NTPC Mechanical Engineer Interview Questions and Answers

Q1. What is the use of star delta connection
Ans. 
Star delta connection is used in electrical engineering to reduce starting current and torque in induction motors.
• Reduces starting current by starting the motor in star connection and then switching to delta connection

• Reduces starting torque to prevent mechanical stress on the motor

• Commonly used in applications where high starting current or torque could be damaging, such as large industrial motors
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Q2. What do you do before starting electrical activity
Ans. 
Before starting electrical activity, I ensure all safety precautions are in place and equipment is functioning properly.
• Perform a safety check on all equipment and tools

• Verify that all connections are secure and wires are properly insulated

• Double check the circuit design and calculations for accuracy

• Ensure proper grounding is in place to prevent electrical hazards
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Q1. What is your area of expertise?
Ans. 
My area of expertise is in power systems and renewable energy.
• Specialize in designing and analyzing power systems

• Experience with renewable energy sources such as solar and wind power

• Knowledge of grid integration and energy storage technologies
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Q2. How are you manage team?
Ans. 
I manage my team by setting clear goals, providing support and resources, fostering open communication, and recognizing achievements.
• Set clear goals and expectations for team members

• Provide necessary support and resources for team to succeed

• Foster open communication and encourage collaboration

• Recognize and reward team achievements

• Delegate tasks effectively based on team members' strengths and skills
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Q1. About Quality & calibration
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Q1. Working principle of transfer
Ans. 
Transfer principle involves the movement of energy or information from one system to another.
• Transfer principle is based on the concept of transferring energy or information from one source to another.

• It is commonly used in electrical engineering to transfer power from a source to a load.

• Examples include power transfer in transformers, data transfer in communication systems, and heat transfer in thermal systems.
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Q2. Power converter
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Q1. Like what is your work experience. Are you willing to climb twice in a day .
Ans. According to your experience needs to give answers Second question- yes
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Q2. Are you willing to work if require to support near by site .
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Q1. As per your experience as previous company they asked questions, but more focos on safety .
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Q2. What is LOTO , Types of LOTO
Ans. 
LOTO stands for Lockout/Tagout, a safety procedure used to ensure that dangerous machines are properly shut off and not started up again prior to the completion of maintenance or servicing work.
• LOTO involves locking the energy isolating devices with an assigned individual lock and tag to prevent the machine from being turned on.

• Types of LOTO include electrical LOTO, mechanical LOTO, and pneumatic LOTO.

• Examples of LOTO ...read more
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Q1. Previous experiences questions, like DFIG , Converter system, power factor , transformer , lighting system, Earthing system .
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Normal discussion with seniors

Q1. Salary discussion and joining details
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Q1. 1.Talk about your self . 2.Talk about your skills and experience. 3.Why your want to work in this company.
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Q2. Talk about your self. Talk about your skills and experience.
Ans. 
I am an experienced Electrical Engineer with a strong skill set in designing and troubleshooting electrical systems.
• Proficient in designing electrical circuits and systems

• Skilled in troubleshooting and repairing electrical equipment

• Experienced in using CAD software for electrical design

• Knowledgeable in electrical codes and regulations

• Familiar with PLC programming and automation systems

• Strong analytical and problem-solv...read more
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Q3. Talk about your self. Why do want to work in this company. How many years experience in electrical engineering.
Ans. 
I am an experienced electrical engineer with a passion for problem-solving and innovation. I have worked in the field for 8 years and have a strong track record of successful projects.
• 8 years of experience in electrical engineering

• Strong problem-solving and innovation skills

• Proven track record of successful projects

• Passionate about the field

• Continuously updating knowledge and skills
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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
Ans. 
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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