SgurrEnergy Electrical Engineer Interview Questions and Answers

Q1. About work culture
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Q2. About technical
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Q1. Related to Transformer
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Q1. Can you tell me about yourself?
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Q2. What are your responsibilities in the plant?
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As a Senior Engineer in the plant, my responsibilities include overseeing operations, managing projects, ensuring compliance with regulations, and leading a team of engineers.
• Overseeing day-to-day operations in the plant

• Managing projects related to plant upgrades or expansions

• Ensuring compliance with safety and environmental regulations

• Leading and mentoring a team of engineers

• Troubleshooting technical issues and implem
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Q3. Why is tan delta testing conducted in power transformers?
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Tan delta testing is conducted in power transformers to assess the insulation condition and detect any potential faults.
• Tan delta testing helps in evaluating the insulation quality of power transformers.

• It can detect any potential issues such as moisture, contamination, or aging of insulation materials.

• By measuring the tan delta value, engineers can assess the dielectric losses in the transformer.

• Regular tan delta test...read more
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Q4. What is a vector group?
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A vector group is a method used to represent the phase relationship between the primary and secondary windings of a transformer.
• Vector group indicates the connection of transformer windings and the phase shift between them.

• It is represented by a combination of letters and numbers, such as Yd1, Dyn11, etc.

• Different vector groups have different phase relationships, affecting the transformer's performance and operation.

• Ve...read more
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Q5. What should be considered when erecting an IDT (Inverter duty Transformer)?
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Considerations when erecting an IDT (Inverter duty Transformer)
• Ensure the transformer is designed for inverter duty applications

• Properly size the transformer based on the inverter's output power

• Consider the harmonic content of the inverter's output when selecting the transformer

• Provide adequate ventilation and cooling for the transformer to handle the increased heat generated by the inverter

• Ensure proper grounding and ...read more
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Q6. What is the star-delta connection in power transformers?
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Star-delta connection is a method used in power transformers to reduce starting current and improve efficiency.
• Star-delta connection involves connecting the primary windings of the transformer in a star configuration during starting, and then switching to a delta configuration during normal operation.

• This method helps in reducing the starting current drawn by the transformer, which is beneficial for the power system.

• It...read more
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Q7. What types of conductors are used in high-tension (HT) lines, and what are their current capacities?
Ans. 
High-tension (HT) lines use different types of conductors with varying current capacities.
• Types of conductors used in HT lines include aluminum, steel, and composite materials

• Aluminum conductors are commonly used due to their lightweight and high conductivity

• Steel conductors are used for their strength and durability

• Composite conductors are a newer technology that offer a balance of strength and conductivity

• Current cap...read more
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Q8. What is the distance between poles in 33KV high tension lines?
Ans. 
The distance between poles in 33KV high tension lines is typically around 50-60 meters.
• The distance between poles in high tension lines is determined by factors such as terrain, voltage level, and local regulations.

• In general, the distance can range from 50 to 60 meters for 33KV high tension lines.

• This distance is important to ensure proper support and insulation of the conductors between poles.
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Q9. What is the process of laying LT cables?
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The process of laying LT cables involves planning, trenching, laying the cables, jointing, testing, and backfilling.
• Plan the route and depth of the trench for laying the cables.

• Excavate the trench to the required depth and width.

• Lay the cables in the trench, ensuring proper alignment and support.

• Joint the cables together using appropriate connectors.

• Test the cables for continuity and insulation resistance.

• Backfill the ...read more
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Q10. What is the process for attaching modules?
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The process for attaching modules involves identifying connection points, aligning the modules, securing them in place, and testing for functionality.
• Identify connection points on both modules

• Align the modules properly to ensure a secure fit

• Secure the modules in place using appropriate fasteners or connectors

• Test the functionality of the attached modules to ensure proper connection
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Q1. Why do you want to change jobs?
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Seeking new challenges and opportunities for growth in a more innovative environment.
• Desire for new challenges and opportunities

• Seeking growth and advancement

• Looking for a more innovative work environment
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Q2. What can you share about your family?
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I come from a close-knit family of four, including my parents and younger sister.
• My parents have always been supportive of my career choices and encouraged me to pursue my passion for engineering.

• I have a younger sister who is currently studying computer science at university, following in my footsteps.

• We enjoy spending quality time together, whether it's going on family vacations or simply having dinner at home.
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Q1. About yourself and how many experience in SCM
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Q1. Subscription materials details
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Q1. Basic law of governing transformer
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The basic law governing transformers is the law of electromagnetic induction.
• The law states that when the magnetic field around a conductor changes, an electromotive force (EMF) is induced in the conductor.

• This EMF can cause a current to flow if the conductor forms a closed loop.

• In a transformer, this principle is used to transfer electrical energy from one circuit to another through electromagnetic induction.

• The prima...read more
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Q2. What are various losses in transformer
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Various losses in a transformer include copper losses, iron losses, and stray losses.
• Copper losses occur due to resistance in the transformer windings.

• Iron losses, also known as core losses, occur due to hysteresis and eddy currents in the transformer core.

• Stray losses occur due to leakage flux and stray capacitance in the transformer.

• Copper losses and iron losses are the major contributors to total losses in a transfo...read more
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Q3. Difference between AC and DC
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AC and DC are two types of electrical current. AC changes direction periodically while DC flows in one direction.
• AC stands for Alternating Current and DC stands for Direct Current.

• AC changes direction periodically, typically in a sinusoidal waveform.

• DC flows in one direction only, maintaining a constant polarity.

• AC is used for power transmission over long distances due to its ability to be easily converted to different...read more
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Q4. What is mean by inverter and its basic working
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An inverter is a device that converts DC power to AC power.
• An inverter is commonly used in electrical systems to convert the direct current (DC) produced by sources such as batteries or solar panels into alternating current (AC) that can be used to power appliances and devices.

• The basic working principle of an inverter involves the use of electronic components such as transistors to switch the DC input on and off rapid...read more
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Q5. What all component are required in solar panel installation and brief them
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Solar panel installation requires several components including solar panels, inverters, mounting systems, wiring, and electrical protection devices.
• Solar panels: These are the main components that convert sunlight into electricity.

• Inverters: They convert the direct current (DC) produced by solar panels into alternating current (AC) that can be used in homes or fed into the grid.

• Mounting systems: These are used to secur...read more
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Q6. What all various type of circuit breaker are there their uses and their rating.
Ans. 
There are various types of circuit breakers with different uses and ratings.
• Miniature Circuit Breaker (MCB) - used in residential and commercial buildings

• Molded Case Circuit Breaker (MCCB) - used in industrial applications

• Air Circuit Breaker (ACB) - used for high voltage applications

• Ground Fault Circuit Interrupter (GFCI) - used to protect against electrical shocks

• Residual Current Circuit Breaker (RCCB) - used to detec...read more
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Q7. Why you choose electrical engineering and what all project you has done and what are your final year project if you mention in resume.
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Q1. WTG In Reduction
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Q2. Inox wtg issue major component
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Q1. Inox wtg most failure generator bearing
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Q2. I am interested over change me and
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Q3. Best company insanewin
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Q1. Concrete technology
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Q2. Soil and steel testing and field observation
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Easy test with simple questions

Q1. How do solar panels produce electricity
Ans. 
Solar panels convert sunlight into electricity through the photovoltaic effect.
• Solar panels are made up of photovoltaic cells that contain semiconductors like silicon.

• When sunlight hits the solar panel, the photons in the light are absorbed by the semiconductors.

• This absorption creates an electric current as the electrons in the semiconductors are excited and flow through the material.

• The flow of electrons generates el...read more
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Q2. Tell us about the company
Ans. 
The company is a leading provider of electrical engineering solutions for various industries.
• Specializes in designing and implementing electrical systems for commercial and industrial buildings

• Offers services such as power distribution, lighting design, and energy efficiency consulting

• Works with clients in sectors like manufacturing, healthcare, and telecommunications

• Has a team of experienced electrical engineers and t...read more
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