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I applied via Company Website and was interviewed in Aug 2024. There was 1 interview round.
A solar inverter is a device that converts the DC electricity generated by solar panels into AC electricity for use in homes and businesses.
Converts DC electricity from solar panels to AC electricity
Allows for use of solar energy in homes and businesses
Helps manage and optimize solar power production
Examples: SMA Solar Inverters, Enphase Microinverters
Maintenance ensures equipment, machinery, or systems are kept in good working condition to prevent breakdowns and ensure optimal performance.
Prevent breakdowns and extend equipment lifespan
Ensure optimal performance and efficiency
Reduce safety risks and downtime
Save costs in the long run by avoiding major repairs or replacements
Protection of power transformer involves implementing measures to prevent damage or failure of the transformer due to various factors.
Protection relays are used to detect abnormal conditions and isolate the transformer from the system.
Overcurrent protection is used to prevent damage from excessive current flow.
Differential protection compares the current entering and leaving the transformer to detect internal faults.
Te...
Relays are devices that act as switches to control electrical circuits. They come in various types with different functions.
Electromechanical relays: use electromagnets to mechanically operate the switch
Solid-state relays: use semiconductor devices to switch the circuit on and off
Time delay relays: introduce a time delay before switching the circuit
Overload relays: protect electrical circuits from overloads by disconne...
Transformer testing includes routine tests, type tests, and special tests to ensure proper functioning and safety.
Routine tests: include insulation resistance, turns ratio, winding resistance, and polarity tests.
Type tests: include temperature rise, short-circuit withstand, impulse voltage, and dielectric tests.
Special tests: include noise level, partial discharge, and harmonics tests.
Testing is crucial to ensure trans...
I applied via Naukri.com and was interviewed in May 2024. There were 2 interview rounds.
PR indicates Project Report in the context of construction and engineering projects.
PR stands for Project Report, which is a detailed document outlining the progress, status, and key information about a specific project.
Project Reports are essential for tracking project milestones, budget, resources, and overall performance.
They often include information on project scope, objectives, timelines, risks, and mitigation st...
Cuf indicates the cubic feet of a material or space.
Cuf is an abbreviation for cubic feet.
It is commonly used in construction and engineering to measure volume.
For example, when ordering concrete for a project, the quantity may be specified in cuf.
PA indicates Public Address.
PA system is used for making announcements or addressing a large group of people.
It is commonly used in public spaces like airports, train stations, and stadiums.
PA systems can also be used in schools, offices, and other institutions for communication purposes.
DFIG stands for Doubly Fed Induction Generator, while non-DFIG refers to generators that do not have this feature.
DFIG has two sets of windings - one connected to the grid and the other to a converter, allowing for variable speed operation.
Non-DFIG generators do not have this dual winding feature and typically operate at fixed speeds.
DFIG systems are more flexible and efficient in capturing wind energy compared to non-...
There are typically 2 PCH cards in a wind turbine generator (WTG).
Most WTGs have 2 PCH cards for redundancy and reliability.
PCH cards are responsible for monitoring and controlling various aspects of the turbine.
Having 2 PCH cards allows for one to take over in case of failure in the other.
IGBT stands for Insulated Gate Bipolar Transistor, a semiconductor device used for switching power in electronic devices.
IGBT is a type of power semiconductor device that combines the high efficiency of a MOSFET with the high current and low saturation voltage capability of a bipolar transistor.
It is commonly used in applications such as motor drives, inverters, and power supplies.
IGBT operates by controlling the volta...
Param Renewable Energy interview questions for popular designations
I applied via Naukri.com and was interviewed in Dec 2023. There were 2 interview rounds.
PR Indicate stands for Permanent Reference Indicate. It is a benchmark point used for measurements and alignments in construction projects.
PR Indicate is a fixed point of reference used by site engineers for accurate measurements and alignments.
It is typically a permanent fixture on the site, such as a benchmark or a known point on a building.
PR Indicate helps ensure consistency and accuracy in construction work.
For ex...
CUF stands for Coefficient of Utilization Factor, which is a measure of the efficiency of a lighting system in distributing light to a given area.
CUF is used in lighting design to determine how effectively a lighting fixture illuminates a space.
It is calculated by dividing the illuminance at a specific point on a work plane by the illuminance directly below the fixture.
A higher CUF indicates better light distribution a...
Get interview-ready with Top Param Renewable Energy Interview Questions
PR stands for Public Relations and CUF stands for Cubic Feet.
PR in engineering can also stand for Permanent Resident, but in this context it likely refers to Public Relations.
CUF is a unit of measurement for volume, commonly used in construction and engineering.
PR is important for maintaining good relationships with clients and stakeholders.
CUF is used to measure the volume of materials like concrete or soil on a const
PR performance ratio and capacity utilization factor are key metrics used to assess the efficiency and effectiveness of a site engineer's work.
PR performance ratio measures the ratio of planned work to actual work completed, indicating how well the engineer is sticking to the project schedule.
Capacity utilization factor measures how efficiently resources are being used on a project, helping to identify areas for improv...
I applied via Referral and was interviewed before Nov 2022. There was 1 interview round.
A solar system is a collection of planets, moons, asteroids, comets, and other celestial bodies that orbit around a star.
The solar system consists of eight planets, including Earth, and their moons.
The sun is at the center of the solar system and provides light and heat to the planets.
The solar system also contains dwarf planets, such as Pluto, and various other objects like asteroids and comets.
The study of the solar ...
There are three types of solar panels: monocrystalline, polycrystalline, and thin-film.
Monocrystalline panels are made from a single silicon crystal and are the most efficient.
Polycrystalline panels are made from multiple silicon crystals and are less expensive than monocrystalline panels.
Thin-film panels are made from a thin layer of photovoltaic material and are the least efficient but also the least expensive.
Other ...
A multimeter is an electronic device used to measure voltage, current, and resistance.
Multimeter is a combination of ammeter, voltmeter, and ohmmeter.
It can measure AC/DC voltage, current, resistance, capacitance, frequency, and temperature.
It has two probes, red for positive and black for negative, to connect to the circuit.
It has a display screen to show the measured values.
It is an essential tool for electrical and ...
I applied via Referral and was interviewed in Apr 2022. There were 2 interview rounds.
Performance ratio is a metric used to measure the efficiency of a solar panel system.
Performance ratio is calculated by dividing the actual energy output of a solar panel system by the theoretical energy output.
It takes into account factors such as temperature, shading, and panel degradation.
A higher performance ratio indicates a more efficient system.
For example, if a solar panel system has an actual energy output of ...
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