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I applied via Naukri.com and was interviewed in Jan 2024. There was 1 interview round.
A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.
Consists of two coils of wire (primary and secondary) wrapped 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
A current transformer is a type of instrument transformer used to measure alternating current.
Used to step down high currents to a lower, more manageable level for measurement
Consists of a primary winding and a secondary winding
Secondary winding is connected to measuring instruments or protective relays
Provides accurate current measurement without affecting the main circuit
Ideal transformer is theoretical with no losses, while practical transformer has losses due to resistance, leakage flux, etc.
Ideal transformer has no losses, while practical transformer has losses due to resistance, leakage flux, hysteresis, and eddy currents
Ideal transformer has infinite efficiency, while practical transformer has efficiency less than 100%
Ideal transformer has no voltage drop, while practical transfor...
Voltage is the difference in electric potential between two points in a circuit, measured in volts.
Voltage is the force that pushes electric current through a circuit.
It is measured in volts (V).
Higher voltage means more potential energy for electrons to flow.
Voltage can be compared to water pressure in a pipe - higher pressure (voltage) means faster flow (current).
Turn ratio is the ratio of the number of turns in the primary winding to the number of turns in the secondary winding of a transformer.
Turn ratio determines the voltage transformation ratio in a transformer.
It is calculated by dividing the number of turns in the primary winding by the number of turns in the secondary winding.
For example, if a transformer has 100 turns in the primary winding and 200 turns in the seconda
The emf equation of a transformer relates the induced voltage to the number of turns in the primary and secondary coils.
The emf equation of a transformer is given by: E = N*dΦ/dt, where E is the induced voltage, N is the number of turns, and dΦ/dt is the rate of change of magnetic flux.
This equation shows that the induced voltage in a transformer is directly proportional to the number of turns in the coils and the rate...
Current is the flow of electric charge in a circuit.
Current is measured in Amperes (A).
It is the rate of flow of electric charge past a point in a circuit.
Current can be either direct current (DC) or alternating current (AC).
Examples: A light bulb draws current from a power source to produce light. A fan motor requires current to spin.
A potential transformer is a type of instrument transformer used to step down high voltage to a lower, safer voltage for measurement or control purposes.
Used to step down high voltage to a lower voltage for measurement or control purposes
Provides accurate voltage measurements for meters and relays
Commonly used in power systems for protection and metering applications
Inductance is the property of an electrical circuit that opposes changes in current flow.
Inductance is measured in Henrys (H)
It is caused by the magnetic field generated when current flows through a conductor
Inductors are components that are designed to have a specific inductance value
Inductance is used in circuits to store energy in the form of a magnetic field
Capacitance is the ability of a system to store an electric charge.
Capacitance is measured in farads (F).
It is the ability of a capacitor to store energy in an electric field.
Capacitance depends on the geometry of the capacitor and the dielectric material between the plates.
Capacitance is calculated as C = Q/V, where C is capacitance, Q is charge, and V is voltage.
The unit of inductor is Henry (H)
The unit of inductor is named after American scientist Joseph Henry
It is represented by the symbol 'H'
1 Henry is equal to 1 volt-second per ampere
Underground cables typically have multiple layers for insulation and protection.
Underground cables usually have three layers: conductor, insulation, and protective sheath
The conductor layer carries the electrical current
The insulation layer prevents leakage of current and protects against environmental factors
The protective sheath provides additional protection from moisture, chemicals, and physical damage
Information in electrical generation distribution working
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Tata Steel interview questions for designations
I applied via Naukri.com
Aptitude, Reasoning, General Knowledge and Technical domain
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I applied via Campus Placement and was interviewed before May 2022. There were 2 interview rounds.
Capacitance is the ability of a body to store an electric charge. Inductance is the ability of a coil to store energy in a magnetic field.
Capacitance is measured in Farads (F)
Capacitors are used to store energy in electronic circuits
Inductance is measured in Henrys (H)
Inductors are used in electronic circuits to store energy in a magnetic field
Both capacitance and inductance are important in AC circuits
Different types of cables used for transmissions include coaxial, twisted pair, fiber optic, and ribbon cables.
Coaxial cables are used for high-frequency transmissions and have a copper core surrounded by insulation and a braided shield.
Twisted pair cables are used for low-frequency transmissions and have two insulated copper wires twisted together.
Fiber optic cables use light to transmit data and are made of glass or ...
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posted on 5 Apr 2022
I applied via Walk-in and was interviewed in Mar 2022. There was 1 interview round.
posted on 26 Mar 2025
I appeared for an interview before Mar 2024, where I was asked the following questions.
An 11kV transmission system is a medium voltage network used for distributing electrical power efficiently over short to medium distances.
Voltage Level: 11kV is considered a medium voltage level, commonly used in distribution networks.
Applications: Used for supplying power to industrial plants, commercial buildings, and substations.
Components: Includes transformers, circuit breakers, and overhead or underground cables.
...
AC motors use alternating current, while DC motors use direct current, differing in operation and applications.
AC motors are powered by alternating current, which changes direction periodically.
DC motors operate on direct current, providing a constant voltage and current flow.
AC motors are commonly used in industrial applications, such as fans and pumps.
DC motors are often found in battery-operated devices, like toys a...
I applied via Walk-in and was interviewed in Nov 2021. There was 1 interview round.
posted on 21 Dec 2022
I applied via Approached by Company and was interviewed in Nov 2022. There were 3 interview rounds.
After job description will get relateble test
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