PowerGrid Interview Questions & Placement Procedure


PowerGrid Interview Questions & Placement Procedure
Company : Power Grid Corporation of India Limited
Selection Process : Direct Interview
Branch :Electrical and Electronics Engineering

About the Company

The Power Grid Corporation of India Limited, is an Indian state-owned electric utilities company headquartered in Gurgaon, India. POWERGRID transmits about 50% of the total power generated in India on its transmission network.
Company Website

Placement Procedure

Selection Process : Direct Interview
Interview was based on my area of interest. I was interested in Electrical Machines. Also they asked about major project, mini project and summer internship. Other questions were:
  • Two incandescent lamps of 40watt and 100watt of same voltage rating are connected in series. Which bulb will glow more?
  • What are the necessary conditions for connecting transformers in parallel?
  • What will happen if impedances of transformers mismatch?
  • What are IDMT relays?
  • How arc quenching takes place in SF6 CB?
  • Advantages of HVDC transmission?
  • What is skin effect?
  • What are the causes of skin effect?
  • Difference between Triac and Thyristor?
  • What are the transmission line compensation techniques?
  • Difference between auto transformer and two winding transformer?
Suggestions
 
Study the following subjects thoroughly
  • Machines, Switch gear and protection, Power systems

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