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Tata Power Lead Engineer Interview Questions and Answers
13 Interview questions
Transformers are tested using various methods to ensure efficiency, safety, and performance in electrical systems.
1. Insulation Resistance Test: Measures the insulation quality to prevent electrical leakage.
2. Transformer Turns Ratio (TTR) Test: Compares the primary and secondary winding turns to ensure correct voltage transformation.
3. Power Factor Test: Assesses the dielectric losses in the insulation system.
4. ...
Turbines convert kinetic energy from fluids into mechanical energy for power generation.
Kinetic energy from moving fluids (water, steam, gas) is transformed into mechanical energy.
In hydro turbines, water flow drives the blades, generating electricity.
Steam turbines convert thermal energy from steam into mechanical energy.
Gas turbines use high-speed gas flow to turn the turbine and produce power.
Isolators prevent electrical current flow, while insulators resist it, ensuring safety and efficiency in electrical systems.
Isolators are devices that disconnect circuits, ensuring no current flows during maintenance.
Insulators are materials that resist the flow of electricity, like rubber or glass.
Example of an isolator: a switch that separates a circuit from the power source.
Example of an insulator: plastic coat...
Photovoltaic cells convert sunlight into electricity using the photovoltaic effect, primarily through semiconductor materials.
Photovoltaic cells are made of semiconductor materials like silicon.
When sunlight hits the cell, photons excite electrons, creating electron-hole pairs.
The electric field in the cell drives the electrons towards the conductive plates, generating direct current (DC).
Inverters convert DC to a...
Power generation involves converting energy sources into electricity, followed by distribution to consumers through a network.
1. Energy Sources: Power generation can come from fossil fuels (coal, natural gas), nuclear, or renewable sources (solar, wind, hydro).
2. Generation: Power plants convert energy into electricity using turbines, generators, and other technologies.
3. Transmission: High-voltage transmission li...
What are the roles & responsibilities of a Lead Engineer at Tata Power?
Read full roles & responsibilities 
Angular project architecture involves organizing code into modules, components, services, and directives for a scalable and maintainable application.
Angular applications are organized into modules, which group related components, directives, and services together.
Components are the building blocks of Angular applications, representing different parts of the UI.
Services are used for reusable business logic and data...
Tata Power HR Interview Questions
Double bus system is important for ensuring redundancy and reliability in power distribution.
Enhances reliability by providing backup in case of failure in one bus
Allows for maintenance work to be carried out on one bus while the other remains operational
Reduces the risk of power outages and downtime
Commonly used in critical infrastructure such as hospitals, data centers, and industrial facilities
Outages for line/switchyard are managed by the load dispatch centre through coordination and communication.
Outages are scheduled in advance to minimize impact on the grid and consumers.
Load dispatch centre coordinates with the concerned authorities to plan and execute the outage.
Alternative arrangements are made to ensure continuity of power supply during the outage.
Regular updates are provided to stakeholders reg...
The resistance value of tripping & closing coil of VCB varies depending on the manufacturer and model.
The resistance value can be found in the manufacturer's manual or datasheet.
It is important to use the correct resistance value to ensure proper functioning of the VCB.
The resistance value may also vary depending on the voltage rating of the VCB.
For example, the ABB VD4 VCB has a tripping coil resistance of 50-60 ...
The contact resistance of VCB is typically very low.
VCB stands for Vacuum Circuit Breaker.
The contact resistance is the resistance between the contacts of the breaker when it is closed.
The contact resistance of VCB is typically in the range of micro-ohms.
Low contact resistance is important for efficient operation of the breaker.
High contact resistance can cause overheating and damage to the breaker.
The contact res...
Tata Power Lead Engineer Interview Experiences
13 interviews found
Anonymous
I applied via Campus Placement
Prepare aptitude as we are generally prepare for Competitive exam.
Focus on Maths and English.
(2 Questions)
- Q1. Prepare all the basics Technical questions for the respective subject for which trade you are applying.
- Q2. Always be confident and honest about your answer. If you don't know the answer, accept it & try to manage diplomatically. Don't be fake.
(1 Question)
- Q1. All the basics HS questions like your introduction and some hypothetical situation you may receive from the HR.
Interview Preparation Tips
I applied via Approached by Company and was interviewed in May 2024. There was 1 interview round.
(4 Questions)
- Q1. Experience details
- Q2. How outages for line / switchyard is taken, wrt load dispatch centre
- Ans.
Outages for line/switchyard are managed by the load dispatch centre through coordination and communication.
Outages are scheduled in advance to minimize impact on the grid and consumers.
Load dispatch centre coordinates with the concerned authorities to plan and execute the outage.
Alternative arrangements are made to ensure continuity of power supply during the outage.
Regular updates are provided to stakeholders regardin...
- Q3. What is importance of having double bus system
- Ans.
Double bus system is important for ensuring redundancy and reliability in power distribution.
Enhances reliability by providing backup in case of failure in one bus
Allows for maintenance work to be carried out on one bus while the other remains operational
Reduces the risk of power outages and downtime
Commonly used in critical infrastructure such as hospitals, data centers, and industrial facilities
- Q4. Which is the majour fault attended by you in your current job
Interview Preparation Tips
Aptitude Questions ,General Math Reasoning General English , Conceptual Questions based on software Engineering
(1 Question)
- Q1. Why we should Hire You
(1 Question)
- Q1. Explain Angular Project Achitecture
- Ans.
Angular project architecture involves organizing code into modules, components, services, and directives for a scalable and maintainable application.
Angular applications are organized into modules, which group related components, directives, and services together.
Components are the building blocks of Angular applications, representing different parts of the UI.
Services are used for reusable business logic and data mani...
Skills evaluated in this interview
Amit Kumar Jana
Selected
I appeared for an interview before Mar 2024.
Online aptitude test
Online aptitude test
(2 Questions)
- Q1. Smart metering and operation & maintenance of sub station
- Ans.
Smart metering enhances energy management, while O&M of substations ensures reliability and efficiency in power distribution.
Smart metering allows real-time monitoring of energy consumption, enabling better demand management.
Advanced metering infrastructure (AMI) can facilitate remote readings and reduce operational costs.
O&M of substations involves regular inspections, maintenance schedules, and upgrades to en...
- Q2. Smart metering project and o&m work activity
(1 Question)
- Q1. Salary discussed
Interview Preparation Tips
Selected
I appeared for an interview before Apr 2024, where I was asked the following questions.
- Q1. What is the difference between an isolator and an insulator?
- Ans.
Isolators prevent electrical current flow, while insulators resist it, ensuring safety and efficiency in electrical systems.
Isolators are devices that disconnect circuits, ensuring no current flows during maintenance.
Insulators are materials that resist the flow of electricity, like rubber or glass.
Example of an isolator: a switch that separates a circuit from the power source.
Example of an insulator: plastic coating o...
- Q2. What type of energy conversion occurs in a turbine?
- Ans.
Turbines convert kinetic energy from fluids into mechanical energy for power generation.
Kinetic energy from moving fluids (water, steam, gas) is transformed into mechanical energy.
In hydro turbines, water flow drives the blades, generating electricity.
Steam turbines convert thermal energy from steam into mechanical energy.
Gas turbines use high-speed gas flow to turn the turbine and produce power.
- Q3. What is the process of solar power generation?
- Ans.
Solar power generation converts sunlight into electricity using photovoltaic cells or solar thermal systems.
Photovoltaic (PV) cells convert sunlight directly into electricity through the photovoltaic effect.
Solar thermal systems use sunlight to heat a fluid, which then produces steam to drive a turbine for electricity generation.
In PV systems, multiple cells are combined into panels, which can be installed on rooftops ...
- Q4. What is the working principle of photovoltaic cells?
- Ans.
Photovoltaic cells convert sunlight into electricity using the photovoltaic effect, primarily through semiconductor materials.
Photovoltaic cells are made of semiconductor materials like silicon.
When sunlight hits the cell, photons excite electrons, creating electron-hole pairs.
The electric field in the cell drives the electrons towards the conductive plates, generating direct current (DC).
Inverters convert DC to altern...
- Q5. What is the entire process of power generation and distribution?
- Ans.
Power generation involves converting energy sources into electricity, followed by distribution to consumers through a network.
1. Energy Sources: Power generation can come from fossil fuels (coal, natural gas), nuclear, or renewable sources (solar, wind, hydro).
2. Generation: Power plants convert energy into electricity using turbines, generators, and other technologies.
3. Transmission: High-voltage transmission lines c...
- Q6. What are the testing methods and working principles of transformers?
- Ans.
Transformers are tested using various methods to ensure efficiency, safety, and performance in electrical systems.
1. Insulation Resistance Test: Measures the insulation quality to prevent electrical leakage.
2. Transformer Turns Ratio (TTR) Test: Compares the primary and secondary winding turns to ensure correct voltage transformation.
3. Power Factor Test: Assesses the dielectric losses in the insulation system.
4. Sweep...
I appeared for an interview before Apr 2024, where I was asked the following questions.
- Q1. Safety procedures
- Q2. Technical knowledge
- Ans.
Technical knowledge encompasses understanding systems, tools, and methodologies relevant to engineering projects.
Familiarity with programming languages like Python, Java, or C++ for software development.
Experience with version control systems such as Git for collaborative coding.
Understanding of software development methodologies like Agile or Scrum.
Knowledge of cloud platforms like AWS or Azure for deploying applicati...
Selected
I applied via Campus Placement and was interviewed before Jul 2023. There was 1 interview round.
In apti test there 2 setion one is technical and an otherone is non technical.
Interview Preparation Tips
Interview Questionnaire
3 Questions
- Q1. 1.What is the contact resistance of VCB.?
- Q2. What is the resistance value of tripping & closing coil of vcb?
- Q3. The minimum hight at which the safety belt should be used
- Ans.
The minimum height at which the safety belt should be used is determined by the height of the individual and the specific safety regulations in place.
The minimum height requirement for safety belt usage varies depending on the country and jurisdiction.
In the United States, for example, the minimum height for safety belt usage is typically around 4 feet 9 inches (145 cm).
Other factors such as age, weight, and type of ve...
Selected
I applied via Campus Placement and was interviewed before Jun 2022. There were 3 interview rounds.
Online Test conducted for all the candidates
(1 Question)
- Q1. Basic Electrical, Substation, Willingness to join the company, Personal Information.
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