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Coal India Electrician Interview Questions, Process, and Tips
Coal India Electrician Interview Experiences
1 interview found
Anonymous
I applied via Walk-in and was interviewed before Apr 2020. There was 1 interview round.
Interview Questionnaire
4 Questions
- Q1. What is transformer
- Ans.
A transformer is an electrical device that transfers electrical energy from one circuit to another through electromagnetic induction.
Transformers are used to increase or decrease the voltage of an alternating current (AC) power supply.
They consist of two coils of wire, known as the primary and secondary coils, which are wrapped around a magnetic core.
When an AC voltage is applied to the primary coil, it creates a magne...
- Q2. And type of breker
- Ans.
The type of breaker used depends on the electrical load and the circuit requirements.
The most common types of breakers are standard, AFCI, GFCI, and dual-function.
Standard breakers are used for general-purpose circuits.
AFCI breakers are used for circuits that power bedrooms and living rooms.
GFCI breakers are used for circuits that power bathrooms, kitchens, and outdoor areas.
Dual-function breakers combine AFCI and GFCI...
- Q3. Type of conductor
- Ans.
Conductors are materials that allow electricity to flow through them. There are different types of conductors used in electrical systems.
Copper is the most commonly used conductor in electrical wiring
Aluminum is also used as a conductor, especially in high voltage power transmission
Silver is the best conductor, but it is too expensive for most applications
Gold is also a good conductor, but it is even more expensive tha...
- Q4. Difference of mcb and mccb
- Ans.
MCB is a miniature circuit breaker while MCCB is a molded case circuit breaker.
MCB is used for low current applications while MCCB is used for high current applications.
MCB is rated up to 100 amps while MCCB can be rated up to 2500 amps.
MCCB has adjustable trip settings while MCB does not.
MCCB is more expensive than MCB.
Examples of MCB brands include Legrand and Schneider while examples of MCCB brands include Siemens a
Interview Preparation Tips
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Interview Questionnaire
3 Questions
- Q1. What is contractor.?
- Ans.
A contractor is a person or company hired to perform a specific task or project for a client.
Contractors are often hired for construction projects, electrical work, plumbing, and other specialized tasks.
They are typically paid on a project-by-project basis, rather than receiving a salary or hourly wage.
Contractors may work independently or as part of a larger company.
They are responsible for providing their own tools, ...
- Q2. What is rectifier.?
- Ans.
A rectifier is an electrical device that converts alternating current (AC) to direct current (DC).
Rectifiers are commonly used in power supplies for electronic devices.
They can be made using diodes or other semiconductor devices.
Rectifiers are essential for many electronic devices to function properly.
Examples of rectifiers include bridge rectifiers, half-wave rectifiers, and full-wave rectifiers.
- Q3. What is vvF...?
- Ans.
vvF is not a recognized term in the field of electrical engineering.
vvF is not a standard unit of measurement or abbreviation in the electrical field.
It is possible that the interviewer made a mistake or was testing the candidate's ability to admit when they don't know something.
The candidate could respond by politely asking for clarification or admitting that they are not familiar with the term.
I applied via Company Website and was interviewed before Nov 2020. There were 4 interview rounds.
Interview Questionnaire
2 Questions
- Q1. What is safety define deeply
- Ans.
Safety is the state of being free from harm or danger.
Safety involves identifying and assessing potential hazards
It requires taking measures to prevent accidents and injuries
It involves following established safety protocols and procedures
Safety also includes being prepared for emergencies and knowing how to respond
Regular training and education on safety practices is crucial
- Q2. Safety is major parts of a industries because lack of proper safety mangement industries can't be run longer time. in chemicals industries most of safety required for no Accident of fire
Interview Preparation Tips
Selected
I was interviewed in Sep 2023.
(1 Question)
- Q1. Electricals related questions
(1 Question)
- Q1. Lt tension,DG , ACB
(2 Questions)
- Q1. Tell me about yourself
- Q2. Tell me about your quallification
- Ans.
I am a certified electrician with a diploma in Electrical Engineering and 5 years of hands-on experience.
Certified electrician
Diploma in Electrical Engineering
5 years of hands-on experience
Interview Preparation Tips
I applied via Naukri.com and was interviewed before May 2021. There were 2 interview rounds.
Interview Preparation Tips
I applied via Recruitment Consultant and was interviewed in Oct 2021. There was 1 interview round.
Interview Questionnaire
2 Questions
- Q1. First introduction second address third qualification ITI technical question.
- Q2. Please give me job Indian oil corporation limited.
Interview Preparation Tips
Selected
I applied via Job Fair and was interviewed in May 2023. There were 3 interview rounds.
(2 Questions)
- Q1. After the initial rounds of candidate selection, every company holds an HR interview round to get to know the potential candidates personally. An HR interview's main aim is to judge the candidates' persona...
- Q2. Here's how you can pass your HR interview:
Written/Aptitude test: The first round for most of the companies is written round. ...
Technical interview Round: The next round is a technical interview. ...
HR interview round: The HR interview round is the last round where candidates are judged on the basis of their communication skills, soft skills, confidence level, etc.
Interview Preparation Tips
Tell me about a few of the first things you would do in this role. ...
What type of work environment do you prefer? ...
What are your career goals? ...
What salary would you expect for this role? ...
Do you have any questions for us?
(2 Questions)
- Q1. Basic electrical, wiring diagram, motor ,generator, alternator, basic electronic,
- Q2. Basic electrical, wiring diagram ,motor ,generator,alternator ,power generation
(2 Questions)
- Q1. Basic electrical ,wiring diagram ,motor ,generator, alternator,lighting
- Q2. Basic electrical ,transformer, motor ,generator, alternator, basic electronic
Motor mantain ,conveyor belt safety device like bss, zss, installation
Interview Preparation Tips
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
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