Siemens Energy Electrical Supervisor Interview Questions and Answers

Q1. What is earthing
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Q2. What is transformer
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Q1. 1.Dc system ( pv area) Testing & commissioning and operations maintenance. 2. Inverter operations & maintenance. 3.IDT Testing, operation & maintenance. 4.Bettery bank Maintenance. 5.Reporting purpose. 6.S...read more
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Q2. Module Rating, Testing, commissioning , cleaning as per sop accordingly
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Q1. Family related and old company behaviour for work . sallary decision
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Q1. Wtg working? And yaw drive system operation process.
Ans. 
WTG stands for Wind Turbine Generator. Yaw drive system is responsible for orienting the turbine blades into the wind.
• WTG converts wind energy into electrical energy

• Yaw drive system rotates the nacelle to face the wind

• Yaw drive system consists of yaw motor, yaw brake, and yaw bearing

• Yaw motor receives signals from the controller to rotate the nacelle

• Yaw brake holds the nacelle in position during maintenance or high win
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Q1. What is the use of star delta connection
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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
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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. About virtual DOM and it's implementation
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Q2. Implementation of map, reduce, filter
Ans. 
Map, reduce, and filter are higher-order functions commonly used in functional programming to manipulate arrays.
• Map: Transforms each element in an array based on a provided function.

• Reduce: Reduces an array to a single value by applying a function to each element.

• Filter: Creates a new array with elements that pass a certain condition.
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Q3. Closures and their implementation
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Closures are functions that have access to variables from their containing scope.
• Closures can access variables from their outer function even after the outer function has finished executing.

• Closures can be used to create private variables in JavaScript.

• Closures are commonly used in event handlers and callbacks.
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Q4. Redux sagas and their practical use cases
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Redux sagas are middleware libraries for managing side effects in Redux applications.
• Redux sagas are used to handle asynchronous actions in Redux, such as API calls or timers.

• They are implemented as generator functions that can pause and resume execution.

• Redux sagas provide a more structured and testable approach to handling side effects compared to traditional Redux middleware like Thunk.

• Common use cases for redux sag...read more
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Q5. Basic javascript output questions
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Q1. Write a function to find the sum of the array using reduce.
Ans. 
Function to find sum of array using reduce
• Use the reduce method to iterate through the array and accumulate the sum

• Convert array elements to numbers before summing them up

• Handle edge cases like empty array or non-numeric elements

• Example: const array = ['1', '2', '3']; const sum = array.reduce((acc, curr) => acc + Number(curr), 0);
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Q2. About form validation techniques
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Q3. UseCallback and useMemo
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Q1. What do you know about Hitachi energy
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Hitachi Energy is a global technology leader that provides innovative and sustainable energy solutions.
• Hitachi Energy offers a wide range of products and services for the energy sector, including grid integration, digital solutions, and consulting services.

• The company focuses on creating a more sustainable energy future through its advanced technologies and expertise.

• Hitachi Energy is known for its commitment to innova...read more
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Q2. Why do you want to join only Hitachi energy.
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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. All fields related questions and answers
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Q2. Termination and instalation related
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Q3. Desion view drawing,masurment
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Q4. Testing related itd, HT panel, ICOG, CT, PT
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Q5. Haindling of field work
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