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Hindalco Industries 2nd class Boiler Operator Interview Questions, Process, and Tips
Hindalco Industries 2nd class Boiler Operator Interview Experiences
1 interview found
Selected
I applied via Approached by Company and was interviewed in Dec 2022. There were 2 interview rounds.
(4 Questions)
- Q1. Type of boiler , boiler mounting
- Ans.
There are various types of boilers and different types of boiler mountings are used depending on the type of boiler.
Types of boilers include fire tube, water tube, and electric boilers.
Boiler mountings include safety valves, water level indicators, pressure gauges, and blowdown valves.
The type of boiler and its application determine the type of boiler mounting used.
For example, a fire tube boiler may have a different s
- Q2. Use of safety valve ,use of NRV
- Ans.
Safety valve and NRV are important safety devices in a boiler system.
Safety valve is used to release excess pressure in the boiler to prevent explosions.
NRV (Non-Return Valve) is used to prevent backflow of water or steam in the system.
Safety valve should be tested regularly to ensure proper functioning.
NRV should be installed in the correct direction to prevent backflow.
Both safety valve and NRV are required by law in...
- Q3. Use of Economiser , Use of APH
- Ans.
Economiser and APH are used in boilers to increase efficiency and reduce emissions.
Economiser preheats the feed water using exhaust gases, reducing fuel consumption.
APH (Air Preheater) preheats the combustion air, reducing fuel consumption and emissions.
Both are commonly used in large industrial boilers.
Economiser can increase efficiency by up to 5%.
APH can increase efficiency by up to 2% and reduce emissions by up to
- Q4. Use of Na3Po4 use of DM water
- Ans.
Na3PO4 is used as a pH buffer in boilers while DM water is used to prevent scaling and corrosion.
Na3PO4 is added to boiler water to maintain a pH level between 10 and 11, which helps prevent corrosion and scaling.
DM water, or deionized water, is used in boilers to prevent scaling and corrosion by removing minerals and impurities.
Using DM water in combination with Na3PO4 can help maintain a clean and efficient boiler sy
Interview Preparation Tips
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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 Recruitment Consultant and was interviewed in Nov 2019. There were 3 interview rounds.
Interview Questionnaire
1 Question
- Q1. What is mining ? which purpose to excavate soil
- Ans.
Mining is the process of extracting valuable minerals or other geological materials from the earth's surface or underground.
Mining is done to obtain various resources such as coal, gold, diamonds, and metals like iron, copper, and aluminum.
It involves the removal of soil, rocks, and other materials to access the desired minerals.
Mining can be categorized into surface mining and underground mining, depending on the loca...
Interview Preparation Tips
Assistant Manager Interview Questions & Answers
CMR Green Technologies
Anonymous
posted on 22 Dec 2023
Selected
I applied via Recruitment Consulltant and was interviewed before Dec 2022. There were 5 interview rounds.
Basic mathematics and english
(1 Question)
- Q1. About yourself and salary
(4 Questions)
- Q1. What is hyper seever
- Ans.
Hyper Server is a high-performance server software that enables efficient data processing and communication.
Hyper Server is designed to handle large volumes of data and perform complex computations.
It provides fast and reliable communication between clients and servers.
Hyper Server is commonly used in industries such as finance, telecommunications, and scientific research.
Examples of Hyper Server implementations includ...
- Q2. Network-load-balancing
- Q3. Firewall configurations
- Q4. Active Directory Administration
(1 Question)
- Q1. Salary expectations and notice period
Skills evaluated in this interview
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
- Q2. How much man power you control in daily shift
Selected
I applied via Referral and was interviewed before Sep 2022. There were 4 interview rounds.
(1 Question)
- Q1. Protections and Interlock, Light Up procedures
(1 Question)
- Q1. Interaction, Asking about previous plants
(1 Question)
- Q1. Salary negotiations
Selected
I appeared for an interview before Mar 2024.
(1 Question)
- Q1. Introduction & JD related queries & questions
Interview Preparation Tips
I applied via Campus Placement and was interviewed before Aug 2022. There were 3 interview rounds.
Prepare the core subjects som Thermo fluids and asked some of the manufacturing process
How we can reduce the use of non renewable resources
(2 Questions)
- Q1. Hooks law, modulus of rigidity,stress strain curve
- Q2. About your industrial training
Selected
Basic exam with some technical questions
Group of 6 were given a topic and we discussed.
(2 Questions)
- Q1. Difference between structural bridge and concrete bridge?
- Ans.
Structural bridges can be made of various materials while concrete bridges specifically use concrete as the primary material.
Structural bridges can be made of steel, wood, or other materials, while concrete bridges are primarily made of concrete.
Concrete bridges are known for their durability and strength, making them a popular choice for infrastructure projects.
Structural bridges may require more maintenance and upkee...
- Q2. Howrah bridge structure?
- Ans.
The Howrah Bridge is a cantilever bridge that spans the Hooghly River in West Bengal, India.
Built in 1943, it is one of the busiest bridges in the world, carrying over 100,000 vehicles and countless pedestrians daily.
The bridge does not have any nuts or bolts and is held together by rivets.
It is a famous landmark in Kolkata and is often referred to as the 'Gateway of Kolkata'.
Interview Preparation Tips
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
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Hindalco Industries 2nd class Boiler Operator Interview Process
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Hindalco Industries 2nd class Boiler Operator Reviews and Ratings
based on 3 reviews
Rating in categories
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Assistant Manager
988
salaries
|  ₹5 L/yr - ₹16.8 L/yr |
|
Junior Engineer
603
salaries
| ₹2.5 L/yr - ₹7 L/yr |
|
Manager
552
salaries
| ₹8.5 L/yr - ₹28 L/yr |
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Assistant Engineer
485
salaries
| ₹3.7 L/yr - ₹8.8 L/yr |
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Deputy Manager
271
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