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OLTC (On Load Tap Changer) is a device used in transformers to regulate the voltage output by changing the number of turns in the transformer winding.
OLTC is used to adjust the voltage output of a transformer while it is in operation.
It works by changing the tap position on the transformer winding to increase or decrease the number of turns.
This allows for voltage regulation without interrupting the power supply.
OLTC c...
Different types of motor starters include DOL, star-delta, and soft starters, each with unique working principles.
Direct Online (DOL) starter provides full voltage to the motor at start, suitable for small motors.
Star-delta starter initially connects the motor in star configuration for reduced starting current, then switches to delta configuration.
Soft starters gradually increase voltage to the motor, reducing starting...
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Tata Steel interview questions for popular designations
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I applied via Approached by Company and was interviewed in Mar 2024. There was 1 interview round.
Electric motors can be classified into various types based on their construction and operation.
Types of electric motors include DC motors, AC motors, synchronous motors, asynchronous motors, brushed motors, brushless motors, etc.
DC motors operate on direct current and are commonly used in applications like electric vehicles and robotics.
AC motors operate on alternating current and are widely used in household appliance...
MCB stands for Miniature Circuit Breaker, used for electrical protection in homes and buildings.
MCB is a type of circuit breaker that automatically switches off electrical circuits during abnormal conditions.
It is commonly used in homes, buildings, and electrical panels to protect against overcurrent and short circuits.
MCBs come in different ratings such as 6A, 10A, 16A, etc., to suit different electrical loads.
They ar...
RCCB stands for Residual Current Circuit Breaker. It is used in electrical systems to protect against electric shock and fire hazards.
RCCB is a type of circuit breaker that detects imbalances in the electrical current flowing through a circuit.
It quickly disconnects the power supply when it detects a leakage current, which could indicate a fault or electric shock hazard.
RCCBs are commonly used in residential, commercia...
There are different types of earthing such as TN, TT, and IT. The voltage of earthing can vary depending on the type of earthing system.
Types of earthing include TN, TT, and IT
TN system has a voltage of 230V to earth
TT system has a voltage of 400V to earth
IT system has a voltage of 400V to earth
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I applied via Naukri.com and was interviewed in Mar 2024. There were 3 interview rounds.
Personality test, a set of 50 questions online within 1 hour.
Dust control equipments and procedures are essential for maintaining a safe and clean work environment.
Implementing dust control measures such as using dust collectors, wetting down surfaces, and using ventilation systems
Regularly inspecting and maintaining dust control equipment to ensure effectiveness
Providing proper training to employees on dust control procedures and the importance of maintaining a clean work envir
I am impressed by your company's reputation for innovation and commitment to employee development.
I admire your company's track record of success in the industry
I am excited about the opportunity to contribute to a dynamic and forward-thinking team
I value the emphasis your organization places on professional growth and advancement
I applied via Approached by Company and was interviewed in Mar 2024. There was 1 interview round.
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.
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.
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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