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Bharat Aluminium Company (BALCO) Electrical Engineer Interview Questions and Answers

Updated 24 Nov 2024

Bharat Aluminium Company (BALCO) Electrical Engineer Interview Experiences

2 interviews found

Interview experience
4
Good
Difficulty level
Hard
Process Duration
6-8 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed in Nov 2022. There were 3 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Don’t add your photo or details such as gender, age, and address in your resume. These details do not add any value.
View all tips
Round 2 - Technical 

(2 Questions)

  • Q1. Filed related questions
  • Q2. Past experience and future planning
Round 3 - HR 

(1 Question)

  • Q1. Last plant salary

Interview Questionnaire 

4 Questions

  • Q1. Cable tray
  • Q2. HT motors
  • Q3. Air blast circuit breakers
  • Q4. VFD

Electrical Engineer Interview Questions Asked at Other Companies

Q1. What is the difference between Switch gear & Circuit Breakers ... read more
Q2. What is ATS, transformer maintenance procedure, protection of tra ... read more
asked in Tata Steel
Q3. 1.what is composite error and ratio error in current transformer?
Q4. 1. Power factor of transformer 2. types of DC machine 3. Working ... read more
Q5. How many types of transformer according to voltage transfer

Interview questions from similar companies

I applied via Approached by Company and was interviewed before Sep 2021. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. Electrical technical
  • Q2. Motor maintance, pull card ,zss,all light connection etc

Interview Preparation Tips

Interview preparation tips for other job seekers - Electrical technician working jindal Steel and Power Dongamauha

Interview Questionnaire 

6 Questions

  • Q1. 1.what is composite error and ratio error in current transformer?
  • Ans. 

    Composite error and ratio error are two types of errors in current transformers.

    • Composite error is the combination of ratio error and phase angle error in a current transformer.

    • Ratio error is the difference between the actual turns ratio and the specified turns ratio of a current transformer.

    • Phase angle error is the angular difference between the primary and secondary currents of a current transformer.

    • Composite error a...

  • Answered by AI
  • Q2. 2.Draw ckt diagram of a.c drive.
  • Ans. 

    An AC drive circuit diagram controls the speed of an AC motor by varying the frequency and voltage of the power supplied to it.

    • An AC drive consists of a rectifier, DC link, inverter, and control circuitry.

    • The rectifier converts AC power to DC power, which is stored in the DC link.

    • The inverter converts the DC power back to AC power with variable frequency and voltage.

    • The control circuitry adjusts the frequency and volta...

  • Answered by AI
  • Q3. 3.Draw single line diagram of distribution system with proper secification.
  • Ans. 

    A single line diagram of a distribution system is required with proper specifications.

    • The diagram should show the flow of power from the source to the load

    • It should include all components such as transformers, switchgear, and cables

    • The specifications should include voltage levels, power ratings, and protection devices

    • The diagram should follow standard symbols and conventions

    • Example: A 11 kV distribution system with a 5

  • Answered by AI
  • Q4. 4.Why do the dewpoint test in transformer?
  • Ans. 

    Dewpoint test is done in transformer to check the moisture content in the insulation oil.

    • Moisture in insulation oil can cause breakdown of transformer insulation

    • Dewpoint test helps to determine the moisture content in the oil

    • It is a preventive maintenance measure to avoid transformer failure

    • The test involves cooling a mirror until dew forms on it, and measuring the temperature at which dew forms

  • Answered by AI
  • Q5. 5.What is the difference between power transformer and distribution transformer?
  • Ans. 

    Power transformers are used in transmission systems to step up or down voltage, while distribution transformers are used in distribution systems to step down voltage.

    • Power transformers are used in high voltage transmission systems to step up or down voltage for long distance transmission.

    • Distribution transformers are used in low voltage distribution systems to step down voltage for local distribution.

    • Power transformers...

  • Answered by AI
  • Q6. 6.How to work Buchholz relay in transformer.
  • Ans. 

    Buchholz relay is used to protect transformers from faults by detecting gas and oil flow abnormalities.

    • Buchholz relay is installed in the pipe connecting the transformer tank and conservator tank.

    • It operates based on the principle that faults in the transformer generate gases and cause oil flow disturbances.

    • When gas or oil flow abnormalities occur, the relay trips and sends a signal to the control panel to isolate the ...

  • Answered by AI

Interview Preparation Tips

Round: Resume Shortlist
Experience: My resume was shortlisted from naukri.com.

I applied via Approached by Company and was interviewed in Jul 2022. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Technical 

(2 Questions)

  • Q1. I am working from Grid sub station . Transformer... CT PT CVT EARTHING PTW
  • Q2. All about 132 kv Gss

Interview Preparation Tips

Interview preparation tips for other job seekers - Dear sir ,
I am Diploma Holder in Electrical Engineer
With Experience in 132kv Gss in 6.5 years.
Currently in adani Transmission last 4.3 years.
I am working from scada operating system.
Interview experience
5
Excellent
Difficulty level
Hard
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Walk-in and was interviewed in May 2022. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. What is capacity your furnace
  • Ans. 

    The capacity of a furnace refers to its heating output, typically measured in BTUs or tons.

    • Furnace capacity is determined by the amount of heat it can produce.

    • It is usually measured in BTUs (British Thermal Units) or tons.

    • Higher capacity furnaces can produce more heat and are suitable for larger spaces.

    • For example, a furnace with a capacity of 80,000 BTUs can heat a larger area compared to one with a capacity of 40,000

  • Answered by AI
  • Q2. What is drive components in CCM department
  • Ans. 

    Drive components in CCM department are the parts that enable the motor to function properly.

    • Drive components include motors, gears, belts, and pulleys.

    • They work together to transfer power from the motor to the machine.

    • The components must be properly sized and aligned to ensure efficient operation.

    • Examples of machines that use drive components include conveyor belts, pumps, and fans.

  • Answered by AI

Interview Preparation Tips

Topics to prepare for Steel Authority Of India Electrical Engineer interview:
  • Electrical Engineering
Interview preparation tips for other job seekers - Good working, hard working, honestly only fouce my dream
Interview experience
3
Average
Difficulty level
Hard
Process Duration
More than 8 weeks
Result
Not Selected
Round 1 - Technical 

(1 Question)

  • Q1. Electrical control system and power control circuit
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. What is current
  • Ans. 

    Current is the flow of electric charge in a circuit.

    • Current is measured in Amperes (A)

    • It is the rate of flow of electric charge

    • Current flows from high potential to low potential

    • In a series circuit, the current remains the same throughout

  • Answered by AI
  • Q2. What is residence
  • Ans. 

    Residence refers to a person's primary place of living.

    • Residence is where a person lives on a permanent or long-term basis.

    • It can refer to a house, apartment, or any other type of dwelling.

    • Residence can also refer to a legal status, such as residency in a particular country.

    • It is important for determining things like tax obligations and voting rights.

  • Answered by AI
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Recruitment Consulltant and was interviewed in Dec 2023. There was 1 interview round.

Round 1 - Technical 

(4 Questions)

  • Q1. Why do we improve power factor.
  • Ans. 

    Improving power factor helps in reducing energy losses, increasing system efficiency, and reducing electricity costs.

    • Improving power factor reduces the amount of reactive power flowing in the system, which in turn reduces energy losses.

    • Higher power factor means more efficient use of electricity and less strain on the electrical system.

    • Improving power factor can lead to reduced electricity costs for consumers and utilit...

  • Answered by AI
  • Q2. What is buccholz relay, how does it work?
  • Ans. 

    Buccholz relay is a protective device used in oil-filled transformers to detect faults such as internal arcing or overheating.

    • Buccholz relay is installed in the oil pipe connecting the transformer tank and conservator tank.

    • It works based on the principle that gas is generated when a fault occurs in the transformer, causing oil level to drop and gas to accumulate in the relay.

    • The relay consists of two float switches - o...

  • Answered by AI
  • Q3. What is DP in siemens communication?
  • Ans. 

    DP in Siemens communication stands for Distributed Peripherals.

    • DP is a communication protocol used by Siemens for connecting distributed peripherals to a central control system.

    • It allows for real-time data exchange between the peripherals and the control system.

    • DP is commonly used in industrial automation applications.

    • Examples of DP communication modules include DP/DP couplers and DP slaves.

  • Answered by AI
  • Q4. How do we communicate s7 PLC and abb drive using profibus.
  • Ans. 

    To communicate S7 PLC and ABB drive using Profibus, you need to configure the Profibus network, set up the communication parameters, and establish the communication link.

    • Configure the Profibus network by setting the correct baud rate, address, and other network parameters.

    • Set up the communication parameters on both the S7 PLC and ABB drive to ensure they are compatible with each other.

    • Establish the communication link b...

  • Answered by AI

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Recruitment Consulltant and was interviewed in Oct 2022. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - HR 

(2 Questions)

  • Q1. What is Dc current ?
  • Ans. 

    DC current is the flow of electric charge in a constant direction.

    • DC stands for Direct Current.

    • It is the type of electric current that flows in a single direction.

    • DC current is produced by sources such as batteries, fuel cells, and solar cells.

    • It is commonly used in electronic devices and power transmission systems.

    • Unlike AC (Alternating Current), DC current does not change its direction over time.

  • Answered by AI
  • Q2. What is Dc Current?
  • Ans. 

    DC current is the flow of electric charge in a single direction.

    • DC stands for Direct Current

    • It is produced by sources such as batteries, fuel cells, and solar cells

    • DC current is used in electronic devices such as computers, televisions, and radios

    • DC current is measured in amperes (A)

  • Answered by AI

Bharat Aluminium Company (BALCO) Interview FAQs

How many rounds are there in Bharat Aluminium Company (BALCO) Electrical Engineer interview?
Bharat Aluminium Company (BALCO) interview process usually has 3 rounds. The most common rounds in the Bharat Aluminium Company (BALCO) interview process are Resume Shortlist, Technical and HR.
What are the top questions asked in Bharat Aluminium Company (BALCO) Electrical Engineer interview?

Some of the top questions asked at the Bharat Aluminium Company (BALCO) Electrical Engineer interview -

  1. Past experience and future plann...read more
  2. Air blast circuit breake...read more
  3. Filed related questi...read more

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Bharat Aluminium Company (BALCO) Electrical Engineer Interview Process

based on 1 interview

Interview experience

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Good
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Bharat Aluminium Company (BALCO) Electrical Engineer Salary
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₹1 L/yr - ₹9 L/yr
27% more than the average Electrical Engineer Salary in India
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