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A power system is a network of electrical components used to generate, transmit, and distribute electrical power.
Power systems consist of power plants, transformers, transmission lines, and distribution networks.
They are designed to deliver electricity from power plants to consumers.
Power systems can be categorized into three main types: generation, transmission, and distribution.
Examples of power systems include the e...
The formula for I squared R is used to calculate the power dissipated in a resistor.
I squared R is equal to the current (I) squared multiplied by the resistance (R)
It is commonly used in electrical engineering to determine the power loss in a resistor
For example, if the current flowing through a resistor is 2A and the resistance is 5 ohms, the power dissipated can be calculated as (2^2) * 5 = 20 watts
A rectifier is an electrical device that converts alternating current (AC) to direct current (DC).
Rectifiers are commonly used in power supplies to convert AC voltage to DC voltage.
They consist of diodes that allow current to flow in only one direction.
Rectifiers are used in various applications such as battery charging, electroplating, and welding.
Examples of rectifiers include half-wave rectifiers, full-wave rectifie
A transformer is an electrical device that transfers electrical energy from one circuit to another through electromagnetic induction.
Transformers are used to increase or decrease the voltage of an alternating current (AC) power supply.
They consist of two coils of wire, called the primary and secondary, wrapped around a magnetic core.
When an AC current flows through the primary coil, it creates a magnetic field that ind...
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I applied via Referral and was interviewed before Jul 2021. There was 1 interview round.
I applied via Company Website and was interviewed in Sep 2021. There were 3 interview rounds.
I applied via Company Website and was interviewed in Feb 2022. There were 2 interview rounds.
I applied via Naukri.com and was interviewed in Dec 2020. There were 4 interview rounds.
VCB, SF6, CT, PT, LA are all electrical equipment used in power systems.
VCB stands for Vacuum Circuit Breaker and is used for switching and protection of electrical power systems.
SF6 is a gas used as an insulating medium in high voltage electrical equipment such as circuit breakers, switchgear, and transformers.
CT stands for Current Transformer and is used to measure electrical current in power systems.
PT stands for Po...
Copper and aluminum are commonly used conductors in transmission.
Copper is an excellent conductor due to its high electrical conductivity.
Aluminum is also widely used as it is lightweight and cost-effective.
Other conductors like silver and gold are rarely used due to their high cost.
Copper-clad steel conductors are used in specific applications where strength is required.
Different types of tests related to transformers include routine tests, type tests, and special tests.
Routine tests are performed on every transformer and include measurement of winding resistance, insulation resistance, and voltage ratio.
Type tests are performed on a sample transformer to verify its design and include temperature rise test, impulse test, and short-circuit test.
Special tests are performed on transforme...
Different types of faults refer to the various abnormalities that can occur in an electrical system.
Short circuit fault
Open circuit fault
Ground fault
Overvoltage fault
Undervoltage fault
Overcurrent fault
Undercurrent fault
Relays are switches that open and close circuits electromechanically or electronically. There are various types of relays.
Electromechanical relays
Solid-state relays
Reed relays
Polarized relays
Time-delay relays
Overload protection relays
Mercury-wetted relays
Latching relays
Machine tool relays
Thermal relays
I applied via Walk-in and was interviewed in Feb 2022. There were 3 interview rounds.
I applied via Walk-in and was interviewed in Jul 2023. There were 2 interview rounds.
To protect a transformer, measures such as overcurrent protection, temperature monitoring, and proper grounding should be implemented. VFD stands for Variable Frequency Drive, a device used to control the speed of an electric motor.
Implement overcurrent protection to prevent excessive current flow through the transformer.
Monitor the temperature of the transformer using temperature sensors to prevent overheating.
Ensure ...
I applied via Referral and was interviewed in Jun 2023. There were 2 interview rounds.
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