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Hindustan Zinc Instrument Engineer Interview Questions and Answers
Hindustan Zinc Instrument Engineer Interview Experiences
1 interview found
Interview Questionnaire
4 Questions
- Q1. What is the diffrence between RTD and thermocouple?
- Ans.
RTD measures temperature using resistance while thermocouple uses voltage difference.
RTD has higher accuracy and stability than thermocouple.
RTD is more expensive than thermocouple.
RTD is suitable for precise temperature measurement while thermocouple is better for high temperature measurement.
RTD has a linear relationship between resistance and temperature while thermocouple has a non-linear relationship.
Examples of R...
- Q2. How we know the RTD showing correct temperature only use multimeter ?
- Ans.
Correct temperature indication by RTD can be verified using multimeter.
Check the resistance value of RTD using multimeter and compare it with the standard resistance-temperature chart.
Ensure that the RTD is properly connected to the measuring instrument and there are no loose connections.
Perform a calibration check periodically to ensure accurate temperature measurement.
Use a reference thermometer to cross-check the te...
- Q3. Can we use 0-10 v in plc?
- Ans.
Yes, 0-10 V can be used in PLC as an analog input or output signal.
PLCs typically have analog input and output modules that can handle 0-10 V signals.
The signal can be used to measure or control variables such as temperature, pressure, or flow.
The resolution and accuracy of the signal depend on the PLC and the analog module used.
Some PLCs may require additional scaling or conversion of the signal to match the desired r...
- Q4. What is dry and wet wiring in plc ?
Interview Preparation Tips
Skills evaluated in this interview
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Interview questions from similar companies
Instrument Engineer Interview Questions & Answers
Hindalco Industries
Anonymous
posted on 12 May 2025
Selected
I appeared for an interview in Apr 2025, where I was asked the following questions.
- Q1. Thermocouple.pressure gauge.servo valve.propotional valve pressure transmitter.pressure switch
- Q2. Micrometre.vernior caliper.dail gauges
- Q3. Nozzle . probe
Assistant Manager Interview Questions & Answers
Vedanta Resources
Aditya Sharma
posted on 19 May 2017
I appeared for an interview in Oct 2016.
Interview Questionnaire
6 Questions
- Q1. Introduce yourself.
- Ans.
Experienced retail professional with strong leadership skills and a passion for customer service.
Over 5 years of retail management experience
Proven track record of increasing sales and improving customer satisfaction
Strong leadership and team-building skills
Passionate about providing excellent customer service
Bachelor's degree in Business Administration
- Q2. How is alumina obtained from bauxite?
- Ans.
Alumina is obtained from bauxite through the Bayer process.
Bauxite is crushed and mixed with sodium hydroxide to form a slurry.
The slurry is heated and pressurized in a digester to dissolve the alumina content.
The resulting solution is cooled and filtered to remove impurities.
The purified solution is then heated to precipitate the alumina as a white powder.
The alumina powder is washed, dried, and calcined to produce pu...
- Q3. Reaction for Al extraction from alumina.
- Ans.
The reaction for Al extraction from alumina involves the reduction of alumina using carbon or electrolysis.
Alumina (Al2O3) is first converted into aluminum chloride (AlCl3) by reacting with hydrochloric acid.
The aluminum chloride is then reduced to aluminum metal by either carbon reduction or electrolysis.
In carbon reduction, carbon (usually in the form of coke) is heated with the aluminum chloride to produce aluminum ...
- Q4. Stainless steel production.
- Q5. Types of cast iron.
- Ans.
There are four main types of cast iron: gray iron, white iron, ductile iron, and malleable iron.
Gray iron is the most common type and has excellent castability and good machinability.
White iron is very hard and brittle, often used for wear-resistant applications.
Ductile iron has high strength and ductility, making it suitable for a wide range of applications.
Malleable iron is heat-treated to improve its strength and du...
- Q6. Location constraints and little info about family.
Interview Preparation Tips
Experience: Basic Aptitude and Verbal Test - Easy Questions
Tips: Improve Speed and Accuracy
Duration: 30 minutes
Total Questions: 35
Round: Group Discussion
Experience: Two sects formed; one supporting the argument and other opposing it. Wage gap, Indian Mine Law, social pressure, patriarchal mentality and crime against women were discussed.
Tips: Communication skills are more important than content. Show confidence and speak fluently. Factual and grammatical errors can be ignored.
Duration: 15 minutes
Round: Technical + HR Interview
Experience: They were chilled out and were giving time to speak. Little hints were also being given.
Tips: Be thorough with basics and don't give nonsensical answers if you don't know.
Skills: Technical Knowledge(ML
College Name: NIT Raipur
I applied via Naukri.com and was interviewed before Mar 2021. There were 3 interview rounds.
(7 Questions)
- Q1. What are your salary expectations?
- Q2. What is your family background?
- Q3. Share details of your previous job.
- Q4. What are your strengths and weaknesses?
- Q5. Tell me about yourself.
- Q6. Why should we hire you?
- Q7. Why are you looking for a change?
(1 Question)
- Q1. Basics+field oriented
(1 Question)
- Q1. Salary negotiation at the last round
Interview Preparation Tips
No problem ..
I applied via ABG internal recruitment system and was interviewed in May 2021. There were 3 interview rounds.
Interview Questionnaire
1 Question
- Q1. Power Plant Operation Basics. Heat Rate and Boiler Efficiency Optimization Projects. APC reduction projects. Workplace safety. Previous projects that I worked on.
Interview Preparation Tips
I applied via Referral and was interviewed in Feb 2022. There were 2 interview rounds.
Drawing and some calculation of tank volume
Interview Preparation Tips
Selected
I applied via Campus Placement and was interviewed before Oct 2023. There was 1 interview round.
GD on the Topic - Quality of coal is deteriorating, what should the company do?
Assistant Manager Interview Questions & Answers
CMR Green Technologies
Anonymous
posted on 13 Jul 2024
Selected
I applied via Company Website and was interviewed in Jan 2024. There were 3 interview rounds.
(2 Questions)
- Q1. What is the name of furnace?
- Ans.
The name of the furnace is typically based on its function or design, such as blast furnace, muffle furnace, or electric furnace.
Furnaces can be named based on their heating method, such as electric, gas, or oil furnace
Some furnaces are named after their specific function, like blast furnace used in metal smelting
Others may be named after their design, such as muffle furnace used for controlled heating
- Q2. Flux percentage??
What are the daily work and what is the reporting procedure?
(2 Questions)
- Q1. What is expected salary
- Ans.
I expect a salary that reflects my skills, experience, and the industry standards for this role.
Research industry standards: For example, similar roles in our region typically offer between $60,000 and $80,000.
Consider my experience: With over 5 years in management, I bring valuable skills that can enhance team performance.
Discuss benefits: I am also interested in the overall compensation package, including bonuses and...
- Q2. How much man power you control in daily shift
Assistant Manager Interview Questions & Answers
CMR Green Technologies
Anonymous
posted on 20 Feb 2025
I appeared for an interview before Feb 2024.
(1 Question)
- Q1. Past company details
(2 Questions)
- Q1. Furnace maintenance
- Q2. Hydraulic and pneumatic system
(1 Question)
- Q1. PLC, HMI, sensor
(1 Question)
- Q1. Motor, protection, relay
(1 Question)
- Q1. Job experience details
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