Inox Wind Service Engineer Interview Questions and Answers

Q1. Electrical basic and advance knowledge
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Q2. HT LT line, transformer,generator
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Q3. Igbt,thyrister,rectifier,inverter,diode
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Q1. Tell me about DFIG
Ans. 
DFIG stands for Doubly Fed Induction Generator, a type of generator used in wind turbines.
• DFIG is a type of generator commonly used in wind turbines

• It has two sets of windings - one connected to the grid and the other connected to a converter

• The converter allows control of the generator's output power and speed

• DFIG is known for its ability to provide variable speed operation and improved efficiency

• It is a popular choic...read more
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Q2. How wind power is generated
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Wind power is generated by harnessing the kinetic energy of wind to turn turbines, which then convert the energy into electricity.
• Wind turbines capture the kinetic energy of the wind and convert it into mechanical energy.

• The mechanical energy is then used to turn a generator, which produces electricity.

• Wind power is a renewable energy source that is clean and sustainable.

• Wind farms are large areas with multiple wind tu...read more
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Q1. My experience with wind turnbine
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I have extensive experience working with wind turbines, including maintenance, troubleshooting, and repairs.
• Performed regular maintenance checks on wind turbines to ensure optimal performance

• Troubleshooted and repaired mechanical and electrical issues as needed

• Worked with a team to install new wind turbines and ensure they were functioning correctly

• Utilized specialized tools and equipment to perform tasks safely and ef
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Q2. Roles and responsibilities at site incharge level
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Site incharge oversees operations, manages resources, ensures safety, and coordinates with stakeholders.
• Managing day-to-day operations at the site

• Supervising and coordinating with on-site staff and contractors

• Ensuring compliance with safety regulations and protocols

• Managing resources effectively to meet project deadlines

• Communicating with clients, vendors, and other stakeholders

• Troubleshooting technical issues and prov...read more
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Q1. Focus on roll and work wise technical skill.
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Q1. Line diagram of WTG
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A line diagram of a wind turbine generator (WTG) shows the flow of energy from wind to electricity.
• The diagram typically includes the rotor blades, gearbox, generator, and power electronics

• The blades capture wind energy and turn the rotor, which drives the gearbox

• The gearbox increases the rotational speed and sends it to the generator

• The generator converts the rotational energy into electrical energy

• The power electroni...read more
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Q2. Working of DFIG converters
Ans. 
DFIG converters are used in wind turbines to convert variable frequency AC power to DC power and back to AC power.
• DFIG stands for Doubly Fed Induction Generator

• The converter consists of two back-to-back voltage source converters

• One converter controls the rotor current and the other controls the grid current

• The rotor current is controlled to maintain a constant torque on the turbine

• The grid current is controlled to main...read more
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