Power Grid Corporation of India Electrical Technician Interview Questions and Answers

Q1. What is the purpose of an uninterruptible power supply (UPS)?
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Q2. What is a substation?
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Q1. What is a relay?
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Q1. What is isolator ? Answer:- आइसोलेटर एक स्विचिंग डिवाइस है जो एक सर्किट में विद्युत प्रवाह को बनाने और तोड़ने की पेशकश करता है।
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Q2. What is circuit breaker?
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A circuit breaker is an electrical switch that automatically interrupts the flow of current in a circuit.
• It is designed to protect electrical circuits from damage caused by excessive current or short circuits.

• When the current exceeds a certain limit, the circuit breaker trips and interrupts the flow of electricity.

• It can be manually reset after tripping or may automatically reset once the fault is cleared.

• Circuit break...read more
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Q3. What is transformer? Answer:- ट्रांसफार्मर एक ऐसा विद्युत यंत्र है जो कि AC सप्लाई की फ्रीक्वेंसी को बिना बदले उसे कम या ज्यादा करने के लिए इस्तेमाल किया जाता है.
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Q4. What is the step up and step down transformer?
Ans. 
Step up and step down transformers are used to increase or decrease the voltage in electrical systems.
• Step up transformers increase the voltage from the input to the output.

• Step down transformers decrease the voltage from the input to the output.

• Step up transformers have more turns in the secondary coil than in the primary coil.

• Step down transformers have fewer turns in the secondary coil than in the primary coil.

• Step ...read more
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Hcf and lcm question

Q1. Hobby and work related
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Q2. Play crickete... Supervisor in contracte base iocl
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Filed work

Q1. Basic for interview
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Q1. Techical Round and HR round
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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
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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. Introduction of basic electricals
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Q2. How wind turbine opearates
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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. 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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