ONGC Energy Centre Electrical Maintenance Engineer Interview Questions and Answers

Q1. Electrical maintenance
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Q2. Electrical maintenances
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Q3. Safety Electrical
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Q4. Prevent maintenance
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Q5. Power Transformers IDT testing
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Quantitative aptitude

Q1. Given the image of switch,which type of switch shown in the fig
Ans. 
The switch shown in the image is a toggle switch.
• The switch has a lever that can be moved up and down to turn it on or off.

• Toggle switches are commonly used in electronic devices and appliances.

• Examples of toggle switches include light switches and power switches on electronic devices.
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Q2. Network theorem questions
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Q1. In t years where you want to see yourself
Ans. 
In t years, I see myself as a senior electrical engineer leading innovative projects and mentoring junior engineers.
• Continuing to develop my technical skills and knowledge in the field of electrical engineering

• Taking on more leadership roles within projects and teams

• Mentoring and guiding junior engineers to help them grow in their careers

• Contributing to the development of cutting-edge technologies and solutions

• Possibly...read more
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Q2. Why do you want to join Hitachi energy
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I want to join Hitachi Energy because of their innovative solutions and global impact in the energy sector.
• Hitachi Energy is a leader in providing sustainable energy solutions

• I am impressed by Hitachi Energy's commitment to innovation and technology advancement

• I believe my skills and experience align well with the opportunities at Hitachi Energy

• I am excited about the chance to work on cutting-edge projects and contribu
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Q1. What is your job role?
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Q1. Introduction of basic electricals
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Q2. How wind turbine opearates
Ans. 
Wind turbines operate by converting the kinetic energy of wind into mechanical power, which is then converted into electricity.
• Wind turns the blades of the turbine, causing them to spin

• The spinning blades turn a shaft connected to a generator

• The generator converts the mechanical energy into electrical energy

• The electricity is then sent to the power grid for distribution

• Wind speed and direction are monitored to optimize
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Q1. About plc & automation
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Q2. About vfd working & how it works
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Q3. About type of sensors
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Q4. About star delta power & control wiring
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Q5. About how to measure parameter of your plantequipment performance
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Q1. Technical stuff
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Q1. Technical stuff related to current job
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Q1. Background and about your self
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Q2. Why looking for change
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Q1. What is Transformer? & About your Project and Internship
Ans. 
A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.
• Transformers consist of two coils of wire, known as the primary and secondary coils.

• The primary coil is connected to a power source, creating a magnetic field when current flows through it.

• This magnetic field induces a voltage in the secondary coil, transferring energy from the primary to the second...read more
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Q1. About yourself and your Family
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