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Bharat Petroleum Mumbai Refinery Electrical Supervisor Interview Questions and Answers

Updated 8 Aug 2021

Bharat Petroleum Mumbai Refinery Electrical Supervisor Interview Experiences

1 interview found

I applied via Referral and was interviewed in Feb 2021. There was 1 interview round.

Interview Questionnaire 

2 Questions

  • Q1. What is the Megger
  • Ans. 

    A Megger is an electrical test instrument used to measure insulation resistance.

    • It is used to test the insulation resistance of electrical wires and cables.

    • It works by applying a high voltage to the insulation and measuring the resulting current.

    • It is commonly used in the maintenance and troubleshooting of electrical systems.

    • Megger readings can indicate the presence of insulation damage or degradation.

    • Meggers come in v...

  • Answered by AI
  • Q2. Types of breaker
  • Ans. 

    Breakers are devices used to protect electrical circuits from damage caused by overload or short circuit.

    • Circuit Breakers

    • Fuse

    • Ground Fault Circuit Interrupter (GFCI)

    • Arc Fault Circuit Interrupter (AFCI)

    • Miniature Circuit Breaker (MCB)

    • Molded Case Circuit Breaker (MCCB)

    • Air Circuit Breaker (ACB)

    • Oil Circuit Breaker (OCB)

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers -
This interview was a technical one but was majorly a stress test. It lasted for about 1 hour 10 minutes. The interviewer wanted to test both my knowledge and communication skills. Most of the questions asked to me were related to my engineering study i.e. startes and breakers related topics. He stressed a lot on the basics related to my project topic. Luckily I was able to answer most of the questions correctly. I tried to answer each question with examples and also used props on the table (like pens, paperweights, pen stands etc.) to explain my theories. It was my first offcampus interview, and I think I did pretty well for a fresher. You need to stay calm and should apply presence of mind. Please go through the job description thoroughly word-by-word and recheck your resume to ensure that you are a best-fit for the position.

Interview questions from similar companies

Interview Questionnaire 

7 Questions

  • Q1. What are the transformer losses
  • Ans. 

    Transformer losses refer to the energy losses that occur during the operation of a transformer.

    • 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 ...

  • Answered by AI
  • Q2. Efficiency of transformer?
  • Ans. 

    Efficiency of transformer is the ratio of output power to input power.

    • Efficiency is affected by factors such as core losses, winding resistance, and load impedance.

    • Efficiency can be improved by using high-quality materials, proper design, and regular maintenance.

    • Efficiency is expressed as a percentage and can range from 50% to 99% depending on the transformer type and application.

  • Answered by AI
  • Q3. Motor operated valve how work
  • Q4. Breaker maintenance ppm
  • Q5. Non sparking equipment and lights technique
  • Ans. 

    Non-sparking equipment and lights are used in hazardous environments to prevent explosions.

    • Non-sparking tools are made of materials that do not create sparks when struck or rubbed against each other.

    • Non-sparking lights use LED technology and are enclosed in a housing that prevents sparks from escaping.

    • These techniques are commonly used in industries such as oil and gas, chemical, and mining.

    • Examples of non-sparking too...

  • Answered by AI
  • Q6. Fire system handling
  • Q7. Gas leaked detection system
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Company Website and was interviewed before Dec 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 

(5 Questions)

  • Q1. What is your name?
  • Q2. What is your qualification
  • Q3. What is your occupation need?
  • Q4. What is your achievements?
  • Q5. How many family members in your family?
Interview experience
5
Excellent
Difficulty level
Hard
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed in Aug 2024. There was 1 interview round.

Round 1 - Technical 

(7 Questions)

  • Q1. What is the unit of Energy
  • Ans. 

    The unit of Energy is Joule (J)

    • The unit of Energy is Joule (J)

    • Energy can also be measured in kilowatt-hours (kWh)

    • 1 Joule is equal to 1 watt-second

  • Answered by AI
  • Q2. What is unit of resistance
  • Ans. 

    The unit of resistance is Ohm (Ω).

    • The unit of resistance is represented by the symbol Ω (Ohm).

    • Resistance is measured in Ohms, named after the German physicist Georg Simon Ohm.

    • One Ohm is equal to one volt per ampere (1 Ω = 1 V/A).

  • Answered by AI
  • Q3. What is unit of current
  • Ans. 

    The unit of current is Ampere (A)

    • The unit of current is Ampere (A)

    • Current is the flow of electric charge in a circuit

    • 1 Ampere is equivalent to 1 Coulomb per second

    • Current is measured using an ammeter

  • Answered by AI
  • Q4. What is the unit of capacitance
  • Ans. 

    The unit of capacitance is Farad (F)

    • The unit of capacitance is named after Michael Faraday

    • 1 Farad is equal to 1 Coulomb per Volt

    • Common multiples of Farad include microfarad (uF) and picofarad (pF)

  • Answered by AI
  • Q5. What is the unit of power
  • Ans. 

    The unit of power is the watt (W)

    • The unit of power is the watt (W)

    • Power is the rate at which work is done or energy is transferred

    • 1 watt is equal to 1 joule per second

    • Common examples of power units include kilowatts (kW) and horsepower (hp)

  • Answered by AI
  • Q6. What is the unit of power?
  • Ans. 

    The unit of power is the watt (W).

    • The unit of power is the watt (W)

    • Power is the rate at which work is done or energy is transferred

    • 1 watt is equal to 1 joule per second

    • Common examples of power units include kilowatts (kW) and horsepower (hp)

  • Answered by AI
  • Q7. What is the unit current?
  • Ans. 

    The unit of current is Ampere (A), which measures the rate of flow of electric charge.

    • The unit of current is Ampere (A)

    • Current is the rate of flow of electric charge

    • Commonly represented by the symbol 'I'

    • 1 Ampere is equivalent to 1 Coulomb per second

  • Answered by AI

Interview Preparation Tips

Topics to prepare for Indian Oil Corporation Electrical Supervisor interview:
  • Electrical and electronics engin
Interview preparation tips for other job seekers - Please give me appointment letter in speed post. I am passed out diploma in EEE at first class Mark. I am waiting for this company job. Please respond me

I applied via Recruitment Consulltant and was interviewed before Dec 2021. 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 - Practical interview 

(2 Questions)

  • Q1. 3phase Moter Star+Delta stater how work
  • Ans. 

    Star-Delta starter is used to start 3-phase motors. It reduces the starting current and torque.

    • Star-Delta starter connects the motor in star configuration during starting to reduce the starting current and torque.

    • After a few seconds, the starter switches the motor to delta configuration for normal operation.

    • This method is used for motors with high starting current and torque requirements.

    • It is commonly used in industri...

  • Answered by AI
  • Q2. DOL stater how work 3phase moter
  • Ans. 

    DOL starter is a direct-on-line starter used to start 3-phase motors by connecting them directly to the power supply.

    • DOL starter provides full voltage to the motor at the start

    • It consists of a contactor, overload relay, and start/stop push buttons

    • The contactor connects the motor to the power supply

    • The overload relay protects the motor from overloading

    • The start/stop push buttons control the on/off function of the motor

  • Answered by AI

Interview Preparation Tips

Topics to prepare for Indian Oil Corporation Electrical Supervisor interview:
  • As your interested job line
Interview preparation tips for other job seekers - Self confidence with your perfect experience work in your
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(5 Questions)

  • Q1. Electrical engineer
  • Q2. Electrical supervisor
  • Q3. Diploma electrical
  • Q4. I am interested
  • Q5. Work in interested

Interview Preparation Tips

Interview preparation tips for other job seekers - Diploma electrical engineer

I applied via Campus Placement and was interviewed before Nov 2020. There were 4 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Ready to work in team and learn new skills
  • Ans. Yes I for sure I would love to work in this environment and learn new skills
  • Answered Anonymously

Interview Preparation Tips

Interview preparation tips for other job seekers - Good they were very polite and help me to interact.

I applied via Approached by Company and was interviewed in Oct 2018. There were 5 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Technical questions like transformer & transmission and distribution system
  • Q2. Salary discussion.

Interview Preparation Tips

Round: Test
Experience: Aptitude, 60 questions 60 minutes

General Tips: Nice interview
This interview was a technical one but was majorly a stress test. It lasted for about 1 hour 10 minutes. The interviewer wanted to test both my knowledge and communication skills.
Skills: Communication, Body Language, Problem Solving, Analytical Skills, Leadership, Presentation Skills, Time Management, Decision Making Skills
Duration: 1-4 weeks

I applied via Walk-in and was interviewed before Dec 2020. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. About my career my highest qualification about my skills

Interview Preparation Tips

Interview preparation tips for other job seekers - Over all good experience with interveiw

I applied via Walk-in and was interviewed before Nov 2020. There was 1 interview round.

Interview Questionnaire 

5 Questions

  • Q1. What is circuit breaker?
  • Ans. 

    A circuit breaker is an electrical switch that automatically interrupts the flow of current when it exceeds a certain limit.

    • It is used to protect electrical circuits from damage caused by overloading or short circuits.

    • It works by detecting the excess current and tripping the switch to break the circuit.

    • It can be reset manually or automatically depending on the type of circuit breaker.

    • Examples include thermal circuit br...

  • Answered by AI
  • Q2. What is contactor?
  • Ans. 

    A contactor is an electrical switch used for switching an electrical circuit on or off.

    • It is used to control electric motors, lighting, heating, and other electrical loads.

    • It consists of a coil, contacts, and an enclosure.

    • The coil generates a magnetic field that pulls the contacts together to close the circuit.

    • Examples include HVAC systems, elevators, and industrial machinery.

    • Contactor ratings are based on the amount o...

  • Answered by AI
  • Q3. What is MCB?
  • Ans. 

    MCB stands for Miniature Circuit Breaker. It is an electrical switch that automatically shuts off the electrical circuit during an overload or short circuit.

    • MCB is a type of circuit breaker that is commonly used in residential and commercial buildings.

    • It is designed to protect electrical circuits from damage caused by overloading or short circuits.

    • MCBs are available in different current ratings and can be easily replac...

  • Answered by AI
  • Q4. What is motor ?
  • Ans. 

    A motor is a device that converts electrical energy into mechanical energy to produce motion.

    • Motors are used in various applications such as electric vehicles, industrial machinery, and household appliances.

    • There are different types of motors such as DC motors, AC motors, stepper motors, and servo motors.

    • The basic principle of a motor is the interaction between a magnetic field and an electric current.

    • Examples of motor...

  • Answered by AI
  • Q5. What is current transformer?
  • Ans. 

    A current transformer is a device that measures the current flowing in a circuit by producing a proportional current in its secondary winding.

    • Consists of a primary winding and a secondary winding

    • Primary winding is connected in series with the circuit carrying the current to be measured

    • Secondary winding is connected to a measuring instrument or protective relay

    • Produces a current in the secondary winding that is proporti...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Now I am from powergrid substation of odisha project I am attended of interview of Tata motor private limited after one years becaise the apprtentic traning will be decleare.

Bharat Petroleum Mumbai Refinery Interview FAQs

What are the top questions asked in Bharat Petroleum Mumbai Refinery Electrical Supervisor interview?

Some of the top questions asked at the Bharat Petroleum Mumbai Refinery Electrical Supervisor interview -

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Bharat Petroleum Mumbai Refinery Electrical Supervisor Salary
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₹3 L/yr - ₹3.8 L/yr
19% less than the average Electrical Supervisor Salary in India
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