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NMDC Limited Mining Engineer Trainee Interview Questions and Answers

Updated 11 Feb 2024

NMDC Limited Mining Engineer Trainee Interview Experiences

1 interview found

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
-
Result
-

I applied via Walk-in and was interviewed before Feb 2023. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. Types and grade of ore's in percentage
  • Ans. 

    The types and grades of ores in a mining operation are determined by their composition and quality.

    • Ores can be classified into various types based on their mineral composition, such as iron ore, copper ore, gold ore, etc.

    • The grade of an ore refers to the concentration of valuable minerals or metals in the ore, usually expressed as a percentage.

    • Different types of ores can have different grades, for example, high-grade i...

  • Answered by AI

Interview questions from similar companies

Interview experience
1
Bad
Difficulty level
-
Process Duration
-
Result
-
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 

(1 Question)

  • Q1. Mining Related questions
Round 3 - One-on-one 

(1 Question)

  • Q1. Mining sirdar related

Interview Preparation Tips

Interview preparation tips for other job seekers - Mining sirdar
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed before Aug 2023. There were 3 interview rounds.

Round 1 - Aptitude Test 

Paper was of medium range

Round 2 - HR 

(2 Questions)

  • Q1. Tell something about u and why u choose this as carrer ?
  • Ans. 

    I have always been fascinated by the mining industry and the opportunity to work on projects that have a significant impact on society.

    • Passionate about geology and engineering

    • Enjoy problem-solving and working in challenging environments

    • Excited about the potential to contribute to sustainable resource extraction

    • Inspired by the innovation and technology advancements in the mining sector

  • Answered by AI
  • Q2. Tell something about our company ?
  • Ans. 

    Your company is a leading mining company with a strong focus on sustainability and innovation.

    • Your company has a long history in the mining industry, with expertise in various minerals and metals.

    • You prioritize safety and environmental responsibility in all mining operations.

    • Your company invests in research and development to improve mining techniques and reduce environmental impact.

    • You have a strong track record of co...

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

(2 Questions)

  • Q1. Technical based question only
  • Q2. Practical based questions according to my field of work

Interview Preparation Tips

Interview preparation tips for other job seekers - I think to crack a interview be confident thats all. May be u r an avg or below avg or topper. Jst remember they need a worker who can handle their business and people.

I applied via Walk-in and was interviewed in Feb 2022. There were 2 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 

(13 Questions)

  • Q1. Suitable banch height for 2cu.m shovel is
  • Ans. 

    The suitable bench height for a 2cu.m shovel depends on various factors such as the type of material being mined and the equipment used.

    • The bench height should be determined based on the reach and capacity of the shovel.

    • It should allow for efficient loading and dumping of material.

    • The bench height should also consider the stability and safety of the mining operation.

    • Factors like the type of material, equipment limitati...

  • Answered by AI
  • Q2. The max width of the gallery in Indian coal mines is
  • Ans. 

    The maximum width of the gallery in Indian coal mines varies depending on the specific mine and its regulations.

    • The maximum width of the gallery is determined by safety regulations and guidelines set by the Indian government.

    • Different coal mines may have different maximum width requirements based on factors such as the type of coal being mined, the depth of the mine, and the mining method used.

    • For example, in undergrou...

  • Answered by AI
  • Q3. The max length of the trailing cable is
  • Ans. 

    The maximum length of the trailing cable depends on various factors such as power requirements, voltage drop, and safety regulations.

    • The length of the trailing cable is determined by the distance between the power source and the equipment it needs to supply.

    • Power requirements of the equipment play a role in determining the maximum length of the cable.

    • Voltage drop, which can affect the efficiency of power transmission, ...

  • Answered by AI
  • Q4. Detonating fuse consist core of
  • Ans. 

    Detonating fuse consists of a core

    • The core of a detonating fuse is the central part that initiates the explosion

    • The core is typically made of a highly reactive material, such as a mixture of powdered metals or chemicals

    • The core is surrounded by a protective casing to prevent accidental ignition

    • Examples of core materials include lead azide, mercury fulminate, or PETN

  • Answered by AI
  • Q5. The VOD of detonating fuse is
  • Ans. 

    The VOD of detonating fuse is the velocity at which the detonation wave travels along the fuse.

    • VOD stands for Velocity of Detonation.

    • It is a measure of how fast the detonation wave propagates through the fuse.

    • The VOD of a detonating fuse depends on factors such as the type of explosive used and the composition of the fuse.

    • A higher VOD means the detonation wave travels faster, resulting in a quicker explosion.

    • Different ...

  • Answered by AI
  • Q6. Safety fuse consist core of
  • Q7. In the detonator the priming charge is
  • Ans. 

    The priming charge in a detonator is the initial explosive charge that initiates the main explosive charge.

    • The priming charge is a small amount of explosive material that is sensitive to heat, shock, or friction.

    • It is designed to ignite quickly and reliably to initiate the main explosive charge.

    • The priming charge is usually contained within a small metal or plastic capsule.

    • Examples of priming charges include lead azide...

  • Answered by AI
  • Q8. Sheathed explosive coated with a sheath of
  • Ans. 

    A sheathed explosive is coated with a protective covering.

    • The sheath provides a layer of protection to the explosive material.

    • The sheath can be made of materials like plastic or rubber.

    • The purpose of the sheath is to prevent accidental ignition or detonation.

    • Examples of sheathed explosives include dynamite and blasting caps.

  • Answered by AI
  • Q9. The ANFO the water content should not be more than
  • Q10. The gelling agent in slurry explosive is
  • Ans. 

    The gelling agent in slurry explosive is typically a mixture of water and a thickening agent.

    • The gelling agent is used to increase the viscosity of the explosive mixture.

    • Common thickening agents used in slurry explosives include guar gum, carboxymethyl cellulose (CMC), and xanthan gum.

    • The gelling agent helps to suspend solid particles in the explosive mixture, allowing for better distribution and control of the explosi...

  • Answered by AI
  • Q11. The VOD of emulsion explosive is
  • Ans. 

    The VOD of emulsion explosive refers to its Velocity of Detonation.

    • VOD is a measure of how fast the explosive reaction propagates through the material.

    • It is an important characteristic for determining the efficiency and safety of explosive materials.

    • Higher VOD explosives are typically used for blasting hard rock formations.

    • Lower VOD explosives are used in situations where a controlled and less destructive explosion is

  • Answered by AI
  • Q12. The shovel can dig below ground upto
  • Q13. The output capacity of the dragline with 4.5 to 7.5 cu.m is million cu.mper year
  • Ans. 

    The output capacity of the dragline with 4.5 to 7.5 cu.m is in million cu.m per year.

    • The output capacity of the dragline depends on the size of the bucket it uses.

    • A larger bucket size allows for a higher output capacity.

    • The dragline's efficiency and operating conditions also affect its output capacity.

    • The output capacity can be calculated by considering the average number of cycles per hour and the bucket fill factor.

    • F...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - I am experienced shotfirer and team leader experts and management

I applied via Walk-in and was interviewed in Jan 2022. There were 2 interview rounds.

Round 1 - 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 tips
Round 2 - HR 

(4 Questions)

  • Q1. Regarding mining job and lectureship job.
  • Q2. Regarding working and why I want to join.
  • Q3. Related to My age and type of work.
  • Q4. Why I left the jobs.

Interview Preparation Tips

Interview preparation tips for other job seekers - In mining field mining engineer. Or lectureship. I am in need of job.
Interview experience
5
Excellent
Difficulty level
Hard
Process Duration
More than 8 weeks
Result
Selected Selected

I was interviewed before Feb 2022.

Round 1 - 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 tips
Round 2 - Assignment 

Overman Gas testing First aid rescue

Round 3 - Coding Test 

Drilling and production blasting

Interview Preparation Tips

Interview preparation tips for other job seekers - I am good warking and production archive
Mahendra Kumar Education diploma in mining

Interview Questionnaire 

1 Question

  • Q1. Underground mines

I applied via Company Website and was interviewed in Jan 2021. There was 1 interview round.

Interview Questionnaire 

2 Questions

  • Q1. How can we do Underground working , how blasting system achieved in underground mines. Support system , ventilation ,
  • Ans. 

    Underground working in mining involves the use of blasting systems, support systems, and ventilation.

    • Underground working in mining is done through the use of tunnels and shafts.

    • Blasting systems are used to break up the rock and extract the desired minerals.

    • Support systems such as rock bolts, shotcrete, and steel arches are used to ensure the stability of the underground workings.

    • Ventilation systems are crucial for prov...

  • Answered by AI
  • Q2. Which gad present from blasting and how it handles.
  • Ans. 

    Gases like carbon monoxide and nitrogen oxides are present from blasting and are handled through ventilation and monitoring.

    • Gases are produced during blasting due to the combustion of explosives.

    • Carbon monoxide and nitrogen oxides are the most common gases produced.

    • These gases can be harmful to humans and the environment.

    • Ventilation systems are used to remove the gases from the mine.

    • Monitoring systems are used to detec...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - We always confidential mode and prepare yourself basic information related underground mining.

Interview Preparation Tips

Round: Test
Experience: Wrritran and oral

Round: Group Discussion
Experience: Oral

I applied via Campus Placement and was interviewed before Feb 2021. There was 1 interview round.

Round 1 - One-on-one 

(1 Question)

  • Q1. Why do you wanna join our company

Interview Preparation Tips

Topics to prepare for Vedanta Resources Mining Engineer interview:
  • Drilling and blasting
Interview preparation tips for other job seekers - This is final round and they will check whether you can work in remote location and finally about interest in sports. Mainly they will check academic accomplishments and ask us to expalin some.

NMDC Limited Interview FAQs

How many rounds are there in NMDC Limited Mining Engineer Trainee interview?
NMDC Limited interview process usually has 1 rounds. The most common rounds in the NMDC Limited interview process are Technical.

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