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Cairn Oil Summer Intern Interview Questions, Process, and Tips

Updated 8 Aug 2024

Cairn Oil Summer Intern Interview Experiences

1 interview found

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

I applied via Campus Placement and was interviewed in Feb 2024. There were 2 interview rounds.

Round 1 - Group Discussion 

Topic:- Deadlines should be strictly followed during a Project in an industry or not

Round 2 - Technical 

(4 Questions)

  • Q1. Why Transmission Voltages are always in Multiples of 11kV
  • Ans. 

    Transmission voltages are in multiples of 11kV due to historical reasons and practical considerations.

    • Historically, the standardization of transmission voltages around 11kV was influenced by early power system designs and equipment capabilities.

    • Practically, using multiples of 11kV allows for easier voltage transformation and compatibility between different parts of the power grid.

    • Higher voltages like 132kV, 220kV, and ...

  • Answered by AI
  • Q2. Which is the best type of Circuit Breaker for higher voltages and why?
  • Ans. 

    The best type of Circuit Breaker for higher voltages is a Gas-insulated Circuit Breaker (GCB) due to its superior insulation properties and ability to handle high voltages.

    • Gas-insulated Circuit Breakers (GCBs) are filled with sulfur hexafluoride gas, which has excellent insulating properties.

    • GCBs are compact in size and can handle high voltages up to 1100 kV, making them ideal for high voltage applications.

    • They are hig...

  • Answered by AI
  • Q3. Explain what you mean by switchgear and protection
  • Ans. 

    Switchgear refers to electrical equipment used to control, protect, isolate, and switch electrical circuits. Protection involves measures to prevent damage to electrical equipment and ensure safety.

    • Switchgear includes devices like circuit breakers, fuses, and disconnect switches.

    • Protection involves measures like overcurrent protection, earth fault protection, and differential protection.

    • Switchgear and protection are es...

  • Answered by AI
  • Q4. Explain the generation, transmission and distribution of Electrical System
  • Ans. 

    Generation, transmission, and distribution of electrical system involves producing electricity, sending it through power lines, and delivering it to consumers.

    • Generation: Electricity is produced at power plants using various sources such as coal, natural gas, nuclear, hydro, wind, or solar energy.

    • Transmission: High voltage electricity is sent over long distances through transmission lines to substations.

    • Distribution: L...

  • Answered by AI

Interview questions from similar companies

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

I applied via Recruitment Consulltant and was interviewed before Jul 2022. There were 3 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 - One-on-one 

(3 Questions)

  • Q1. General discussion on cement grinding unit
  • Q2. Discussion on grinding efficiency and factors effecting performance of grinding
  • Ans. 

    Grinding efficiency is influenced by factors like feed rate, material properties, grinding wheel speed, and coolant usage.

    • Feed rate: Higher feed rates can improve efficiency but may lead to increased wear on the grinding wheel.

    • Material properties: Harder materials require slower grinding speeds to achieve optimal efficiency.

    • Grinding wheel speed: Higher speeds can increase efficiency but may also generate more heat, aff...

  • Answered by AI
  • Q3. The effect of grinding media on ball mill performance
  • Ans. 

    Grinding media can significantly impact ball mill performance by affecting grinding efficiency and wear rate.

    • The type of grinding media used can affect the grinding efficiency of the ball mill.

    • Different materials of grinding media have varying wear rates, impacting maintenance costs.

    • The size and shape of the grinding media can also influence the grinding process.

    • For example, using ceramic balls instead of steel balls c...

  • Answered by AI
Round 3 - One-on-one 

(2 Questions)

  • Q1. On slag reactivity and it's effect on cement performance
  • Ans. 

    Slag reactivity can impact cement performance by influencing hydration reactions and strength development.

    • Slag reactivity refers to the ability of slag to react with water and form cementitious compounds.

    • Higher slag reactivity can lead to faster hydration reactions and improved early strength development.

    • However, excessive slag reactivity can also result in rapid setting and reduced workability of the concrete.

    • Proper s...

  • Answered by AI
  • Q2. How the ground slag enhance concrete performance was discussed. The effects of ground slag in concrete especially durability of concrete was discussed
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(2 Questions)

  • Q1. What is medicine
  • Q2. What is tablet???
  • Ans. 

    A tablet is a portable computer device with a touchscreen display, typically used for browsing the internet, watching videos, playing games, and more.

    • Portable computer device with a touchscreen display

    • Commonly used for browsing the internet, watching videos, playing games, etc.

    • Examples: Apple iPad, Samsung Galaxy Tab, Amazon Fire Tablet

  • Answered by AI
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
More than 8 weeks
Result
Selected Selected

I applied via Company Website and was interviewed before Feb 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. What is cavitation in centrifugal pump? How do you mean by NPSH?
  • Ans. 

    Cavitation is the formation of vapor bubbles in a centrifugal pump due to low pressure. NPSH stands for Net Positive Suction Head.

    • Cavitation occurs when the pressure at the pump inlet drops below the vapor pressure of the liquid, causing the formation of vapor bubbles.

    • These vapor bubbles collapse when they reach higher pressure areas, leading to damage to the pump impeller and reduced pump performance.

    • Cavitation can be...

  • Answered by AI
  • Q2. What is surging? How do you manage lubrication in different rotating equipment?
  • Ans. 

    Surging is a phenomenon in rotating equipment where the flow rate becomes unstable.

    • Surging occurs when the flow rate through a rotating equipment fluctuates due to changes in operating conditions.

    • It can lead to reduced efficiency, increased wear and tear, and potential damage to the equipment.

    • To manage lubrication in different rotating equipment, it is important to monitor and control the flow rate, viscosity, and temp...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare technical part. Study about reliability of different types of equipment.

I applied via Naukri.com and was interviewed before Aug 2020. There were 4 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. About company

Interview Preparation Tips

Interview preparation tips for other job seekers - Its nice to share that interview was happened in 4 modes

Everything is fine and company culture is very good.
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. About your process.
  • Q2. About your KRA.
Round 2 - HR 

(2 Questions)

  • Q1. About your KRA.
  • Q2. About your self.

Interview Preparation Tips

Interview preparation tips for other job seekers - Good company and good interview flow with experience staff.

Interview Questionnaire 

1 Question

  • Q1. Things to consider during invoice processing.
  • Ans. 

    During invoice processing, it is important to consider accuracy, completeness, and timeliness.

    • Ensure all necessary information is included on the invoice

    • Verify the accuracy of the amounts and calculations

    • Match the invoice to the corresponding purchase order or contract

    • Ensure timely processing to avoid late payment fees or missed discounts

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Be very specific in your answer. Use application reference.

I applied via Naukri.com and was interviewed before Jun 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 - One-on-one 

(2 Questions)

  • Q1. Sap knowledge is a must
  • Q2. You need to be always ready to work on weekends

Interview Preparation Tips

Interview preparation tips for other job seekers - Every is a firefighter day, you need to spend atleast 14 to 16 hrs daily. It's an organisation culture and everyone spent same time daily to complete their daily task.
Interview experience
4
Good
Difficulty level
Hard
Process Duration
4-6 weeks
Result
Selected Selected

I applied via Approached by Company and was interviewed before Mar 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. Details of power station design
  • Ans. 

    Power station design involves the planning and construction of facilities that generate electricity.

    • Design includes selection of appropriate technology and equipment

    • Consideration of environmental impact and safety measures

    • Layout and construction of buildings and infrastructure

    • Integration with power grid and transmission systems

    • Examples include thermal power plants, hydroelectric power plants, and wind farms

  • Answered by AI
  • Q2. Efficiency of Power station
  • Ans. 

    Efficiency of a power station is the ratio of output power to input power.

    • Efficiency can be improved by using advanced technologies and equipment.

    • Regular maintenance and cleaning of equipment can also improve efficiency.

    • Efficiency can be affected by factors such as fuel quality, weather conditions, and demand for electricity.

    • For example, a power station using combined cycle technology can achieve an efficiency of up to...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Stick to the basiscs and don't show overconfidence. Details overall knowledge must have to crack the interview
Interview experience
4
Good
Difficulty level
Hard
Process Duration
6-8 weeks
Result
Selected Selected

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

Round 1 - Technical 

(1 Question)

  • Q1. Explain GTG Operation and load sharing
  • Ans. 

    GTG operation involves multiple generators working together to share the load and ensure continuous power supply.

    • GTG stands for Gas Turbine Generator

    • In GTG operation, multiple generators are synchronized to work together

    • Load sharing ensures that the power demand is distributed evenly among the generators

    • This helps in maintaining a stable power supply and prevents overloading of any single generator

  • Answered by AI

Skills evaluated in this interview

Cairn Oil Interview FAQs

How many rounds are there in Cairn Oil Summer Intern interview?
Cairn Oil interview process usually has 2 rounds. The most common rounds in the Cairn Oil interview process are Group Discussion and Technical.
What are the top questions asked in Cairn Oil Summer Intern interview?

Some of the top questions asked at the Cairn Oil Summer Intern interview -

  1. Which is the best type of Circuit Breaker for higher voltages and w...read more
  2. Why Transmission Voltages are always in Multiples of 1...read more
  3. Explain what you mean by switchgear and protect...read more

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Cairn Oil Summer Intern Interview Process

based on 1 interview

Interview experience

5
  
Excellent
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Cairn Oil Summer Intern Reviews and Ratings

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5.0/5

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5.0

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5.0

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5.0

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5.0

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5.0

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