Coal India Electrician Interview Questions, Process, and Tips

Q1. Mobile Chaucer plant
Add your answer
Q2. Ster-delt connection
Add your answer

Q1. NO NC connection
Add your answer
Q2. Wiring system all type
Add your answer
Q3. Home wiring system
Add your answer

Q1. AC,DC Cable laying
Ans. Manpower handling at site on daily basis.
Answered Anonymously
Add your answer
Q2. Module InstallationWork
Add your answer
Q3. Ac Dc Trench Excavation.
Add your answer
Q4.  String Inter Connection & Rectification Work
Add your answer
Q5. Supervision on field activity& overall activity of maintenance andmaking all schedule of daily activity
Add your answer
Q6. Coordinate with site teams for smooth operation of site activities.
Ans. 
Coordinate with site teams to ensure smooth operation of site activities.
• Regular communication with site teams to understand their needs and challenges

• Provide necessary support and resources to site teams

• Address any issues or conflicts that may arise among site teams

• Ensure all site activities are aligned with project timelines and goals
Answered by AI
Add your answer

Q1. What is light. How to used
Ans. 
Light is a form of electromagnetic radiation that is visible to the human eye. It is used for illumination, communication, and various other applications.
• Light is a type of electromagnetic radiation that is visible to the human eye.

• It can be produced naturally (sunlight) or artificially (light bulbs, LEDs).

• Light is used for illumination in homes, offices, streets, etc.

• It is also used for communication (fiber optics), p...read more
Answered by AI
View 1 more answer
Q2. What is transform
Ans. 
A transformer is a device that transfers electrical energy from one circuit to another through electromagnetic induction.
• Transformers consist of two coils of wire, known as the primary and secondary coils.

• The primary coil is connected to a power source, creating a magnetic field when current flows through it.

• This magnetic field induces a voltage in the secondary coil, allowing for the transfer of electrical energy.

• Tran...read more
Answered by AI
View 1 more answer
Q3. What is cooling tower
Ans. 
A cooling tower is a specialized heat exchanger in which air and water are brought into direct contact to reduce the water's temperature.
• Used in HVAC systems to remove heat from a building or industrial process

• Water is circulated through the tower and exposed to air, causing evaporation and cooling

• Commonly seen in power plants, refineries, and large buildings
Answered by AI
View 1 more answer
Q4. What is current
Ans. 
Current is the flow of electric charge in a circuit.
• Current is measured in Amperes (A).

• It is the rate of flow of electric charge past a point in a circuit.

• There are two types of current - direct current (DC) and alternating current (AC).

• Current is calculated using Ohm's Law: I = V/R, where I is current, V is voltage, and R is resistance.
Answered by AI
Add your answer

Q1. What is breaker
Ans. 
A breaker is an electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit.
• A breaker automatically interrupts the flow of electricity when it detects an overload or short circuit.

• Breakers come in different types such as circuit breakers, fuse boxes, and ground fault circuit interrupters (GFCIs).

• They are essential for preventing electrical fires and protecting electrical ...read more
Answered by AI
Add your answer
Q2. What is CRM. What used
Ans. 
CRM stands for Customer Relationship Management. It is a strategy used by companies to manage interactions with customers and potential customers.
• CRM involves using technology to organize, automate, and synchronize sales, marketing, customer service, and technical support.

• It helps companies build and maintain relationships with customers, streamline processes, and improve profitability.

• Examples of CRM software include
Answered by AI
Add your answer

Q1. What is megger. What used
Ans. 
A megger is a portable instrument used to measure the insulation resistance of electrical equipment.
• Measures insulation resistance to detect any faults or breakdowns in electrical insulation

• Helps prevent electrical accidents and equipment failures

• Commonly used in maintenance and troubleshooting of electrical systems
Answered by AI
Add your answer
Q2. What is MW . How to explen
Ans. 
MW stands for megawatt, a unit of power equal to one million watts.
• MW is a unit of power used to measure the rate at which energy is generated or consumed.

• 1 MW is equal to 1 million watts or 1,000 kilowatts.

• It is commonly used in the context of electricity generation and consumption.

• For example, a large wind turbine may have a capacity of 2 MW, meaning it can generate 2 million watts of power.
Answered by AI
Add your answer

Q1. Wiring MCB bord switch
Add your answer
Q2. Yes wiring board switchMCB
Add your answer

Q1. What is a transformer?
Add your answer
Q2. What is Tan Delta testing?
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?
Add your answer
Q5. What is a merger and how does it work?
Add your answer
Q6. Do you have experience with testing transformers?
Add your answer
Q7. What is the function of an isolator in electrical work?
Add your answer

Physics chemistry maths

Q1. What is ohm's law
Ans. 
Ohm's law states that the current flowing through a conductor is directly proportional to the voltage across it, and inversely proportional to the resistance of the conductor.
• Ohm's law is represented by the formula V = I * R, where V is voltage, I is current, and R is resistance.

• It helps in calculating the relationship between voltage, current, and resistance in an electrical circuit.

• For example, if a circuit has a vol...read more
Answered by AI
Add your answer
Q2. What is galvanometer
Ans. 
A galvanometer is a device used to detect and measure small electric currents.
• Galvanometers typically consist of a coil of wire in a magnetic field, which deflects in response to the current flowing through it.

• They are often used as components in more complex instruments like ammeters and voltmeters.

• Galvanometers can be analog or digital, with analog versions displaying readings on a scale and digital versions showing ...read more
Answered by AI
Add your answer
Q3. What is power factor ?
Ans. 
Power factor is the ratio of real power to apparent power in an electrical system.
• Power factor is a measure of how effectively electrical power is being used in a system.

• It is calculated by dividing the real power (in watts) by the apparent power (in volt-amperes).

• A power factor of 1 indicates all the power is being used effectively, while a power factor less than 1 indicates inefficiency.

• Improving power factor can red...read more
Answered by AI
Add your answer
Q4. What is galvenisation?
Ans. 
Galvanization is the process of applying a protective zinc coating to steel or iron to prevent rusting.
• Galvanization involves immersing the metal in a bath of molten zinc or using an electroplating process.

• The zinc coating acts as a sacrificial anode, protecting the underlying metal from corrosion.

• Common examples of galvanized items include galvanized steel pipes, fences, and roofing materials.
Answered by AI
Add your answer

Company is like a palm and the workers are like finger which gives more power to palm so team work always gives positive wings

Q1. How to check a motor in megar ?
Ans. 
To check a motor in megar, use a megohmmeter to measure the insulation resistance.
• Disconnect the motor from the power source.

• Remove the motor leads from the ground.

• Connect the megohmmeter to the motor leads and ground.

• Measure the insulation resistance.

• Compare the reading to the manufacturer's specifications.
Answered by AI
Add your answer
Q2. Why we use a ignator in suduom lamp ?
Ans. 
An ignitor is used in sodium lamps to start and maintain the discharge of sodium vapor.
• Sodium lamps require a high voltage to start the discharge of sodium vapor.

• The ignitor provides a high voltage pulse to start the discharge.

• Once the discharge is started, the ignitor is no longer needed.

• The ignitor also helps to maintain the discharge by providing a small current to keep the lamp lit.

• Without an ignitor, the lamp woul...read more
Answered by AI
Add your answer