ArcelorMittal Nippon Steel Interview Questions, Process, and Tips

Basic electronics and electrical questions

Q1. What is transformer
Ans. 
A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
• Transformers are used to increase or decrease voltage levels in electrical circuits.

• They consist of two coils of wire, known as the primary and secondary coils, wrapped around a core made of iron or other magnetic materials.

• Examples of transformers include power transformers used in elec...read more
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Q2. Explain Freaday law
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Freaday's law states that the induced electromotive force (emf) in any closed circuit is equal to the negative rate of change of the magnetic flux through the circuit.
• Freaday's law is a fundamental principle in electromagnetism.

• It explains how a changing magnetic field can induce an electric current in a circuit.

• The induced emf is proportional to the rate of change of the magnetic flux.

• Mathematically, the equation for ...read more
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Q3. Explain ohm law
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Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage across it and inversely proportional to the resistance.
• Ohm's Law is represented by the formula V = I * R, where V is voltage, I is current, and R is resistance.

• It helps in calculating the current flowing through a circuit when the voltage and resistance are known.

• It also helps in determining the resistance in a circuit...read more
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Q4. Resistance temperature
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Q5. Induction motor different between square cage vs slippers ring
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Square cage induction motors have a squirrel cage rotor with bars and end rings made of copper or aluminum, while slip ring induction motors have a wound rotor with external resistors connected to slip rings.
• Square cage induction motors have a simpler and more rugged construction compared to slip ring motors.

• Slip ring induction motors allow for external resistance control, enabling speed control and high starting torqu...read more
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Q1. What is lpad and rpad?
Ans. 
lpad and rpad are functions used in SQL to add padding characters to the left or right of a string.
• lpad adds padding characters to the left of a string

• rpad adds padding characters to the right of a string

• Syntax: lpad(string, length, padding_character)

• Example: lpad('123', 5, '0') will result in '00123'

• Syntax: rpad(string, length, padding_character)

• Example: rpad('123', 5, '0') will result in '12300'
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Q1. How to enter the company payroll
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Q1. Tell us about the production cycle
Ans. 
The production cycle is the process of converting raw materials into finished products through a series of steps.
• The production cycle typically includes stages such as sourcing raw materials, manufacturing, quality control, packaging, and distribution.

• Efficient production cycles can help reduce costs, improve quality, and increase productivity.

• For example, in a manufacturing plant, the production cycle may involve rece...read more
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Q2. Tell us about the lean manufacturing process
Ans. 
Lean manufacturing is a systematic method for minimizing waste within a manufacturing system without sacrificing productivity.
• Focuses on eliminating waste in the production process

• Involves continuous improvement and problem-solving

• Emphasizes efficiency and value creation for the customer

• Uses tools such as 5S, Kanban, and value stream mapping

• Promotes a culture of employee involvement and empowerment
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Q1. How to make pile and what angle
Ans. 
To make a pile, drive the pile into the ground at a specific angle to ensure stability and load-bearing capacity.
• Choose the appropriate type and size of pile for the specific project requirements.

• Use a pile driver or hydraulic hammer to drive the pile into the ground at the desired angle.

• Ensure the pile is driven to the required depth to achieve the necessary load-bearing capacity.

• Check the alignment and verticality of...read more
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Q2. Condition of yard and availability and 15 meter height
Ans. 
The condition of the yard is well-maintained and there is availability of a 15 meter height for storage or construction purposes.
• The yard is regularly maintained to ensure cleanliness and safety

• There is ample space for storage or construction activities with a height of 15 meters

• Proper safety measures are in place to prevent accidents or injuries

• Regular inspections are conducted to ensure compliance with regulations
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Q1. Related my academic background
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