Param Renewable Energy Junior Engineer Electrical Interview Questions and Answers

Q1. Transformer working principle, what oil use in Transformer, oil not add what happen.
Ans. 
Transformers work on the principle of electromagnetic induction. Mineral oil is commonly used in transformers. If oil is not added, the transformer may overheat and fail.
• Transformers work on the principle of electromagnetic induction

• Mineral oil is commonly used in transformers to provide insulation and cooling

• If oil is not added, the transformer may overheat and fail
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Q2. How to start dc motor.
Ans. 
To start a DC motor, apply a voltage to the motor terminals.
• Connect the positive terminal of the power supply to the motor's positive terminal.

• Connect the negative terminal of the power supply to the motor's negative terminal.

• Gradually increase the voltage to avoid sudden jerks or damage to the motor.

• Ensure the motor is properly lubricated and free from any mechanical obstructions before starting.
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Q3. Why you join tata power
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Q1. Adani solar energy
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Q2. Adani solar energy sidda
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Adani solar energy sidda
Answered by Poonam Singh Rathore
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Q1. Adani solar energy
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Q2. Adani solar energy
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Q1. Adani solar energy
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Q2. Adani solar energy sidda
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Q1. How cheek motor condition
Ans. 
To check a motor's condition, assess its electrical parameters, mechanical integrity, and operational performance.
• Measure voltage and current: Use a multimeter to check if the motor is receiving the correct voltage and current.

• Inspect insulation: Perform an insulation resistance test to ensure the windings are not shorted or grounded.

• Check for unusual noises: Listen for grinding or rattling sounds that may indicate mec...read more
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Q2. What is limit switch
Ans. 
A limit switch is an electromechanical device that detects the presence or position of an object, often used for control and safety.
• Used in industrial machinery to control the movement of parts.

• Commonly found in elevators to detect the position of the elevator car.

• Used in conveyor systems to stop the belt when an object is detected.

• Can be used in safety applications, such as emergency stop buttons.
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Q3. What is no and nc
Ans. 
NO (Normally Open) and NC (Normally Closed) refer to relay contact states in electrical circuits.
• NO contacts are open when the relay is not energized, allowing current to flow only when activated.

• Example: A light switch that turns on a light when pressed is a NO contact.

• NC contacts are closed when the relay is not energized, allowing current to flow until activated.

• Example: A safety switch that cuts power when triggere...read more
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Q4. How to control wireing cheek2
Ans. 
Wiring checks ensure electrical systems are safe and functional, preventing faults and ensuring compliance with standards.
• 1. Visual Inspection: Check for damaged insulation or exposed wires.

• 2. Continuity Testing: Use a multimeter to ensure there are no breaks in the circuit.

• 3. Insulation Resistance Testing: Measure the resistance of insulation to prevent leakage currents.

• 4. Voltage Testing: Verify that the correct volt...read more
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Q5. How slove technical issue
Ans. 
To solve technical issues, I follow a systematic approach involving identification, analysis, and resolution.
• Identify the issue: Gather information about the problem, such as symptoms and error messages.

• Analyze the root cause: Use tools like the 5 Whys or Fishbone Diagram to pinpoint the underlying issue.

• Develop a solution: Brainstorm potential fixes and evaluate their feasibility.

• Implement the solution: Apply the chos...read more
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Q1. Tell me about cables
Ans. 
Cables are used to transmit electrical signals or power between devices.
• Cables are made up of conductive materials, such as copper or aluminum.

• They come in various types, including coaxial, twisted pair, and fiber optic cables.

• Cables are used in a wide range of applications, such as telecommunications, computer networking, and power distribution.

• They can be categorized based on their voltage rating, insulation material...read more
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Q2. What is betz limit
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The Betz limit is the maximum amount of energy that can be extracted from a wind turbine, which is 59.3% of the total kinetic energy of the wind.
• The Betz limit was derived by German physicist Albert Betz in 1919.

• It states that no wind turbine can capture more than 59.3% of the kinetic energy in the wind.

• This limit is based on the conservation of mass and momentum principles.

• The Betz limit is important in wind energy en...read more
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Q1. Do you know auto cad
Ans. 
Yes, I am familiar with AutoCAD.
• I have experience using AutoCAD for electrical design and drafting.

• I am proficient in creating and modifying electrical schematics and layouts using AutoCAD.

• I have used AutoCAD to generate 2D and 3D models of electrical components and systems.

• I am familiar with AutoCAD's tools and commands specific to electrical engineering.

• I have successfully completed projects using AutoCAD in my previ
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Q1. They will ask for your previous job profile and basic of electrical. Not much more theoretical, major part is practical
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