Coal India Asst.Marketing Manager Interview Questions and Answers

I am a recent graduate with a degree in Mechanical Engineering and a passion for problem-solving and innovation.

• Graduated with a degree in Mechanical Engineering

• Passionate about problem-solving and innovation

• Completed internships at XYZ Company and ABC Company

• Led a team project on designing a new product

• Proficient in CAD software and technical drawing

A GIS based rectifier is a device that converts alternating current (AC) to direct current (DC) using geographic information system (GIS) technology.

• GIS based rectifiers are commonly used in electrical power systems to convert AC power to DC power.

• They are often used in applications such as cathodic protection systems for pipelines and other metal structures.

• GIS technology is used to monitor and control the rectifier's...read more

I am a recent graduate with a degree in Mechanical Engineering. I have completed internships at two different companies, where I gained hands-on experience in designing and testing mechanical systems.

• Recent graduate with a degree in Mechanical Engineering

• Completed internships at two different companies

• Hands-on experience in designing and testing mechanical systems

My strength is my ability to work well in a team and my weakness is my tendency to be overly critical of my own work.

• Strength: Team player, good communication skills, collaborative

• Weakness: Self-critical, perfectionist, can lead to delays in completing tasks

My favorite subject is Mechanical Engineering.

• I enjoy learning about thermodynamics and fluid mechanics.

• I am fascinated by the design and analysis of mechanical systems.

• I have a passion for understanding how machines work and how they can be optimized for efficiency.

During my training, I observed the blasting process which involved the use of shovel, dumper, dozer, and crushers.

• Shovel: Used for loading blasted material into dumpers.

• Dumper: Used for transporting the blasted material from the site to the desired location.

• Dozer: Used for leveling the ground after blasting.

• Crushers: Used for crushing the blasted material into smaller sizes for further processing.

• Example: The shovel wa...read more

Blast furnace is a large steel structure used to extract iron from its ore through a chemical process.

• Raw materials like iron ore, coke, and limestone are fed into the furnace from the top.

• Hot air is blown into the furnace from the bottom, which reacts with the coke to produce carbon monoxide.

• Carbon monoxide reduces the iron ore to iron, which melts and collects at the bottom of the furnace.

• The impurities in the iron o...read more

Ductility and malleability are properties of materials to deform under stress without breaking.

• Ductility is the ability of a material to be drawn into a wire without breaking.

• Malleability is the ability of a material to be hammered or rolled into thin sheets without breaking.

• Both properties are important in metalworking and manufacturing.

• Examples of ductile materials include copper and gold.

• Examples of malleable materi

The iron content in pig iron varies from 90-94% depending on the manufacturing process.

• Pig iron is the product of smelting iron ore with a high-carbon fuel such as coke.

• The iron content in pig iron is higher than in wrought iron or cast iron.

• The iron content in pig iron can vary depending on the manufacturing process and the quality of the iron ore used.

• The iron content in pig iron is typically between 90-94%.

Pig iron is a raw material used in the production of steel and iron products.

• Pig iron is produced by smelting iron ore in a blast furnace.

• It contains high amounts of carbon, silicon, and other impurities.

• Pig iron is used as a raw material in the production of steel and iron products.

• It is also used in the manufacturing of cast iron products such as pipes, stoves, and engine blocks.

Coke is obtained from coal by heating it in the absence of air.

• Coke is a fuel with high carbon content and low impurities.

• It is used in the production of iron and steel.

• Coke is also used in the manufacture of electrodes, carbon brushes, and other carbon products.

• The process of obtaining coke is called coking.

• Coking coal is the type of coal used for coking.

• Coke is produced by heating coking coal in the absence of air at...read more

The common utensil grade Aluminium is 3003 Aluminium.

• 3003 Aluminium is a non-heat treatable alloy

• It has excellent workability and is highly resistant to corrosion

• It is commonly used in kitchen utensils, food and chemical handling equipment, and storage tanks

Yes, thermal coke can be used in BF as a fuel and reducing agent.

• Thermal coke is a byproduct of coal tar and is used as a fuel and reducing agent in blast furnaces.

• It has a high carbon content and low ash content, making it an ideal choice for BF.

• Thermal coke is cheaper than metallurgical coke and can be used as a substitute in some cases.

• However, its use is limited due to its high sulfur content, which can lead to env...read more