Larsen & Toubro Limited Junior Engineer Electrical Interview Questions and Answers

Transformer Testing
Transformer protection
Relay
CT
Breker
HT & LT Panel
Moter IR&WR & PI
Moter Name Plet
Earthing

Q1. Present Company
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Q2. Your Present Sailri
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My current salary is competitive for a junior engineer position in the electrical field.
• My current salary is in line with industry standards for junior engineers in the electrical field.

• I am satisfied with my current salary and feel it reflects my skills and experience.

• I have received positive feedback on my performance which may have contributed to salary increases.

• I am open to discussing salary expectations for a new...read more
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Q1. What are basics electrical ,What are the foundations of production and maintenance work?
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Basics of electrical include understanding circuits, components, and power sources. Foundations of production and maintenance work involve safety, planning, and troubleshooting.
• Basics of electrical include understanding circuits, components, and power sources

• Foundations of production work involve safety, planning, and quality control

• Foundations of maintenance work involve safety, planning, and troubleshooting

• Examples o...read more
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Q2. Main parts, sub contained process , the basic rule of the electric triangle formula identificing , explanating of its branches
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Q1. What is diesel generator, transformer & HVAC
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Diesel generator is a backup power source using diesel fuel, transformer is a device that transfers electrical energy between circuits, and HVAC is a system for heating, ventilation, and air conditioning.
• Diesel generator: provides backup power using diesel fuel, commonly used in areas with frequent power outages

• Transformer: transfers electrical energy between circuits, stepping up or down voltage levels as needed

• HVAC: ...read more
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Q2. Operation & maintenance LT pannel & HT pannel
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Q3. What is fire fighting system
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A fire fighting system is a set of equipment and procedures designed to detect, control, and extinguish fires in a building or area.
• Includes fire alarms, sprinkler systems, fire extinguishers, and fire hoses

• May also involve fire suppression systems like foam or gas

• Designed to protect lives and property in the event of a fire

• Regular maintenance and testing are crucial to ensure effectiveness
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Q4. What is DM plant
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DM plant stands for Demineralization plant, used to remove minerals and salts from water.
• DM plant is used in industries to produce demineralized water for various processes.

• It consists of ion exchange resins to remove minerals like calcium, magnesium, and salts from water.

• The process involves passing water through cation and anion exchange columns to remove ions.

• DM plant is essential in power plants, pharmaceutical ind...read more
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Q5. What is acb,vcb,mccb, mcb
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ACB, VCB, MCCB, MCB are types of circuit breakers used in electrical systems.
• ACB stands for Air Circuit Breaker, used for high voltage applications.

• VCB stands for Vacuum Circuit Breaker, used for medium voltage applications.

• MCCB stands for Molded Case Circuit Breaker, used for low voltage applications.

• MCB stands for Miniature Circuit Breaker, used for residential and commercial applications.
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Q6. Fire fighting system
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Q7. ACB,VCB,MCCB,MCB,OCB etc
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Q1. Good knowledge in electrical
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Q2. Power system information and automation
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Q1. Self introduction & previous company experience
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Q1. As per company policy requirement condition
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Q1. As per company policy requirement
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Q1. What is current and voltage
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Current is the flow of electric charge while voltage is the force that drives the flow of electric charge.
• Current is measured in amperes (A) while voltage is measured in volts (V)

• Current flows from high potential to low potential while voltage is the difference in electric potential between two points

• Ohm's law relates current, voltage, and resistance: I = V/R

• Examples of voltage sources include batteries and power suppl...read more
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Q2. What is current and volt
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Current is the flow of electric charge while voltage is the measure of electric potential difference.
• Current is measured in amperes (A) while voltage is measured in volts (V).

• Current flows from high potential to low potential while voltage is the difference in electric potential between two points.

• Ohm's law relates current, voltage, and resistance: I = V/R.

• Examples of current and voltage include the current flowing thr
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