Coal India Electrician Interview Questions, Process, and Tips

Q1. What is a transformer?
Ans. 
A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
• Transformers are used to increase or decrease voltage levels in electrical circuits.

• They consist of two coils of wire, known as the primary and secondary coils, wrapped around a core made of iron or other magnetic materials.

• Step-up transformers increase voltage levels, while step-down tr...read more
Answered by AI
Add your answer
Q2. What is Tan Delta testing?
Ans. 
Tan Delta testing is a diagnostic test used to measure the insulation quality of electrical equipment.
• Tan Delta testing measures the power factor of insulation materials to detect any defects or deterioration.

• It helps in identifying potential issues before they lead to equipment failure or breakdown.

• The test involves applying a voltage to the insulation and measuring the current flowing through it.

• Results are compared ...read more
Answered by AI
Add your answer
Q3. What is CT and how does it work?
Add your answer
Q4. Do you have experience working in a switch yard?
Ans. 
Yes, I have experience working in a switch yard.
• I have worked in a switch yard for 3 years, performing maintenance and repairs on various electrical equipment.

• I am familiar with the safety protocols and procedures required in a switch yard environment.

• I have experience troubleshooting and resolving issues with switch yard equipment, such as transformers and circuit breakers.
Answered by AI
Add your answer
Q5. What is a merger and how does it work?
Ans. 
A merger is when two companies combine to form a new entity, typically to increase market share or efficiency.
• A merger involves two companies agreeing to join forces and operate as a single entity.

• The goal of a merger is often to increase market share, expand into new markets, or achieve cost savings through economies of scale.

• There are different types of mergers, such as horizontal mergers (between competitors in the ...read more
Answered by AI
Add your answer
Q6. Do you have experience with testing transformers?
Ans. 
Yes, I have experience testing transformers in various settings.
• I have experience testing transformers in industrial settings to ensure proper functioning.

• I am familiar with using multimeters and other testing equipment to check for voltage, current, and resistance.

• I have tested transformers for efficiency and performance, identifying any issues and making necessary repairs.

• I have also conducted routine maintenance che...read more
Answered by AI
Add your answer
Q7. What is the function of an isolator in electrical work?
Ans. 
An isolator is a device used to disconnect a circuit from the power supply, ensuring the safety of personnel working on the circuit.
• An isolator is used to physically disconnect a circuit from the power supply, allowing maintenance work to be carried out safely.

• It is often used in conjunction with a lockout/tagout system to prevent accidental re-energization of the circuit.

• Isolators are commonly found in electrical pane...read more
Answered by AI
Add your answer

Direct through campus placement and group discussion.

Q1. All the studies related concepts were aksed
Add your answer
Q2. About COST ACCOUNTING STANDARDS
Add your answer

Q1. Genal taip , Technical
Add your answer

Q1. Who are you job hai kya
Add your answer
Q2. Job Hai to coll karna
Add your answer
Q3. Interviews kob ho gaa
Add your answer

Q1. It may be possible to your selection advise.
Add your answer
Q2. Iam going to interview and tell me some questions.after that iam sending reply . After seven days .get out results .iam selected.so that after 15 days .iam joining the company.
Add your answer

Q1. Experience of working....
Ans. It's saw the ability and potential of person to do work.....
Answered Anonymously
Add your answer