Power Grid Corporation of India Substation Engineer Interview Questions and Answers for Experienced

Q1. Personal information,
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Q2. Current Job, Current CTC
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Q1. Current company working profile
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Q2. Electrical questions ,
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Q3. Power generation , Motors
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Q4. Wind turbine, sub station equipment
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Q5. Circuit breakers, CT, PT
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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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Basic electrical, technical relqted questions

Q1. Basic electrical, experience related questions
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Q1. About self introduction, n my past work experience details, and discussed about salary
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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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