ArcelorMittal Nippon Steel OJT Interview Questions, Process, and Tips

Thermodynamics laws govern energy transfer and transformation in physical systems.

• First law of thermodynamics states that energy cannot be created or destroyed, only transferred or converted.

• Second law of thermodynamics states that the entropy of an isolated system always increases over time.

• Third law of thermodynamics states that as temperature approaches absolute zero, the entropy of a system approaches a minimum val...read more

I am currently working as a Marketing Coordinator at a digital marketing agency.

• Creating and implementing marketing strategies

• Managing social media accounts

• Analyzing campaign performance

• Collaborating with clients and team members

Steelmaking is the process of producing steel from iron ore and/or scrap metal through various methods such as blast furnaces or electric arc furnaces.

• Iron ore is first mined and then processed to remove impurities.

• The purified iron ore is then combined with coal and limestone in a blast furnace to create molten iron.

• The molten iron is further processed to remove impurities and adjust the carbon content to create steel...read more

Types of pumps include centrifugal, reciprocating, and rotary pumps. Heat transfer modes include conduction, convection, and radiation.

• Types of pumps: centrifugal, reciprocating, rotary

• Heat transfer modes: conduction, convection, radiation

• Heat transfer coefficient: measure of how well a material transfers heat

• Mass transfer coefficient: measure of how well a material transfers mass

Various types of pumps and valves are used in industries for different applications.

• Types of pumps: centrifugal pumps, positive displacement pumps, diaphragm pumps, gear pumps

• Types of valves: gate valves, globe valves, ball valves, butterfly valves

• Pumps and valves are used in industries such as oil and gas, water treatment, chemical processing

• Each type of pump and valve has specific characteristics and applications

There are three main modes of heat transfer: conduction, convection, and radiation.

• Conduction: Heat transfer through direct contact between particles. Example: Touching a hot stove.

• Convection: Heat transfer through the movement of fluids (liquids or gases). Example: Boiling water.

• Radiation: Heat transfer through electromagnetic waves. Example: Sunlight warming the Earth.

The driving force of heat and mass transfer is the difference in temperature or concentration between two points.

• Temperature difference drives heat transfer - for example, hot coffee cooling down in a room

• Concentration gradient drives mass transfer - for example, diffusion of perfume in a room