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I applied via Approached by Company and was interviewed in Apr 2023. There were 3 interview rounds.
3 phase power formulae involve calculations for power in a 3-phase electrical system.
The formula for 3-phase power is P = √3 x V x I x cos(θ)
Where P is power in watts, V is voltage in volts, I is current in amps, and θ is the phase angle
Power factor (cos(θ)) accounts for the phase difference between voltage and current
In balanced 3-phase systems, the total power is the sum of the power in each phase
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posted on 27 Jan 2025
Diesel Generator: A Reliable Power Source
A diesel generator is a self-contained power generating unit that combines a diesel engine with an electric generator (often an alternator). It's a versatile and widely used source of electricity, particularly in situations where a reliable power supply is crucial.
How Diesel Generators Work
* Diesel Engine: The diesel engine, fueled by diesel fuel, acts as the prime mover. It converts the chemical energy of the fuel into mechanical energy through combustion.
* Electric Generator: The mechanical energy from the engine is transferred to the generator, which converts it into electrical energy. This electrical energy can then be used to power various appliances and equipment.
Applications of Diesel Generators
* Backup Power: Diesel generators are commonly used as backup power sources for homes, businesses, hospitals, and critical infrastructure during power outages.
* Remote Locations: In areas with limited or no access to the grid, diesel generators provide a reliable source of electricity for various applications.
* Construction Sites: Diesel generators power tools and equipment on construction sites, ensuring work can continue even in remote locations.
* Off-Grid Living: Individuals living off the grid often rely on diesel generators for their electricity needs.
* Data Centers: Diesel generators provide backup power to ensure the continuous operation of critical data centers.
Advantages of Diesel Generators
* Reliability: Diesel engines are known for their durability and reliability, making them suitable for demanding applications.
* Fuel Efficiency: Modern diesel engines offer excellent fuel efficiency, reducing operating costs.
* Wide Power Range: Diesel generators are available in a wide range of sizes and power capacities, catering to various needs.
* Easy Maintenance: Diesel generators are relatively easy to maintain and service.
Disadvantages of Diesel Generators
* Noise: Diesel generators can be noisy, which may be a concern in certain settings.
Panel and protection systems are essential components in electrical engineering for controlling and safeguarding electrical circuits.
Different types of panels include distribution panels, control panels, and instrumentation panels.
Protection systems include overcurrent protection, earth fault protection, and differential protection.
Panels are used to house electrical components and provide a safe environment for operat...
posted on 11 Oct 2024
I applied via Company Website and was interviewed in Apr 2024. There was 1 interview round.
posted on 10 Jul 2024
posted on 10 Nov 2024
posted on 28 Jun 2024
I applied via Company Website and was interviewed in Mar 2023. There were 3 interview rounds.
Normal introduction and interview
There are various types of electrical motors including AC motors, DC motors, synchronous motors, and induction motors.
AC motors: commonly used in household appliances and industrial applications
DC motors: used in applications where speed control is important, such as in electric vehicles
Synchronous motors: used in applications where precise speed control is required, such as in clocks and timers
Induction motors: widely...
Protection of transformer involves measures to prevent damage from overcurrent, overvoltage, and overheating.
Use overcurrent protection devices such as fuses and circuit breakers to prevent damage from excessive current flow.
Install overvoltage protection devices like surge arresters to safeguard against voltage spikes.
Implement temperature monitoring systems to prevent overheating, such as thermal sensors and cooling ...
posted on 25 Oct 2023
I was interviewed in Jul 2022.
HVDC is a technology used to transmit high voltage DC power over long distances. Offshore connections refer to power transmission from offshore wind farms.
HVDC is more efficient than AC transmission over long distances
Offshore connections require specialized equipment and installation techniques
HVDC is used for offshore connections to transmit power from offshore wind farms to the mainland
Examples of HVDC projects incl...
posted on 7 Feb 2022
I applied via Company Website and was interviewed in Jan 2022. There were 2 interview rounds.
based on 1 interview
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