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Power Grid Corporation of India Interview Questions and Answers
49 Interview questions
Foundation work involves preparing the ground and constructing a stable base for buildings or structures.
Conduct a site survey to assess soil conditions and determine the type of foundation needed.
Excavate the area to the required depth, ensuring proper drainage and stability.
Pour concrete footings to support the foundation walls, ensuring they are level and properly aligned.
Construct foundation walls using materi...
A transposition tower is a structure used in electrical transmission to change the phase sequence of power lines.
Transposition towers are used to minimize electrical interference between power lines.
They help in balancing the load across the transmission lines.
An example is the use of transposition in long-distance AC transmission systems.
Transposition can improve voltage regulation and reduce losses.
Transformers primarily deal with reactive power, facilitating voltage transformation in AC systems.
Transformers do not consume active power; they transfer it between circuits.
They mainly handle reactive power, which is essential for voltage regulation.
Example: In a power system, transformers adjust voltage levels to minimize losses.
Transformers can also affect the power factor of a system by managing reactive powe...
PRV stands for Pressure Relief Valve, a safety device designed to protect equipment from overpressure by releasing excess pressure.
PRVs are commonly used in industries such as oil and gas, chemical, and manufacturing.
They are designed to open when the pressure inside a system exceeds a certain set point, allowing the excess pressure to be released.
PRVs help prevent catastrophic failures and protect equipment from ...
A wave trap is a device used in electrical systems to filter out unwanted high-frequency signals.
Wave traps are typically used in power systems to prevent high-frequency currents from flowing back into the system.
They are designed to have a high impedance at the frequency of the unwanted signal, effectively blocking it from passing through.
Wave traps can be installed on transmission lines or connected to transform...
CVT in transmission line works by continuously varying the gear ratio to provide smooth acceleration and optimal engine performance.
CVT uses a belt and pulley system to vary the gear ratio based on engine speed and load
It provides seamless acceleration without the need for traditional gear shifts
CVT allows the engine to operate at its most efficient RPM range for better fuel economy
Examples of vehicles with CVT in...
The ground clearing distance of 220 kv lines is typically around 7 meters.
Ground clearing distance is the minimum distance required between the lowest point of the conductor and the ground.
For 220 kv lines, the ground clearing distance is usually around 7 meters to ensure safety and prevent any contact with the ground.
This distance may vary depending on factors such as terrain, local regulations, and specific desi...
ACs are primarily classified into window, split, portable, and central types, each serving different cooling needs.
Window AC: Installed in a window, suitable for single rooms.
Split AC: Comprises two units (indoor and outdoor), ideal for larger spaces.
Portable AC: Can be moved easily, perfect for temporary cooling.
Central AC: Cools multiple rooms through ducts, used in larger buildings.
AC units typically use refrigerants like R-22 or R-410A for cooling. These gases absorb heat and provide efficient temperature control.
R-22: Commonly used in older AC systems, it's being phased out due to environmental concerns.
R-410A: A more environmentally friendly refrigerant, widely used in modern AC units.
R-32: An emerging refrigerant known for its lower global warming potential.
Refrigerants work by absorbing...
VCB maintenance ensures reliable operation and longevity of vacuum circuit breakers in electrical systems.
Regular inspection of contacts for wear and tear.
Testing insulation resistance to prevent electrical failures.
Cleaning the breaker to remove dust and contaminants.
Checking the operating mechanism for smooth operation.
Verifying the calibration of protective relays.
Power Grid Corporation of India Interview Experiences
67 interviews found
chandan kumar
Selected
I applied via Company Website and was interviewed in Dec 2024. There were 3 interview rounds.
(2 Questions)
- Q1. How to work CVT in transmission line
- Ans.
CVT in transmission line works by continuously varying the gear ratio to provide smooth acceleration and optimal engine performance.
CVT uses a belt and pulley system to vary the gear ratio based on engine speed and load
It provides seamless acceleration without the need for traditional gear shifts
CVT allows the engine to operate at its most efficient RPM range for better fuel economy
Examples of vehicles with CVT include...
- Q2. Working of wave trap
- Ans.
A wave trap is a device used in electrical systems to filter out unwanted high-frequency signals.
Wave traps are typically used in power systems to prevent high-frequency currents from flowing back into the system.
They are designed to have a high impedance at the frequency of the unwanted signal, effectively blocking it from passing through.
Wave traps can be installed on transmission lines or connected to transformers t...
(2 Questions)
- Q1. Testing of transformer
- Ans.
Testing of transformer involves various electrical tests to ensure its performance and safety.
Routine tests include turns ratio test, insulation resistance test, and winding resistance test.
Type tests include temperature rise test, impulse test, and short circuit test.
Special tests may include partial discharge test and noise level test.
Testing is crucial to ensure the transformer meets specifications and standards for...
- Q2. What is PRV
- Ans.
PRV stands for Pressure Relief Valve, a safety device designed to protect equipment from overpressure by releasing excess pressure.
PRVs are commonly used in industries such as oil and gas, chemical, and manufacturing.
They are designed to open when the pressure inside a system exceeds a certain set point, allowing the excess pressure to be released.
PRVs help prevent catastrophic failures and protect equipment from damag...
(2 Questions)
- Q1. About lighting arrester
- Q2. Line shutdown related questions
Interview Preparation Tips
Shift Incharge Engineer Interview Questions asked at other Companies
Anonymous
(3 Questions)
- Q1. Technical questions
- Q2. Any other questions
- Q3. Technical questions any other
Interview Preparation Tips
Selected
I applied via Safları Result
(5 Questions)
- Q1. Transmission 132/220/400 kv
- Q2. Substation maintenance
- Q3. Easy for transmission line
- Q4. Sub station maintenance
- Q5. OLTC Tramsformer
Interview Preparation Tips
Komal Arora
Selected
I applied via LinkedIn and was interviewed in Aug 2024. There was 1 interview round.
(2 Questions)
- Q1. Tell me about yourself for 1 minute
- Ans.
I am a motivated finance student with strong analytical skills and a passion for learning.
Currently pursuing a degree in Finance at XYZ University
Completed internships at ABC Company and gained experience in financial analysis
Proficient in Excel, financial modeling, and data analysis
Strong communication and teamwork skills demonstrated through group projects and extracurricular activities
- Q2. Wy do you want to join powergrid
- Ans.
I want to join PowerGrid because of its reputation for innovation and commitment to sustainable energy solutions.
I am passionate about renewable energy and PowerGrid's focus on sustainable solutions aligns with my values.
I am impressed by PowerGrid's track record of innovation in the energy sector, and I am eager to contribute to their cutting-edge projects.
I believe that PowerGrid offers a dynamic and challenging work...
Interview Preparation Tips
Finance Intern Interview Questions asked at other Companies
Selected
I appeared for an interview in Feb 2025, where I was asked the following questions.
- Q1. What skills do you specialize in?
- Ans.
I specialize in full-stack development, focusing on JavaScript frameworks, cloud computing, and agile methodologies.
Proficient in JavaScript frameworks like React and Angular for building dynamic user interfaces.
Experienced in backend development using Node.js and Express, enabling seamless API integration.
Skilled in cloud services such as AWS and Azure, optimizing application deployment and scalability.
Familiar with a...
- Q2. How many years of experience do you have?
- Q3. What additional qualifications do you possess?
- Q4. In what areas do you have knowledge or expertise?
- Ans.
I have expertise in software development, algorithms, data structures, and web technologies, with a focus on scalable applications.
Proficient in programming languages like Python, Java, and JavaScript.
Experience with web frameworks such as React for front-end and Node.js for back-end development.
Strong understanding of algorithms and data structures, demonstrated through competitive programming.
Familiar with cloud serv...
Interview Preparation Tips
Software Engineer Interview Questions asked at other Companies
chetan
I applied via Campus Placement
(2 Questions)
- Q1. Ac kitne prakar ki hoti h
- Ans.
ACs are primarily classified into window, split, portable, and central types, each serving different cooling needs.
Window AC: Installed in a window, suitable for single rooms.
Split AC: Comprises two units (indoor and outdoor), ideal for larger spaces.
Portable AC: Can be moved easily, perfect for temporary cooling.
Central AC: Cools multiple rooms through ducts, used in larger buildings.
- Q2. Ac m kon c gas Dali jati h
- Ans.
AC units typically use refrigerants like R-22 or R-410A for cooling. These gases absorb heat and provide efficient temperature control.
R-22: Commonly used in older AC systems, it's being phased out due to environmental concerns.
R-410A: A more environmentally friendly refrigerant, widely used in modern AC units.
R-32: An emerging refrigerant known for its lower global warming potential.
Refrigerants work by absorbing heat...
AC Technician Interview Questions asked at other Companies
SARVENDRA SAKET
(2 Questions)
- Q1. Asked questions from Control system
- Q2. Answered as questions were simply related to syllabus only
Executive Trainee Interview Questions asked at other Companies
(1 Question)
- Q1. Grade of concrete
- Ans.
Grade of concrete refers to the strength of the concrete mix design.
Grade of concrete is denoted by the ratio of cement, sand, and aggregates in the mix.
Common grades of concrete include M10, M15, M20, M25, etc.
Higher grade of concrete indicates higher strength and durability.
For example, M20 grade concrete has a mix ratio of 1:1.5:3 (cement:sand:aggregate).
Interview Preparation Tips
Apprenticeship Trainee Interview Questions asked at other Companies
(2 Questions)
- Q1. Tell me about yourself
- Ans.
I am a recent finance graduate with a strong interest in industrial finance. I have completed internships in financial analysis and have a solid understanding of financial principles.
Recently graduated with a degree in finance
Completed internships in financial analysis
Strong interest in industrial finance
Solid understanding of financial principles
- Q2. Basic Accounts, taxation and company law question
Selected
I applied via Approached by Company
(1 Question)
- Q1. Transformer working Principal
- Ans.
Transformer works 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.
When an alternating current flows through the primary coil, it creates a changing magnetic field.
This changing magnetic field induces a voltage in the secondary coil, transferring electrical energy.
Transformers are used to st...
Field Engineer Interview Questions asked at other Companies
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Power Grid Corporation of India Interview FAQs
The duration of Power Grid Corporation of India interview process can vary, but typically it takes about less than 2 weeks to complete.
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Power Grid Corporation of India Interviews By Designations
- Power Grid Corporation of India Field Engineer Interview Questions
- Power Grid Corporation of India Apprentice Trainee Interview Questions
- Power Grid Corporation of India Engineer Interview Questions
- Power Grid Corporation of India Field Supervisor Interview Questions
- Power Grid Corporation of India Assistant Engineer Interview Questions
- Power Grid Corporation of India Electrical Engineer Interview Questions
- Power Grid Corporation of India Electrician Interview Questions
- Power Grid Corporation of India Apprentice Interview Questions
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Power Grid Corporation of India Reviews and Ratings
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|
Field Engineer
206
salaries
|  ₹3.8 L/yr - ₹10 L/yr |
|
Field Supervisor
102
salaries
| ₹4.1 L/yr - ₹6.5 L/yr |
|
Electrical Engineer
60
salaries
| ₹1.8 L/yr - ₹9.5 L/yr |
|
Graduate Apprentice Trainee
60
salaries
| ₹1.8 L/yr - ₹2.8 L/yr |
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Associate Engineer
58
salaries
| ₹2.4 L/yr - ₹5.4 L/yr |
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