ISRO Interview Questions-2

About ISRO

Indian Space Research Organization (ISRO) is really a great place to work. If you are really lucky enough you will get a job here. ISRO is among the six dominant space research organization in the world. ISRO's first satellite was Aryabhata which was launched in 1975. Starting from that day ISRO is gradually getting momentum in advanced space research. ISRO's reputation got increased after the successful Chandrayaan-1 mission in 2008 which was India's first mission to the moon. According to Chandrayan-2 mission a moon rover will be sent to moon which will move on moon's surface with wheels, collect soil and rock samples, do analysis on it and send the data to spacecraft.

Image Credit: ISRO

Another very exciting news is that after the moon mission ISRO is going to start mars mission very soon. In this mission a spacecraft will be launched in mars orbit which will study its atmosphere. This could be launched in Nov 2013.

ISRO offers the opportunity for the post of Scientists/Engineers 'SC' in the discipline of Electronics and Mechanical Engineering. Currently the pay band for Scientists/Engineers 'SC' is Rs. 15600-39100 with a grade pay of Rs. 5400/-. So at present the gross amount will be  Rs. 33,180/- per month. Besides this House Rent Allowance (HRA) and Transport Allowance (TA) will also be provided who are not availing housing and transport facilities. The employees will also get pension according to new pension scheme. Other facilities include medical facilities for self and dependents, subsidized canteen facilities, limited housing facilities for freshers and many more.

ISRO is a Govt. job. So you can enjoy your life as well as you will learn a lot of things from it. Once you qualify it, you will get a lot of reputation from your society, from you family, from your neighbors and friends. If you want to do research in your life especially about space then ISRO is a good choice. But as there are very less vacancies available, a huge competition will must be there in ISRO exam. You need to prepare accordingly.

After all if some body asks you, "What do you do ?". You will feel proud to say "I am a scientist in ISRO". So do a smart preparation, grab the exciting opportunities from ISRO and finally be a scientist in your life.  

Some Interview Questions 

Q) What do you mean by input bias current in op-amp ? How to mitigate this problem ?
Q) What is the need of pre-emphasis in communication system ?
Q) What is common mode rejection ratio ? How it is measured and what is its unit ?
Q) What is Q factor of a parallel RLC circuit ? What is the significance of Q factor ? 
Q) What is voltage standing wave ratio ? If VSWR=1 then what does it signifies ?
Q) What do you mean by dominant mode of waveguide ? What are the dominant modes of circular and rectangular waveguides ?
Q) Which type of waveguides do not allow TEM modes and why ?

ISRO Interview Questions-1

How to prepare: In interview they generally ask about your favorite subject. So think twice before replying them. They are going to ask questions from your favorite subject. If you are not able to answer even very simple questions from your favorite subject it may create a bad impression. So before going to interview think yourself which subject you personally like the most or about which topic you have more knowledge. 

Following questions are very very important for ISRO Interview. So prepare yourself accordingly.

Q) What is race around condition ? Why it occurs ? How it can be avoided ?

Q) What is Nyquist sampling theorem ? If it will not be satisfied for a communication system what will happen ?

Q) What is fan-out ? What is the mathematical formula to calculate fan-out ?

Q) Describe the process of amplitude modulation ? What is modulation depth ?
Q) What is tri-state logic inverter ? Explain with the help of truth table ?
Q) Draw the equivalent circuit of a microwave transmission line. What do you mean by characteristic impedance and what is its value for a loss less transmission line ?
Q) What do you mean by the terms LEO, GEO and MEO with respect to satellite communication ?
Q) What is Fourier transform ? Why and when it is needed ?
Q) What are the different types of techniques available for error detection and correction in digital communication ?
Q) How can you implement a full subtractor with the help of half subtractors ?