Power Grid Corporation of India Electrical Training Engineer Interview Questions, Process, and Tips

Q1. They will ask for your previous job profile and basic of electrical. Not much more theoretical, major part is practical
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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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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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Q1. Basic electrical engineering about the power production and components details
Ans. Transformers, generator,motors, control device, thyristor, igbt, inverter, converter, switching device,pcb , transmission line , sub station equipment, the question is under these major ly.
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Q2. Components principal and working procedure
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Q3. Power generation equipment characteristics and uses
Ans. 
Power generation equipment includes generators, turbines, and transformers for producing electricity.
• Generators convert mechanical energy into electrical energy

• Turbines use steam, water, or wind to rotate a shaft connected to a generator

• Transformers increase or decrease voltage for efficient transmission and distribution

• Examples: gas turbines, hydroelectric generators, step-up transformers
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Q4. Formula for power and transformer capacity/amp
Ans. 
Power formula: P = V x I, Transformer capacity/amp formula: Capacity = V x I, where V is voltage and I is current.
• Power formula: P = V x I (P = power, V = voltage, I = current)

• Transformer capacity formula: Capacity = V x I (Capacity = transformer capacity, V = voltage, I = current)
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Q1. Previous employment, salary, work location
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Q1. What is transformers is function
Ans. 
Transformers are electrical devices that transfer electrical energy between two or more circuits through electromagnetic induction.
• Transformers are used to step up or step down voltage levels in electrical power transmission and distribution systems.

• They consist of two or more coils of wire, known as windings, that are wound around a core made of magnetic material.

• The primary winding is connected to the input voltage s...read more
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Q2. Transformer function is voltage steps up and step down
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