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ArcelorMittal Nippon Steel
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I applied via Job Portal and was interviewed in Nov 2023. There were 2 interview rounds.
A turbine is a machine that converts the energy from a fluid flow into mechanical energy.
Turbines are commonly used in power plants to generate electricity from steam or water flow.
There are different types of turbines such as steam turbines, gas turbines, and water turbines.
Turbines have blades that are rotated by the fluid flow, causing a shaft to spin and generate power.
The mechanical energy produced by turbines can
A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally iron.
Used for smelting iron ores to produce iron
Consists of a furnace chamber with a stack and tuyeres
Operates at high temperatures using coke as fuel
Produces molten iron and slag as byproducts
A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.
Consists of two coils of wire, known as primary and secondary coils
Primary coil is connected to a power source, while secondary coil is connected to the load
Works on the principle of electromagnetic induction to change voltage levels
Used to step up or step down voltage levels in electrical systems
Ex...
Types of transformers include step-up, step-down, isolation, autotransformer, and distribution transformers.
Step-up transformer increases voltage levels
Step-down transformer decreases voltage levels
Isolation transformer provides electrical isolation between primary and secondary windings
Autotransformer has a single winding with multiple taps for different voltage levels
Distribution transformer is used to supply power t
Transformers work on the principle of electromagnetic induction to transfer electrical energy between two or more circuits.
Transformers have two coils of wire, known as primary and secondary coils, which are wound around a core made of ferromagnetic material.
When an alternating current flows through the primary coil, it creates a changing magnetic field around the coil.
This changing magnetic field induces a voltage in ...
Resistance is the opposition to the flow of electric current in a material.
Resistance is measured in ohms (Ω).
It is caused by collisions between electrons and atoms in a material.
Materials with high resistance are insulators, while materials with low resistance are conductors.
Resistance can be calculated using Ohm's Law: R = V/I, where R is resistance, V is voltage, and I is current.
Diodes are electronic components that allow current to flow in one direction only. Common types include PN junction diodes, Zener diodes, Schottky diodes, and light-emitting diodes (LEDs).
PN junction diodes: Basic diodes that allow current to flow in one direction only.
Zener diodes: Diodes that operate in the reverse breakdown region and are used for voltage regulation.
Schottky diodes: Diodes with a lower forward volta...
Power factor is a measure of how effectively electrical power is being used in a circuit.
Power factor is the ratio of real power (kW) to apparent power (kVA) in an electrical circuit.
It indicates how efficiently power is being converted into useful work.
A power factor of 1 (or 100%) means all the power is being used effectively, while a power factor of 0 means none of the power is being used efficiently.
Power factor ca...
A DC motor is a type of electric motor that runs on direct current electricity, converting electrical energy into mechanical energy.
DC motors have a rotating armature and a stationary field magnet
They operate based on the principle of Lorentz force
Common types include brushed and brushless DC motors
DC motors are widely used in various applications such as robotics, electric vehicles, and industrial machinery
AC motors use alternating current and are more commonly used for industrial applications, while DC motors use direct current and are often used in household appliances.
AC motors use alternating current, while DC motors use direct current
AC motors are more commonly used in industrial applications, while DC motors are often used in household appliances
AC motors are generally more efficient and require less maintenance co...
An electromagnetic field is a physical field produced by electrically charged objects. It affects the behavior of charged objects in the vicinity of the field.
Consists of electric and magnetic components
Generated by electric charges and currents
Can be static or dynamic
Used in various applications such as wireless communication and MRI machines
Types of motors include DC motors, AC motors, synchronous motors, and induction motors. Each type operates based on different principles.
DC motors operate using direct current and have a commutator to switch the current direction, examples include brushed and brushless DC motors.
AC motors operate using alternating current and include types like synchronous motors and induction motors.
Synchronous motors rotate at a cons...
VFD stands for Variable Frequency Drive, a type of motor controller that drives an electric motor by varying the frequency and voltage supplied to the motor.
VFDs are used to control the speed and torque of AC motors in various applications.
They are commonly used in HVAC systems, industrial pumps, fans, and conveyor systems.
VFDs can improve energy efficiency by matching the motor speed to the actual load requirements.
Th...
Earthing is the process of connecting electrical equipment to the earth to prevent electric shocks and ensure safety.
Earthing provides a path for fault currents to flow safely into the ground.
It helps in protecting equipment and individuals from electrical faults.
Earthing reduces the risk of fire hazards in electrical systems.
Types of earthing include plate earthing, pipe earthing, and rod earthing.
Proper earthing is e...
Types of motors include DC motors, AC motors (induction, synchronous), stepper motors, and servo motors. Each type operates based on different principles.
DC motors operate on the principle of Lorentz force, where a current-carrying conductor experiences a force in a magnetic field.
AC induction motors work on the principle of electromagnetic induction, where a rotating magnetic field induces current in the rotor.
AC sync...
A contactor is an electrical device used to switch an electrical circuit on or off.
Contactor is typically used in applications where high current needs to be controlled, such as in industrial machinery.
It consists of a coil which when energized creates a magnetic field that pulls in a set of contacts to make or break the circuit.
Contactor can be controlled manually or automatically through a control system.
Common examp...
Cooking and crawling are terms used in electrical engineering to describe the movement of a circuit breaker's contacts.
Cooking refers to the slow separation of the contacts when the circuit breaker is opened under load.
Crawling refers to the movement of the contacts due to the presence of small currents even when the circuit breaker is in the closed position.
I applied via Company Website and was interviewed in Jul 2022. There were 2 interview rounds.
posted on 29 Nov 2022
I applied via Walk-in and was interviewed in May 2022. There was 1 interview round.
The capacity of a furnace refers to its heating output, typically measured in BTUs or tons.
Furnace capacity is determined by the amount of heat it can produce.
It is usually measured in BTUs (British Thermal Units) or tons.
Higher capacity furnaces can produce more heat and are suitable for larger spaces.
For example, a furnace with a capacity of 80,000 BTUs can heat a larger area compared to one with a capacity of 40,000
Drive components in CCM department are the parts that enable the motor to function properly.
Drive components include motors, gears, belts, and pulleys.
They work together to transfer power from the motor to the machine.
The components must be properly sized and aligned to ensure efficient operation.
Examples of machines that use drive components include conveyor belts, pumps, and fans.
I applied via Naukri.com and was interviewed before Oct 2021. There were 2 interview rounds.
posted on 19 Aug 2024
I applied via Campus Placement and was interviewed in Jul 2024. There was 1 interview round.
A step up transformer is a type of transformer that increases the voltage level from the input side to the output side.
Consists of more turns on the secondary coil than the primary coil
Used to increase voltage levels for long distance power transmission
Commonly found in power distribution systems and electrical grids
A distribution transformer is a device used to step down high voltage electricity to a lower voltage suitable for use in homes and businesses.
Converts high voltage electricity from power lines to lower voltage for distribution
Commonly used in electrical distribution systems
Helps reduce voltage for safe use in homes and businesses
Can be mounted on poles or placed on the ground
Examples: pole-mounted distribution transfor
An alternator is a device that converts mechanical energy into electrical energy in the form of alternating current.
An alternator is commonly used in vehicles to charge the battery and power the electrical system.
It consists of a rotor, stator, diode rectifier, and voltage regulator.
Alternators produce alternating current (AC) which is then converted to direct current (DC) for use in the vehicle.
They are more efficient...
A synonyms machine is a tool or software that helps find alternative words with similar meanings for a given word.
A synonyms machine can be a thesaurus or a feature in word processing software.
It helps writers and speakers find the right word to convey their message effectively.
Examples include online thesauruses like Thesaurus.com or built-in thesaurus in Microsoft Word.
A hysteresis motor is a type of synchronous motor that operates based on the hysteresis effect in magnetic materials.
Hysteresis motors have a rotor made of a magnetic material with high hysteresis, such as cobalt steel.
They do not require a separate DC excitation like other synchronous motors.
Hysteresis motors are known for their smooth operation and low noise levels.
They are commonly used in applications where precise...
posted on 23 Jan 2025
I was interviewed before Jan 2024.
posted on 4 Jan 2023
Home load of a power plant is received through a distribution network.
Home load is received from the power plant through a distribution network.
The power plant generates electricity and sends it to a substation.
The substation then distributes the electricity to homes through power lines.
The distribution network ensures that the electricity reaches each home efficiently.
Examples of distribution networks include overhead
A blackout condition refers to a complete loss of electrical power in a specific area or across a larger region.
Blackouts can be caused by various factors such as equipment failure, severe weather conditions, or intentional power cuts.
During a blackout, all electrical devices and systems dependent on electricity cease to function.
Blackouts can last for a few seconds, minutes, hours, or even days depending on the cause ...
posted on 23 Feb 2023
I applied via Walk-in and was interviewed in Jan 2023. There were 2 interview rounds.
posted on 8 Jul 2024
I applied via Walk-in and was interviewed in Jan 2024. There were 2 interview rounds.
Mathematics,reasoning,science
An induction motor works on the principle of electromagnetic induction to generate rotating magnetic fields.
Induction motor has a stator with a set of windings that are connected to an AC power source.
When AC current flows through the stator windings, it creates a rotating magnetic field.
This rotating magnetic field induces current in the rotor windings, causing the rotor to rotate.
The speed of the rotor rotation is sl...
The symbols of logic gates include AND gate (&), OR gate (|), NOT gate (!), XOR gate (^), NAND gate (|), NOR gate (&), and XNOR gate (=).
AND gate symbol: &
OR gate symbol: |
NOT gate symbol: !
XOR gate symbol: ^
NAND gate symbol: |
NOR gate symbol: &
XNOR gate symbol: =
I applied via Company Website and was interviewed in Feb 2022. There was 1 interview round.
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