Laser Power & Infra Electrical Project Engineer Interview Questions and Answers

Q1. What are different types of cables
Ans. 
Different types of cables include coaxial, twisted pair, fiber optic, and USB.
• Coaxial cable is used for cable TV and internet connections

• Twisted pair cable is used for Ethernet connections

• Fiber optic cable is used for high-speed data transmission over long distances

• USB cable is used for connecting devices to a computer
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Q2. What did you do during internship
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Q3. Types of transformers, basic principles of transformers working
Ans. 
Transformers are electrical devices that transfer energy from one circuit to another through electromagnetic induction.
• Transformers are of two types - step-up and step-down transformers

• The basic principle of transformer working is electromagnetic induction

• The transformer consists of two coils - primary and secondary

• When an alternating current flows through the primary coil, it creates a magnetic field which induces a v...read more
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Q4. Working of induction motor
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Q1. Salary discussion and total experience
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Q1. REC Standard LT and HT line overhead and underground
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Q1. Final salary discussion
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Q1. Related electrical question
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Q2. Like wire connection
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About your work style and work management

Q1. Test your deep technical knowledge of your work
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Q2. Transformer working principle.
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Q3. Proses of new meter installation.
Ans. 
The process of new meter installation involves site survey, meter selection, installation, testing, and commissioning.
• Site survey to determine the location and requirements for the new meter

• Meter selection based on the specific needs and specifications of the site

• Installation of the new meter by qualified electricians or engineers

• Testing the meter to ensure accurate readings and proper functionality

• Commissioning the me...read more
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Q4. What is the Proses of LOTO? How it's works?
Ans. 
LOTO stands for Lockout/Tagout. It is a safety procedure used to ensure that dangerous machines are properly shut off and not started up again prior to the completion of maintenance or servicing work.
• LOTO involves isolating energy sources, locking them out, and tagging them to indicate that maintenance work is being performed.

• Workers involved in the maintenance work are the ones who apply the locks and tags, ensuring t...read more
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Q1. Discussed about your salary
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Q2. Why you want this job?
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Q3. Why we hire you?
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Q4. Why are you leaving your previous company?
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Q1. What is a locomotive?
Ans. 
A locomotive is a rail transport vehicle that provides the motive power for trains.
• Locomotives can be powered by diesel engines, electric motors, or steam engines.

• They are designed to pull or push train cars along railway tracks.

• Examples include the GE ES44AC diesel locomotive and the Siemens ACS-64 electric locomotive.

• Locomotives are equipped with various controls for speed, braking, and safety.

• They often have a disti...read more
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Q2. What is an auxiliary converter?
Ans. 
An auxiliary converter is a device that converts electrical energy for auxiliary systems in larger power systems.
• Used to supply power to auxiliary equipment like control systems and lighting.

• Commonly found in power plants, ships, and industrial applications.

• Examples include DC-DC converters and AC-DC converters.

• Enhances system reliability by providing backup power.
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Q3. What are the differences between Direct Current (DC) and Alternating Current (AC)?
Ans. 
DC flows in one direction, while AC changes direction periodically, affecting their applications and characteristics.
• DC (Direct Current) flows steadily in one direction, e.g., batteries.

• AC (Alternating Current) changes direction periodically, e.g., household power supply.

• DC is used in low-voltage applications like electronics and batteries.

• AC is used for high-voltage power transmission and in homes.

• DC has a constant vo...read more
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Q4. What is a trainer, and what are the different types of trainers?
Ans. 
A trainer is a professional who imparts knowledge and skills in a specific field, using various methods and tools.
• Types of trainers include: Technical Trainers (e.g., software training), Corporate Trainers (e.g., leadership skills), and Fitness Trainers (e.g., personal trainers).

• Technical Trainers focus on specific skills or technologies, such as programming languages or software applications.

• Corporate Trainers develop...read more
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Q5. What is control wiring?
Ans. 
Control wiring refers to the electrical connections that manage and control machinery and equipment operations.
• Used in automation systems to connect sensors, switches, and controllers.

• Examples include wiring for relays, contactors, and programmable logic controllers (PLCs).

• Typically involves low voltage circuits for safety and efficiency.

• Control wiring can be found in HVAC systems, industrial machinery, and home automa...read more
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Q6. What is an auxiliary converter, and what does it mean?
Ans. 
An auxiliary converter is a device that converts electrical energy for auxiliary systems in larger electrical systems.
• Used in power systems to supply power to non-primary loads.

• Examples include DC-DC converters for battery charging.

• Common in renewable energy systems to manage energy flow.

• Can provide power for control systems, lighting, and HVAC.
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Q7. What is a transformer?
Ans. 
A transformer is an electrical device that transfers electrical energy between circuits through electromagnetic induction.
• Transforms voltage levels: steps up or steps down voltage.

• Consists of primary and secondary coils wound around a magnetic core.

• Used in power distribution systems to manage voltage levels.

• Example: A step-down transformer reduces 220V to 12V for household use.

• Essential for efficient long-distance elec...read more
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Q8. What are high tension (HT) and low tension (LT) panels?
Ans. 
HT panels handle high voltage, while LT panels manage low voltage in electrical distribution systems.
• HT panels operate at voltages above 1 kV, typically used in substations.

• LT panels operate at voltages below 1 kV, commonly used in residential and commercial buildings.

• HT panels are used for transmission and distribution of electricity over long distances.

• LT panels are used for local distribution and powering appliances...read more
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Q9. What are the types of motor control panels?
Ans. 
Motor control panels manage and control electric motors, ensuring efficient operation and protection.
• Direct-On-Line (DOL) Starter: Simple and cost-effective for small motors.

• Star-Delta Starter: Reduces starting current for larger motors.

• Variable Frequency Drive (VFD): Controls motor speed and torque by varying frequency.

• Soft Starter: Gradually increases motor voltage to reduce mechanical stress.

• Programmable Logic Contr...read more
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Q10. What are the types of power control panels?
Ans. 
Power control panels manage and distribute electrical power in various applications, ensuring safety and efficiency.
• Motor Control Centers (MCC): Used for controlling motors in industrial applications.

• Distribution Boards: Distribute electrical power to various circuits.

• Automatic Transfer Switch Panels: Switch between power sources automatically during outages.

• Control Panels for Generators: Manage generator operations an...read more
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Aptitude+ Technical

Q1. Engineering Questions, Technology, Technical Knowledge, Projects, Training, Communication Skills, Leadership, Primary, Secondary, Business, Skill, Distributor Handling, Scouting.
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