Jindal Steel and Power Diploma Electrical Engineer Interview Questions, Process, and Tips

Q1. All control wireing and power wireing all dcs plc work going on
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Q2. Automation rooling mill division jamshedpur
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Q1. I am electrical engineer working on it and found in the same as par required production okay for me to get the same as the motor is overloaded due to the machine running ok but
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Q2. Automation work
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I am electrical engineer working on it jamshedpur jharkhand steel strips wheel limited jamshedpur jharkhand

Q1. What is the conductor
Ans. 
A conductor is a material that allows the flow of electric current.
• Conductors have low resistance to the flow of electricity.

• Metals like copper and aluminum are commonly used as conductors.

• Conductors are used in electrical wiring, circuits, and transmission lines.
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Q2. What is the semi conductor
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A semiconductor is a material that has electrical conductivity between that of a conductor and an insulator.
• Semiconductors have a band gap that allows them to conduct electricity under certain conditions.

• Common semiconductor materials include silicon, germanium, and gallium arsenide.

• Semiconductors are used in electronic devices such as transistors, diodes, and integrated circuits.
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Q3. What is the current
Ans. Current is the rate at which electrons flow past a point in an electrical circuit
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Q4. What is the electrical
Ans. 
The electrical resistance is a measure of how much an object opposes the flow of electric current.
• Electrical resistance is measured in ohms (Ω).

• It is determined by the material and dimensions of an object.

• Higher resistance means less current flow.

• Example: A light bulb has a high resistance, which causes it to glow when current passes through.
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Q1. What is turbine
Ans. 
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
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Q2. What is blast furnace
Ans. 
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
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Q3. What is transformer
Ans. 
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...read more
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Q4. Types of transformer
Ans. 
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
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Q5. Working principle of Transformers
Ans. 
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 ...read more
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Q6. What is resistance
Ans. 
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.
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Q7. What is diode types of diode
Ans. 
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...read more
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Q8. What is power factor
Ans. 
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...read more
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Q9. What is DC motor
Ans. 
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
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Q10. Difference between AC and DC motor
Ans. 
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...read more
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Q11. What is electromagnetic field
Ans. 
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
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Q12. Types of motor and working principles
Ans. 
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...read more
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Q13. What is V F D
Ans. 
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...read more
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Q14. What is earthing
Ans. 
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...read more
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Q15. Types of motor and working principle
Ans. 
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...read more
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Q16. What is contactor
Ans. 
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...read more
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Q17. What is cooking and crawling
Ans. 
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.
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Q1. AC current kya hai
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Q2. DC current kya hai
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Q3. DC current direct current hai
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Q4. DC direct current hai
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Q5. AC alternator current hai
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Q1. Why job requirement
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Q2. Electrical engineering department
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Q1. Power transformer and basic electrical
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Q2. Transformers and current transformer
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Q1. What is Cooling Tower .?
Ans. 
A cooling tower is a specialized heat exchanger in which air and water are brought into direct contact to reduce the water's temperature.
• Cooling towers are commonly used in industrial and HVAC systems to remove heat from a process or building.

• They work by evaporating a small portion of the water to remove heat from the remaining water stream.

• The cooled water is then circulated back into the system to absorb more heat.

• C...read more
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Q2. How many Types of power Plant .?
Ans. 
There are several types of power plants including thermal, hydroelectric, nuclear, solar, wind, and geothermal.
• Thermal power plants use fossil fuels like coal, oil, or natural gas to generate electricity.

• Hydroelectric power plants harness the energy of flowing water to generate electricity.

• Nuclear power plants use nuclear reactions to produce electricity.

• Solar power plants convert sunlight into electricity using photov...read more
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Q3. What is transformer.?
Ans. 
A transformer is a static electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
• Consists of two coils of wire (primary and secondary) wound around a core

• Primary coil receives electrical energy and creates a magnetic field

• Magnetic field induces a voltage in the secondary coil, transferring energy

• Used to step up or step down voltage in power distribution systems

• ...read more
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Q4. What is Resistance.?
Ans. 
Resistance is the opposition to the flow of electric current in a circuit.
• Resistance is measured in ohms (Ω).

• It is caused by the collisions of electrons with atoms in a conductor.

• Higher resistance leads to lower current flow in a circuit.

• Resistance can be affected by factors like material, length, and temperature.

• Examples of high resistance materials include rubber and glass.

• Examples of low resistance materials include
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