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. 1.Difference between motor and generator 2.buck and boost converter
Ans. 
Motor converts electrical energy into mechanical energy while generator converts mechanical energy into electrical energy. Buck converter steps down voltage while boost converter steps up voltage.
• Motor converts electrical energy into mechanical energy while generator converts mechanical energy into electrical energy

• Motor has a rotor and a stator while generator has a stator and a rotor

• Buck converter steps down voltage ...read more
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Q1. What is the full form of DCRM test
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Q2. What's VCB in substation
Ans. 
VCB stands for Vacuum Circuit Breaker, a type of circuit breaker used in substations for switching and protecting electrical circuits.
• VCB uses vacuum as the arc quenching medium instead of oil or gas

• It is more efficient and requires less maintenance compared to traditional circuit breakers

• VCBs are commonly used in medium voltage applications in substations

• Example: ABB VD4 Vacuum Circuit Breaker
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