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NMDC Limited Executive Trainee Interview Questions and Answers
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Anonymous
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Interview Preparation Tips
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I applied via Naukri.com and was interviewed in Apr 2023. There were 3 interview rounds.
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I applied via Newspaper Ad and was interviewed before Mar 2022. There was 1 interview round.
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Interview Preparation Tips
Selected
I applied via Company Website and was interviewed in Sep 2022. There was 1 interview round.
(2 Questions)
- Q1. Why SF6 gas use in GIS not other gas?
- Ans.
SF6 gas is used in GIS due to its excellent insulating properties and high dielectric strength.
SF6 gas has high dielectric strength, making it an excellent insulator for high voltage equipment like GIS
SF6 gas is non-toxic, non-flammable, and chemically stable, making it a safe choice for GIS
SF6 gas has a high global warming potential, but its use in GIS is tightly regulated to minimize emissions
Other gases like nitroge...
- Q2. Which type of conductor use in Transmission line?
- Ans.
Various types of conductors are used in transmission lines depending on the application.
Aluminum conductors are commonly used due to their lightweight and low cost.
Copper conductors are used in high voltage and high current applications.
ACSR (Aluminum Conductor Steel Reinforced) conductors are used for long distance transmission lines.
High-temperature conductors like AAAC (All Aluminum Alloy Conductors) are used in are...
Interview Preparation Tips
Skills evaluated in this interview
Selected
I applied via Company Website and was interviewed before Aug 2022. There were 2 interview rounds.
(2 Questions)
- Q1. Asking about integrated Steel plant.
- Q2. Asking specific past experience of your jobs profile.
Interview Preparation Tips
- Integrated Steel plant O&M
I applied via Job Portal and was interviewed before Nov 2021. There were 3 interview rounds.
Direct through campus placement and group discussion.
(2 Questions)
- Q1. All the studies related concepts were aksed
- Q2. About COST ACCOUNTING STANDARDS
Interview Preparation Tips
Somamanikumar Gandee
(2 Questions)
- Q1. A beam is hinged on both ends and a load is applied in between what are the additional thing we can do to reduce the deformation
- Ans.
To reduce deformation in a beam hinged on both ends with a load applied in between, additional measures can be taken.
Increase the beam's cross-sectional area to improve stiffness
Use materials with higher modulus of elasticity
Add support columns or braces to reduce bending
Distribute the load more evenly along the beam
Reduce the span length of the beam for better support
- Q2. Types of gears and name them
- Ans.
Types of gears include spur gears, helical gears, bevel gears, worm gears, and rack and pinion gears.
Spur gears have straight teeth and are the most common type of gear.
Helical gears have angled teeth for smoother and quieter operation.
Bevel gears have cone-shaped teeth and are used to change the direction of rotation.
Worm gears have a screw-like appearance and provide high gear reduction ratios.
Rack and pinion gears c
Interview Questionnaire
2 Questions
- Q1. What happens to copper loss in transformer when it is operates at half its rated MVA?
- Ans.
Copper loss in a transformer decreases when it operates at half its rated MVA.
Copper loss is directly proportional to the square of the current flowing through the windings.
When the transformer operates at half its rated MVA, the current flowing through the windings is reduced.
As a result, the copper loss in the transformer decreases.
This reduction in copper loss leads to improved efficiency and lower energy consumptio
- Q2. Induction Motor that gives high starting torque as well as high efficiecy?
- Ans.
A wound rotor induction motor can provide high starting torque and high efficiency.
Wound rotor induction motors have a higher starting torque compared to squirrel cage induction motors.
The rotor windings in a wound rotor motor can be connected to external resistors, allowing for higher torque during startup.
By adjusting the resistance in the rotor circuit, the motor can achieve high efficiency at full load.
Examples of ...
Interview Preparation Tips
Experience: 15 minutes were given to prepare then everybody expressed their views for 5 minutes each.
Duration: 30 minutes
Round: Technical Interview
Experience: Purely technical interview went for about 15 minutes.
College Name: IIT Roorkee
Management Trainee Interview Questions & Answers
Coal India
GRIRAJ PRASHAD MEENA
posted on 23 Mar 2015
Interview Questionnaire
4 Questions
- Q1. TEll me about yourself?
- Ans.
I am a highly motivated individual with a passion for learning and growth.
I have a Bachelor's degree in Business Administration
I have completed several internships in the field of marketing and sales
I am a quick learner and enjoy taking on new challenges
I am a team player and enjoy collaborating with others to achieve common goals
- Q2. Question related to subject?
- Q3. Tell me about haul road?
- Ans.
A haul road is a road used for transporting materials, typically in a mining or construction site.
Haul roads are designed to handle heavy loads and are often unpaved.
They are used to transport materials such as ore, rock, and dirt.
Haul roads must be maintained regularly to ensure safety and efficiency.
Proper drainage is important to prevent erosion and maintain road stability.
Examples of haul road equipment include hau
- Q4. What is flame safety lamp?
- Ans.
A flame safety lamp is a type of lamp used in mining to detect methane gas and prevent explosions.
It works by creating a flame inside a mesh screen that will go out if methane is present.
The lamp was invented by Sir Humphry Davy in 1815.
It was widely used in coal mines in the 19th and early 20th centuries.
Today, electronic gas detectors have largely replaced flame safety lamps in mining.
Interview Preparation Tips
Experience: i spoken in hindi.I only spoken selected topic related to the topic.i totally concentrated to interviewer and fellows.
Tips: Be cooll,speak frankly
Round: Technical Interview
Experience: 1.I told about me and my graduation and hobbies.Also about my achievements.2.I asked about minerals in rajasthan. I answered very well like lignite,cu,zn,pb,marbels.3.I answered it is generally gradient is 1in14 and stability is very important and its floor is hard.4. i answered that it it used in detection of O2 and CH4. then they said OK.you can leave.
Tips: Be confident
College Name: IIT DHANBAD
Management Trainee Interview Questions & Answers
Coal India
VIVEK SINGH FIRMAL
posted on 23 Mar 2015
Interview Preparation Tips
Experience: it was 3rd gd of my life
Tips: always give a word of thanks to the person who gives you chance to speak.
if u know nothing about the topic let others speak and then get some idea . u may even repeat their points too . all they want you is to be speaking kind
Duration: 10 minutes
College Name: IIT DHANBAD
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