L&T Construction Electrical Engineer - MEP Interview Questions and Answers

General knowlegde, Basic Aptitude, Domain Technical MCQ

Genx vs Genz, Altitude and comparsion

Q1. Components of Transformer
Ans. 
Components of a transformer include core, windings, and insulation.
• Core: Provides a path for magnetic flux

• Windings: Primary and secondary coils for inducing voltage

• Insulation: Prevents short circuits and ensures safety
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Q2. Question based on series and parallel resistance
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Q1. Define the term electrical engineering
Ans. 
Electrical engineering is a field of engineering that deals with the study and application of electricity, electronics, and electromagnetism.
• Involves designing, developing, testing, and supervising the production of electrical equipment and systems

• Includes working with power generation, transmission, distribution, and utilization

• Incorporates knowledge of electronics, electromagnetism, and computer systems

• Applies princi...read more
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Q2. Define the principle of motor
Ans. 
The principle of motor involves converting electrical energy into mechanical energy to produce motion.
• Motors operate based on the principle of electromagnetic induction

• Electric current flowing through a wire in a magnetic field creates a force that causes the wire to move

• This movement is harnessed to produce mechanical energy and drive motion

• Examples include DC motors, AC motors, and stepper motors
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Q3. What is an electric shock
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An electric shock is a sudden discharge of electricity through a person's body, causing injury or even death.
• An electric shock occurs when a person comes into contact with a source of electricity.

• The severity of an electric shock depends on the voltage, current, and duration of exposure.

• Symptoms of an electric shock can range from mild tingling to muscle contractions and burns.

• Examples of sources of electric shock incl...read more
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Q4. How can one protect themselves from an electric shock
Ans. 
To protect oneself from an electric shock, one should follow safety precautions and use proper equipment.
• Always turn off the power source before working on electrical equipment

• Use insulated tools and wear rubber gloves when working with live wires

• Avoid working in wet conditions or with wet hands

• Install Ground Fault Circuit Interrupters (GFCIs) in areas where water is present

• Regularly inspect and maintain electrical equ...read more
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Q5. What will resistance connected to a source voltage in series do
Ans. 
Resistance connected to a source voltage in series will affect the current flowing through the circuit.
• Increases the total resistance in the circuit

• Decreases the total current flowing through the circuit

• Causes a voltage drop across the resistor

• Can be calculated using Ohm's Law: V = I * R
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Q6. Define ohm's low
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Ohm's law states that the current flowing through a conductor is directly proportional to the voltage applied 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 the voltage, I is the current, and R is the resistance.

• It helps in calculating the current, voltage, or resistance in a circuit when the other two values are known.

• Ohm's law is...read more
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Q1. Salery discussion
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Q2. Location discussion
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Q1. Transformer realy
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Q1. What is transformer types?
Ans. 
Transformer types include step-up, step-down, isolation, autotransformer, and distribution transformers.
• Step-up transformer increases voltage output

• Step-down transformer decreases voltage output

• Isolation transformer provides electrical isolation between primary and secondary windings

• Autotransformer has a single winding with multiple taps for different voltage levels

• Distribution transformer is used to supply power to re
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Q2. What is types of motor
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Types of motors include AC motors, DC motors, synchronous motors, and induction motors.
• AC motors: Alternating current motors that are commonly used in household appliances and industrial applications.

• DC motors: Direct current motors that are used in applications where speed control is important, such as in electric vehicles.

• Synchronous motors: Motors that operate at a fixed speed and are often used in applications wher...read more
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Normal introduction and interview

Q1. Type of electrical motor
Ans. 
There are various types of electrical motors including AC motors, DC motors, synchronous motors, and induction motors.
• AC motors: commonly used in household appliances and industrial applications

• DC motors: used in applications where speed control is important, such as in electric vehicles

• Synchronous motors: used in applications where precise speed control is required, such as in clocks and timers

• Induction motors: widely...read more
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Q2. 3 phase induction motor starter
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Q3. Protection of transformer
Ans. 
Protection of transformer involves measures to prevent damage from overcurrent, overvoltage, and overheating.
• Use overcurrent protection devices such as fuses and circuit breakers to prevent damage from excessive current flow.

• Install overvoltage protection devices like surge arresters to safeguard against voltage spikes.

• Implement temperature monitoring systems to prevent overheating, such as thermal sensors and cooling ...read more
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Q4. ACB VCB maintenance
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Q5. Star delta connection
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Q1. Why do you want to do job?
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Q2. Why have you joined Electronics?
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Q3. What is Ohm's law?
Ans. 
Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points.
• Ohm's law is represented by the equation I = V/R, where I is the current, V is the voltage, and R is the resistance.

• It is named after Georg Simon Ohm, a German physicist who first formulated this law.

• This law is applicable to all types of circuits, including DC and AC circuits.

• It is use...read more
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Q1. Please tell about your recently completed project.?
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Q2. What type problem you have facing during entire completion of project?
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Q3. How can manage your subcontractor and stake holder?
Ans. 
Manage subcontractors and stakeholders by clear communication, setting expectations, regular updates, and addressing concerns promptly.
• Establish clear communication channels with subcontractors and stakeholders

• Set clear expectations and goals for the project

• Provide regular updates on project progress and milestones

• Address any concerns or issues promptly to maintain good relationships

• Hold regular meetings to discuss pro...read more
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Q4. How to manage client and if clint ask to work beyond the your BOQ and how will take this qty into the billing or amendment.
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Q1. What is your future Goal?
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Q2. How to manage your site staff and Your Reporting Boss?
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