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Coal India Trainee Interview Questions, Process, and Tips

Updated 13 May 2021

Coal India Trainee Interview Experiences

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Trainee Interview Questions & Answers

user image Anonymous

posted on 13 May 2021

I applied via Walk-in and was interviewed before May 2020. There were 6 interview rounds.

Interview Questionnaire 

4 Questions

  • Q1. Estimate wiring of a building and connections?
  • Ans. 

    Estimating wiring and connections in a building involves assessing the electrical needs and layout of the space.

    • Assess the electrical needs of the building, including the number of outlets, lighting fixtures, and appliances.

    • Determine the layout of the building and the best routes for wiring to avoid hazards and maximize efficiency.

    • Consider the type of wiring needed, such as copper or aluminum, and the appropriate gauge...

  • Answered by AI
  • Q2. Type of cabels that transfer power?
  • Ans. 

    Cables that transfer power are of different types depending on the application.

    • AC power cables

    • DC power cables

    • Coaxial cables

    • Ethernet cables

    • USB cables

    • HDMI cables

    • Optical fiber cables

  • Answered by AI
  • Q3. Type of single phase motor?
  • Ans. 

    Single phase motors are commonly used in household appliances and small machinery.

    • Split-phase motor

    • Capacitor-start motor

    • Capacitor-run motor

    • Shaded-pole motor

  • Answered by AI
  • Q4. Rating of distribution transformer?
  • Ans. 

    Distribution transformer rating is the maximum power it can handle without overheating.

    • Distribution transformer rating is expressed in kVA (kilovolt-ampere).

    • It is important to choose the right rating for the transformer based on the load requirements.

    • The rating of a transformer can be determined by calculating the load requirements of the system it is being installed in.

    • For example, if the load requirement is 500 kVA, ...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Don't explain any topic in brief tell only that ask by interviewrs, study stronger a chaper of your trade.

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Trainee Interview Questions & Answers

NTPC user image Anonymous

posted on 12 Jan 2015

Interview Questionnaire 

4 Questions

  • Q1. Explain the parameters of transmission line ?
  • Ans. 

    Parameters of transmission line include resistance, inductance, capacitance, and conductance.

    • Resistance: opposition to the flow of current

    • Inductance: ability to store energy in a magnetic field

    • Capacitance: ability to store energy in an electric field

    • Conductance: ability to conduct electric current

    • Examples: coaxial cable, waveguide, twisted pair cable

  • Answered by AI
  • Q2. What is Hysteresis curve ?
  • Ans. 

    Hysteresis curve is a graphical representation of the relationship between magnetic field strength and magnetization of a material.

    • It shows the lag between the magnetic field and the magnetization of a material.

    • It is used to study the magnetic properties of materials.

    • It is commonly used in the design of magnetic circuits and devices.

    • Examples include transformer cores, magnetic storage devices, and electric motors.

    • The s...

  • Answered by AI
  • Q3. Why and which type of transformer do we use to reduce power loss during transmission?
  • Ans. 

    We use step-up transformers to reduce power loss during transmission by increasing voltage and decreasing current.

    • Step-up transformers increase voltage and decrease current, which reduces power loss during transmission.

    • This is because power loss is proportional to the square of the current, so reducing current reduces power loss.

    • For example, power is transmitted over long distances at high voltages (e.g. 500 kV) to red...

  • Answered by AI
  • Q4. Explain Power Factor?
  • Ans. 

    Power factor is the ratio of real power to apparent power in an AC circuit.

    • Power factor is a measure of how efficiently electrical power is being used.

    • It ranges from 0 to 1, with 1 being the most efficient.

    • A low power factor can result in higher energy costs and equipment damage.

    • Capacitors can be used to improve power factor.

    • Power factor is important in industries where large amounts of electrical power are used.

  • Answered by AI

Interview Preparation Tips

Round: Resume Shortlist
Experience: First shortlisting is CPI based.

General Tips: • The company has different selection criteria's for different category.
• You must thoroughly study their site, it will make very good impression on them.
• You must give your interview in a way that they must think you will definitely join it.
Skills: Power Systems,
College Name: IIT- Kanpur

I was interviewed before Jan 2021.

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 Resume tips
Round 2 - 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 Resume tips
Round 3 - Resume Shortlist 
Pro Tip by AmbitionBox:
Properly align and format text in your resume. A recruiter will have to spend more time reading poorly aligned text, leading to high chances of rejection.
View all Resume tips
Round 4 - Resume Shortlist 
Pro Tip by AmbitionBox:
Double-check your resume for any spelling mistakes. The recruiter may consider spelling mistakes as careless behavior or poor communication skills.
View all Resume tips
Round 5 - HR 

(2 Questions)

  • Q1. What are your salary expectations?
  • Q2. Any questions hr team
  • Ans. My contact no not any time network area ple msg me
  • Answered Anonymously
Round 6 - Case Study 

Diploma

Round 7 - HR 

(1 Question)

  • Q1. What are your salary expectations?
Round 8 - Resume Shortlist 
Pro Tip by AmbitionBox:
Do not use an unprofessional email address such as cool_boy@email.com. It shows a lack of professionalism by the candidate.
View all Resume tips
Round 9 - Resume Shortlist 
Pro Tip by AmbitionBox:
Be truthful in your resume. It is very easy to catch false or lies during the interview by asking basic questions.
View all Resume tips
Round 10 - Resume Shortlist 
Pro Tip by AmbitionBox:
Be honest with your years of experience. All information you share will be verified at the time of joining.
View all Resume tips
Round 11 - Resume Shortlist 
Pro Tip by AmbitionBox:
Avoid using too much corporate jargon in your CV. Sometimes keeping things simple will get your job done.
View all Resume tips

Interview Preparation Tips

Interview preparation tips for other job seekers - I am civil engginer my experience hydro, irrigation tunnel, rvnl tunnel

I applied via Job Portal and was interviewed before Nov 2021. 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 Resume tips
Round 2 - Aptitude Test 

Direct through campus placement and group discussion.

Round 3 - Technical 

(2 Questions)

  • Q1. All the studies related concepts were aksed
  • Q2. About COST ACCOUNTING STANDARDS

Interview Preparation Tips

Interview preparation tips for other job seekers - Clear all your attempts of CMA in one go and prepare all the concepts before interview

I applied via Referral and was interviewed in Jan 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 Resume tips
Round 2 - HR 

(1 Question)

  • Q1. How can this internship help you achieve your career objectives

Interview Preparation Tips

Interview preparation tips for other job seekers - Apply in advance (6 months before), Read about the latest developments for discussions
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Newspaper Ad and was interviewed in Nov 2023. 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 Resume tips
Round 2 - Telephonic Call 

(1 Question)

  • Q1. Where do you stay

I applied via Company Website and was interviewed in Nov 2021. There were 4 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. About work experience and responsibilities
  • Q2. Why you are leaving to present job

Interview Preparation Tips

Interview preparation tips for other job seekers - Maintain your confidence level, give suitable answer if you know otherwise say sorry and move to next question....

Trainee Interview Questions & Answers

NTPC user image Anonymous

posted on 5 Apr 2024

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

I applied via latest gov jobs and was interviewed in Oct 2023. There were 3 interview rounds.

Round 1 - Aptitude Test 

Aptitude and reasoning

Round 2 - Group Discussion 

Discussion about social media

Round 3 - HR 

(1 Question)

  • Q1. Mechanical questions
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(1 Question)

  • Q1. Tell me about yourself
  • Ans. 

    I am a recent graduate with a degree in Business Administration and a passion for marketing and analytics.

    • Recent graduate with a degree in Business Administration

    • Passionate about marketing and analytics

    • Experience in internships related to marketing

    • Strong communication and analytical skills

  • Answered by AI

I applied via Naukri.com and was interviewed in Mar 2021. There were 4 interview rounds.

Interview Questionnaire 

4 Questions

  • Q1. What are your roles in your current job
  • Ans. Explaned about my roles and responsibilities
  • Answered Anonymously
  • Q2. How do you tackle vibrations in axial fans
  • Ans. 

    To tackle vibrations in axial fans, proper balancing, alignment, and maintenance are essential.

    • Perform dynamic balancing of the fan blades to minimize vibrations.

    • Ensure proper alignment of the fan with the motor and the surrounding structure.

    • Regularly inspect and maintain the fan components to prevent wear and tear.

    • Use vibration analysis techniques to identify and address any potential issues.

    • Consider installing vibrat...

  • Answered by AI
  • Q3. What are the challenges you faced your job
  • Ans. Explained about our ID fan hydro coupling issue
  • Answered Anonymously
  • Q4. What permit system do you follow
  • Ans. 

    We follow a permit system based on the project requirements and local regulations.

    • Our permit system ensures compliance with safety standards and legal requirements.

    • We obtain permits for activities such as construction, electrical work, and hazardous material handling.

    • The specific permit requirements vary depending on the nature of the project and the location.

    • We work closely with regulatory authorities to ensure timely...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Know the constraints in your answer so that interviewer not go further into particular topic
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Coal India Interview FAQs

What are the top questions asked in Coal India Trainee interview?

Some of the top questions asked at the Coal India Trainee interview -

  1. Estimate wiring of a building and connection...read more
  2. Type of cabels that transfer powe...read more
  3. Rating of distribution transforme...read more

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Coal India Trainee Salary
based on 10 salaries
₹1 L/yr - ₹8 L/yr
59% more than the average Trainee Salary in India
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Coal India Trainee Reviews and Ratings

based on 3 reviews

4.9/5

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4.9

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4.7

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4.3

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