BEFORE GIVING ANY PSU INTERVIEW I SEARCHED A LOT FOR THE QUESTIONS ASKED BUT I ALWAYS GOT INSUFFICIENT QUESTIONS. SO THIS IS MY ATTEMPT TO BRING YOU PERSONALLY EXPERIENCED QUESTIONS. I ALWAYS UPDATE IT BY GATHERING INFORMATION FROM FRIENDS TOO.

SO DO COMMENT AND FOLLOW ME FOR MORE EXPERIENCES AND VARIOUS INFORMATION.

DRDO INTERVIEW (JRF)

Monday, December 24, 2018

⏩DRDO CFEES (Center for Fire, Explosive and Environment Safety), New Delhi.

Interview Date:12th June 2018.

 

     This was my first interview in DRDO. I attended this interview as a trial. Just to know what type of questions are going to be asked and to understand the depth of the questions. I observed that the panel was of 5 people all were around 40-45 age group. First of all, they asked me "where are you from ?" I told them that I'm from Maharashtra. They got astonished. Surprisingly asked me about the time required to travel. Then they moved toward technical questions.



   1. Do you know photocell?

Actually, I didn't know what exactly mean by photocell at that time. Even though I just tried to guess ...I told them that photocell is like a solar cell when light fall's on it. It gets charged.
  Suddenly one of the aged interviewers got angry and said, " don't tell anything like an illiterate person". Then himself explained that photocell is a device which can be used to measure the detonation time of an explosive. we, human, cannot test the detonation by actual presence.so such a device helps us.
  After the interview, it was my strategy to analyze the questions asked and search the answers from Google.
I found that photocell also called as LDR(light dependent resistor) or photoresistor. It allows the flow of current when light falls on it. Generally, LDR's are made up of selenium, cadmium.














2.What is the use of impedance matching?

I answered, "it is used to transfer maximum current to the load."

     3. Tell me what is maximum power transfer theorem?


This was a counter question for the previous answer. but I explained MPTT.
Now they asked my favorite subjects during the degree.
I told Electronic devices, Digital electronics, Control systems, Network theory.

      4.Nortans and Thevenin Theorem?


I explained thoroughly but they tried to confuse me.

      5.DTL, TTL Logic families?


Unfortunately and unconsciously I uttered it is not in the syllabus of GATE. They were shocked, looking at each other "it was there in degree syllabus or not?  !!"
I nodded "yes, it was but haven't studied it well".
I would like to suggest you, don't answer them if you don't know. Just agree that you don't know without justification.

     6. What are the advantages of negative feedback?


I couldn't answer it well though I know the answer well the pressure created by the previous incident stumbled words.....
Then they said thank you. Simply understand that it's time to leave.
I was the second last candidate and it was around 1:30 pm.


    

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