Interview

1). BARC Interview

Here are are some of the questions asked to me during interview. I couldn’t put all questions as most of the questions were from analysis of given question only. But here is list of some of questions so as to get idea what kind of questions they ask. Questions were very basics. Panel members are so friendly that you actually enjoy there. Even people who seemed to be in worried state of mind and was nervous before interview told after coming from interview that interview was a fun and we enjoyed a lot. So, you don’t need to worry at all. Even questions were not too difficult. They just want to check your approach and most importantly practical knowledge.
They asked me to write 5 subjects and I wrote in sequence as follow:

Network Theory

Analog Circuit

Signal and system
Semiconductor Physics
Digital electronics
Though I wanted to put control system as my first priority but kind of practical questions they asked from other candidates forced me to drop this subject from favourite list. So, I suggest if you ever go for barc, either be fully prepared about practical application of control system or just don’t mention this subject. This was the only subject whose questions as told by other students are the toughest to handle in the interview. After this, digital was the second subject whose questions were of standard type. Other subject’s questions were so basics. Analog circuit is their favourite. Even the students who didn’t mention that subject, they also got some questions from analog circuit.
You don’t need to prepare at all for barc interview. All you need to stay calm and good in basics concepts and little practical use. You may not get selected there but you’re certainly going to have best experience there.
Good luck. Hope this experience will help you in future.

2). BEL Interview

3). ISRO Interview

Some of the questions for ISRO
1). Why white Gaussian Noise is called so? Why it is white? Why it is Gaussian?
2). Name a device which is MW device. (Tell device not a complete instrument like klystron). You must be able to explain how it generate MW.
3). Waveguides are which filters?
4). What is the ideal cut off for a waveguide
5). Basic difference between transmission lines and waveguide
6). Why 50 ohn as generalised impedance for an antenna
7). What is amplifier? Does it mean that signal gets energised from the circuit. What do you actually mean by Gain.(there point is from where this extra energy came. Must be able to see this as dc to AC. But on the same note, they may ask about DC to DC in differential amplifier
8). Some of the questions from EM Waves
Like TEM, TE, TM
9). What is the power if Hmax.
What is E there.
What if you halved the H.

1.tell only the names of network theorem
2. draw RL network. If unit step input is given then draw responses across R and L.
3. What is poynting theorem. write its equation.
4. what are multibirators. types?
5. what is skin depth.
6. address data lines of 8085 are multiplexed or not? which,higher order or lower order?
7. draw memory and IO interfacing ckt of 8085.
8.Draw PISO config of shift register.
9.Draw mod 2 counter. does its total delay depend on hold time?
10. what is boot strapping. draw its ckt diagram.
11. draw ckt diagram of voltage doubler.