continued to advance my career and gain new skills

  • Answered by AI
  • Q2. What are the various differences between the different modes of heat transfer? [A pure core question that tests you to the core]
  • Ans. 

    Heat transfer occurs through conduction, convection, and radiation.

    • Conduction is the transfer of heat through a material without any movement of the material itself.

    • Convection is the transfer of heat through the movement of fluids or gases.

    • Radiation is the transfer of heat through electromagnetic waves.

    • Examples include touching a hot stove (conduction), boiling water (convection), and feeling the warmth of the sun (rad

  • Answered by AI
  • Q3. I want to design an air-cooled radiator for an engine. How would you decide the number of fins? [Considerable time was spent on this]
  • Q4. What would you do to reduce the risk of Global Warming posed by using R12 in air-conditioners? [I said use R134a. Apparently, this is not completely environment-friendly. The Americans are trying to fool u...
  • Ans. 

    Reduce risk of global warming from R12 in air-conditioners

    • Use alternative refrigerants like R134a or R290

    • Ensure proper disposal of old refrigerants

    • Regular maintenance and leak detection to prevent emissions

    • Encourage energy-efficient ACs to reduce overall emissions

    • Promote use of natural refrigerants like CO2 or ammonia

    • Implement regulations and policies to phase out harmful refrigerants

    • Invest in research and development

  • Answered by AI
  • Q5. What is the difference between a summation and an integral? [This was asked because I mentioned Math as my strongest point]
  • Q6. In what cases is the Simplex method of solving simultaneous equations used?
  • Ans. 

    The Simplex method is used to solve linear programming problems with multiple variables and constraints.

    • Used in optimization problems

    • Used to find the optimal solution

    • Used when there are multiple variables and constraints

    • Examples include production planning and resource allocation

  • Answered by AI
  • Q7. Which sector of the industry do you think will boom in the next five years? [My answer: Statistics]
  • Ans. 

    Artificial Intelligence (AI) sector is expected to boom in the next five years.

    • AI is being integrated into various industries such as healthcare, finance, and transportation.

    • The global AI market is expected to reach $267 billion by 2027.

    • AI is being used for predictive analytics, natural language processing, and image recognition.

    • Companies such as Google, Amazon, and Microsoft are investing heavily in AI research and de

  • Answered by AI
  • Q8. Do you have any questions for us?

Interview Preparation Tips

General Tips: "1. I felt the Apti was the toughest part in the whole process. 45 seconds is just not sufficient to answer the questions esp. the ones on Probability; so brush up on the math! If you've learnt your concepts well, the technical questions ought to be a breeze.
2. Make sure you speak some sense at least thrice in the GD, and you're through.
3. They never once interrupted me in the PI. They waited for me to complete what I was saying, and then the next question was based on my last two sentences! So be very careful of what you're saying esp. while answering the technical questions. Most importantly, be very genuine throughout the interview- speak your heart out- and don't worry about how it's going, in the middle of it!

Good luck."
Skill Tips: [It's generally good to ask them a question or two here. I asked them if I could choose my preferred work location, and how the work-culture was at Tata Motors]"
Skills:
College Name: Veermata Jijabai Technological Institute, Mumbai [ VJTI ]

I applied via Campus Placement and was interviewed before May 2020. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. Tell me about your self?

Interview Preparation Tips

Interview preparation tips for other job seekers - .

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

Round 1 - Technical 

(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

Interview Questionnaire 

2 Questions

  • Q1. Tell me about your job role
  • Q2. I share my previus company exprience

Interview Preparation Tips

Interview preparation tips for other job seekers - be practical and be serious about thing and
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
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 

(3 Questions)

  • Q1. Of automobails releted
  • Ans. 

    Doing work break pipi in tata magic ambulance

  • Answered by Alokkumar Gupta
  • Q2. Trim line related question
  • Ans. 

    Head lamp fitment and teldor lamp fitment

  • Answered by Alokkumar Gupta
  • Q3. Trin line related question
  • Ans. 

    R h and l h beding fitment and tata magic express beding l h and r h and tel dor beding fitment

  • Answered by Alokkumar Gupta

Interview Preparation Tips

Interview preparation tips for other job seekers - Doing work in company in safety and good so i want
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Walk-in and was interviewed in Jan 2023. 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 

(3 Questions)

  • Q1. List out air-conditioning parts of the car and what is working condition
  • Ans. 

    Air-conditioning parts of a car and their working condition.

    • The compressor compresses the refrigerant gas.

    • The condenser cools the refrigerant gas into a liquid.

    • The evaporator absorbs heat from the car's interior.

    • The expansion valve regulates the flow of refrigerant.

    • The receiver-drier removes moisture from the refrigerant.

    • All parts must be in good working condition for optimal cooling.

    • Leaks in the system can cause poor

  • Answered by AI
  • Q2. Vehicle starting problem what is process to check
  • Ans. 

    To check a vehicle starting problem, follow these steps.

    • Check the battery for charge and corrosion

    • Inspect the starter motor and solenoid

    • Examine the ignition switch and wiring

    • Test the fuel pump and filter

    • Check for any error codes using a diagnostic tool

  • Answered by AI
  • Q3. What is differnce between petrol engine and diesel engine
  • Ans. 

    Petrol engines use spark ignition while diesel engines use compression ignition.

    • Petrol engines have a higher power output but lower fuel efficiency compared to diesel engines.

    • Diesel engines have a longer lifespan and are more durable than petrol engines.

    • Petrol engines are lighter and more compact than diesel engines.

    • Examples of petrol engines include those found in cars and motorcycles while diesel engines are commonly

  • Answered by AI
Round 3 - HR 

(2 Questions)

  • Q1. About yourself and your family
  • Q2. Let be talk about your work experience

Interview Preparation Tips

Interview preparation tips for other job seekers - Let be confident and be bold stey cool 😎 work on it role perfect

I applied via Job Fair and was interviewed before Nov 2021. There were 5 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Don’t add your photo or details such as gender, age, and address in your resume. These details do not add any value.
View all Resume tips
Round 2 - Case Study 

ITI pass 10 + 2 subject electrician

Round 3 - Group Discussion 

Electrician Course ITI first option

Round 4 - Coding Test 

Tata Motors Company Of India International

Round 5 - Aptitude Test 

ITI electrician and 10 + 2 with complete

Interview Preparation Tips

Interview preparation tips for other job seekers - Best company best marketing Tata India Aadhar state
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Don’t add your photo or details such as gender, age, and address in your resume. These details do not add any value.
View all Resume tips
Round 2 - Technical 

(2 Questions)

  • Q1. Yes good company and csr
  • Q2. Yes good this company really good

Interview Preparation Tips

Interview preparation tips for other job seekers - Good
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HMEL's Guru Gobind Singh Petroleum Refinery Interview FAQs

How many rounds are there in HMEL's Guru Gobind Singh Petroleum Refinery Instrumentation Technician interview?
HMEL's Guru Gobind Singh Petroleum Refinery interview process usually has 3 rounds. The most common rounds in the HMEL's Guru Gobind Singh Petroleum Refinery interview process are Group Discussion and Technical.
What are the top questions asked in HMEL's Guru Gobind Singh Petroleum Refinery Instrumentation Technician interview?

Some of the top questions asked at the HMEL's Guru Gobind Singh Petroleum Refinery Instrumentation Technician interview -

  1. Types of RTD'S, THERMOCOUPLE, Control Valve, ON/OFF VALVE, PROXIMITY SENSOR, ...read more
  2. Typey of Transmitter( LT,PT, FT ,DPT, RADAR, MASS FLO...read more
  3. Types of SOV'S, Gauges , limit swi...read more

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HMEL's Guru Gobind Singh Petroleum Refinery Instrumentation Technician Interview Process

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Interview experience

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Excellent
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