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Friday, April 4, 2014

BHEL 2013 Electrical Interview Questions

2013 Interview Questions:

These are some of the interview questions asked in BHEL 2013 Electrical Interviews. Questions are collected from the Net and some of my friend's interviews.
Be prepare to answer some basic questions such as
  • Tell me about yourself
  • What do you know about BHEL
  • Why do you want to join BHEL
  • Final Year Project  Some basic questions from Bio-data.

Electrical Questions:

1. What are the different conditions for parallel operation of Transformers?
2. What are V and inverted V curves in Synchronous motor and their significance?
3. Explain electrical corona? and methods to reduce the electrical corona?
4. Explain about P, PI and PID controller? Their advantages and disadvantages?
5. What are the different braking methods used in dc motors?
6. What is water hammering phenomenon?
7. Advantages of DC motors over AC motors?
8. What is Load factor, Demand factor, Installed capacity, spinning reserve?
9. Which power plants can be used as a peak load plants. Reason?
10.What is String efficiency in insulators?
11. What is Transient stability and methods to improve transient stability?
12. What is single line diagram and the assumptions required?
13. What is Step Potential and Touch potential in substations?
14. What are different switching schemes employed in substations?
15. How Speed of DC shunt motor is controlled?
16. What is the difference between Microprocessor and Microcontroller?
17. What is SIL and its significance?
18. Realize Ex-OR using NAND gates?
19. What is Race around condition?
20. Why single phase induction motor is not self starting and methods to start single phase induction motor?

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