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.

ISRO SCIENTIST INTERVIEW.

Friday, January 18, 2019


INTERVIEW EXPERIENCE AT ISRO (Indian Space Research Organisation ), New Delhi.

Interview Date: 2nd Jan 2017.




 An interview panel was of 10 senior scientists took my interview for roughly 25–30 minutes. I am giving the entire interview process here.

For BARC exam preparation and to practice interview questions click here.

   They didn't ask me about any favorite subject or favorite topic. They just started asking various questions.

 

1) What was your final year project? 

  

2)What are 3 practical uses of your project?


I answered it properly. 
Then they told me to draw the circuit diagram of the switch relay circuit used in my project.

  

3)Any 5 differences between an open loop system and closed loop   system.


After my answer, they put some cross questions regarding bandwidth and stability of both the systems.

  

4) Types of Modulation and their principle applications.


Then they started asking about CDMA, GSM and UMTS standards.
They told me to elaborate on the differences between TDMA, FDMA, and CDMA in a practical manner.
       I answered them properly as they are the most asked interview questions for ECE students and prepared them well. From here they jumped to the definition of Lossless channel, Random channel and Deterministic channel and told me to draw each on the whiteboard.

   

5)Can you tell us about Huffman coding basics and significance in data compression?

As I have created a YouTube video on data compression using Huffman coding I had no problem with that.

Another panel member asked me about LEO and MEO. I answered about their application ranges but I was unaware of their heights. He also asked, “Does the mass of satellite has any impact on its velocity or not”. I answered it with confidence.
      Then another member jumped into the power electronics and started asking about Triac, IGBT, Power Mosfet, SCR, SCS and Snubber circuits. I was confident only with SCR hence answered that and said “ Sorry Sir I don't know” for the rest ones.
Due to my weak response, they shifted their gears and asked me about the diamagnetism and their use in Maglev trains which I answered perfectly.


Then they asked the differences between PD, APD and PIN diode which I answered with ease.

At the end stage of Interview panel head started telling the silent panel members “ Thoda Thoda aap bhi pucho Sir, Bahut hua theory thoda sa practical pucho isse.

Then he asked the last question of my interview

 

6)Can you design the automatic dusk down traffic light? 


I said yes and designed the circuit of LDR based dusk down an automatic traffic signal. After coming out of the hall I realized the blunder that I forgot to put a comparator in the circuit diagram before LDR to compare the intensity levels.



           Unfortunately its not a success story. I was one among them who's dream of joining ISRO as a scientist remained dream again.


It's hard to share the failure story but I think my experience, statics, and my
mistakes could help others in their preparations.

0 comments:

Post a Comment

Please leave comment and suggestions for improvement of the blog....