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An induction motor starts by applying a rotating magnetic field to the stator windings, inducing a current in the rotor windings.
A rotating magnetic field is created in the stator windings by applying a three-phase AC voltage.
The rotating magnetic field induces a current in the rotor windings, causing the rotor to start rotating.
Once the rotor reaches near-synchronous speed, it will lock into the rotating magnetic fiel...
I applied via Campus Placement and was interviewed in May 2024. There were 2 interview rounds.
Total enf for a certain conditions refers to the total energy consumption for specific circumstances.
Calculate the total energy consumption by summing up the individual energy consumption values for each condition.
Consider factors such as duration, power rating, and efficiency when calculating total energy consumption.
Example: Total energy consumption for a week of running a 100W light bulb for 8 hours a day.
posted on 3 Aug 2024
I applied via Campus Placement and was interviewed in Feb 2024. There were 2 interview rounds.
General topics/current affairs
I am a passionate and experienced software engineer with a background in computer science.
Experienced software engineer
Background in computer science
Passionate about technology
I have worked on various projects including website development, mobile app development, and data analysis.
Developed a responsive e-commerce website using HTML, CSS, and JavaScript
Created a mobile app for tracking fitness goals using React Native
Conducted data analysis on customer feedback to improve product features
posted on 27 Apr 2022
I applied via Newspaper Ad and was interviewed before Apr 2021. There was 1 interview round.
PLC is a programmable logic controller used for automation. SCADA is a supervisory control and data acquisition system. Induction motor is an AC motor.
PLC is used to control industrial processes and machines.
SCADA is used to monitor and control large-scale processes and systems.
Induction motor is a type of AC motor commonly used in industrial applications.
PLC and SCADA are often used together in industrial automation.
I...
posted on 28 May 2022
I applied via LinkedIn and was interviewed before May 2021. There were 2 interview rounds.
Good
posted on 14 Jun 2021
Transformer losses refer to the energy dissipated in a transformer during its operation.
Transformer losses include copper losses and iron losses.
Copper losses occur due to the resistance of the transformer windings.
Iron losses, also known as core losses, occur due to hysteresis and eddy currents in the transformer core.
Copper losses can be minimized by using larger conductor sizes and reducing the resistance of winding...
Neutral is grounded in star connected transformer for safety and to limit voltage rise.
Grounding neutral limits voltage rise in case of unbalanced loads.
It provides a path for fault current to flow, which helps in detecting and isolating faults.
It reduces the risk of electric shock to personnel and damage to equipment.
In some countries, it is a legal requirement to ground the neutral in electrical systems.
Example: In a...
Power is the rate at which energy is transferred, while energy is the ability to do work.
Power is measured in watts, while energy is measured in joules.
Power is the rate at which energy is used or transferred, while energy is the capacity to do work.
A light bulb may have a power rating of 60 watts, but the energy it consumes over time is measured in watt-hours.
Energy can exist in different forms, such as kinetic, poten...
IGBT stands for Insulated Gate Bipolar Transistor, a power semiconductor device used for switching and amplification of electrical power.
IGBT is a three-terminal device with a collector, emitter, and gate.
It combines the advantages of MOSFET and BJT transistors.
It is commonly used in high power applications such as motor drives, power supplies, and renewable energy systems.
IGBTs have low on-state voltage drop and high ...
Relay is an electrically operated switch that uses an electromagnet to mechanically open or close a circuit.
Relays are used to control high voltage or high current circuits with low voltage signals.
They are commonly used in industrial automation, automotive applications, and household appliances.
Relays can be classified into different types based on their construction and operation, such as electromagnetic relays, soli...
CT and PT are connected in circuit to measure current and voltage respectively.
CT is connected in series with the load to measure current
PT is connected in parallel with the load to measure voltage
CT and PT are used together to measure power in a circuit
The ratio of CT and PT is important for accurate measurement
Solar PV modules convert sunlight into electricity using photovoltaic effect.
Solar PV modules consist of multiple solar cells connected in series and parallel.
Each solar cell is made of semiconductor material, usually silicon.
When sunlight hits the solar cell, it excites the electrons in the semiconductor material, creating a flow of electricity.
The electricity generated by the solar cells is direct current (DC), which...
In Star connection, line voltage is equal to the square root of 3 times phase voltage.
Line voltage is the voltage between any two line conductors in a three-phase system.
Phase voltage is the voltage between any line conductor and the neutral point in a three-phase system.
In a Star connection, all three phases are connected to a common neutral point.
The relationship between line voltage and phase voltage in Star connect...
posted on 10 Jul 2024
RDBMS stands for Relational Database Management System, a type of database management system that stores data in a structured format.
Organizes data into tables with rows and columns
Uses SQL for querying and managing data
Supports ACID properties for data consistency
Examples: MySQL, Oracle Database, SQL Server
I applied via Recruitment Consultant and was interviewed in Feb 2021. There were 3 interview rounds.
based on 1 interview
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