BARC Electrical Actual Interview Questions asked & Experience.

BARC Electrical Actual Interview Questions asked & Experience.
How you should prepare for BARC interview: Electrical Branch

The interview panel at BARC asks questions from the following subjects: network theory, electrical machines, power systems, & control systems. The panel will ask questions specifically related to these subjects, but they will go into great detail. This depth of questioning can focus on either theoretical or practical applications of the subject matter. Therefore, be prepared for unexpected and challenging questions. The panel is known to be very supportive and will offer hints to guide you. If you are able to articulate your ideas effectively and possess a strong understanding of the subject matter, then you have a good chance of succeeding. Below you will find the actual interview questions asked in BARC interview for the electrical branch. Here I am sharing the interview questions asked about electrical machines in the BARC interview.

1. Basic clarity of concepts.


2. Application of those concepts in solving practical engineering problems.


3. How well you approach a technical problem presented to you.

1. Have your basics cleared. There should not be any topic in those 4 papers that you have not understood completely.


2. Sometimes they may ask you to derive certain well-known formulas or expressions related to your subjects. so be prepared and practice them.


3. They may even give you some analytical problems and ask you to find the answer. Even if you do not get the answer, try to take a logical approach to it ,Do not get nervous.

Electrical Machines

Here is a list of some previously asked interview questions for electrical engineering.


1. What is the relationship between transformer size and flux density?


2. If the input it a transformer is square waveform, then draw its output voltage waveform.


3. Questions on the general working of transformers.


4. Torque speed characteristics of a 3-phase induction motor.


5. Effect of a constant V-to-F ratio in an induction machine.


6. What happens if V is kept constant and F is varied below and above rated values in a transformer and 3-phase induction motor?


7. Draw the family of torque-slip characteristics in each case.


8. Parallel operation of an induction motor and a synchronous motor.


9. Working principle of the transformer.


10. If some part of the core in a transformer is removed, what are the effects on ratings of the transformer?


11. What is leakage flux and they will show some 3 phase transformer circuits and ask in which combination leakage flux will be more and induced emf .


12. About the BH curve for the magnetic core of transformer and for air.


13. They ask for different combinations of turns (and also frequencies) on primary and secondary what is the output voltage.


14. They gave two induction machines with different slips and asked about input current, power factor and power output for the two machines.


15. What happens if a alternator with 52 Hz frequency is connected to infinite bus bar?


16. What happens if mechanical input is removed to a alternator which is on infinite bus bar. Why is the starting current of an induction machine so high?


17. Why is a starter is required for I.M and name the types of starting methods?


18. What happens to torque if voltage half of the rated voltage provided to induction motor?


19. Some questions about auto transformer starter and DOL starter?