Power Grid Corporation of India Apprentice Trainee Interview Questions and Answers

Q1. Just normal question related to education qualification
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Q2. There is no other questions
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Questions type of transformer and circuit related

Q1. How many voltage power running in your home .
Ans. 
The voltage power running in my home is typically 120 volts.
• Standard voltage in most homes is 120 volts

• Some appliances may require higher voltage, such as 240 volts for a dryer

• Voltage can vary depending on location and electrical system

• Voltage is measured in volts
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Q1. What are your salary expectations?
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Q2. Why should we hire you?
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Q3. Where do you see yourself in 5 years?
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Q4. What are your strengths and weaknesses?
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Q5. Tell me about yourself.
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Q1. Working principal of Generator,AC & DC Motor, Transformer,
Ans. 
Generators convert mechanical energy into electrical energy, while motors convert electrical energy into mechanical energy. Transformers transfer electrical energy from one circuit to another.
• Generators use Faraday's law of electromagnetic induction to produce electrical energy

• AC motors work on the principle of rotating magnetic fields

• DC motors use commutators to convert AC to DC and produce a constant magnetic field

• Tr...read more
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Q2. Function and uses of IGBT,SCR,BJT Inverter Rectifier Chopper
Ans. 
IGBT, SCR, BJT are electronic devices used in power electronics for various applications.
• IGBT (Insulated Gate Bipolar Transistor) is used as a switch in power electronics applications such as motor drives, inverters, and power supplies.

• SCR (Silicon Controlled Rectifier) is used for controlling high power AC circuits, such as in lighting control, motor control, and heating control.

• BJT (Bipolar Junction Transistor) is us...read more
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