Anyone from ECE having interview on 5th Oct in Bangalore. ?
Plz help guys...
RF waves can penetrate buildings and walls but FM waves stopped or refelcted by buildings. RF wave ranges from 3 kHz to 300 GHz & FM wave range from 88 MHz to 108 MHz. So that means FM wave range also lies in RF wave range. Then why RF wave able to penetrate and FM not? Please give clarity on this friends.
How wiould you design a 'W' shaped bar fixed at one end and a force F is applied at the other?
I work in a public sector bank, had applied for noc but the prescribed date of submitting the noc has passed and still i dint got the noc. Can i be able to write the exam?
Anyone who has interview at Ahmedabad on 27 sep?
anyone has interview at ahmedabad on 22 sep?
Is Btech (Information Tech) eligible for Isro?
I had three interview expiriences with ISRO board. one technical assistant interview and two engineer interviews. As per my expirence prepare four subjects very well, dont leave any topic(choose your favourite subject eventhough if it is simple), this will help you if panel asks about favourite subjects.after this, cover all the subject basics.suppose if you dont know the answer dont leave it, atleast try to explain to show you have some idea on the topic.prepare project very well and allocate one day preparation for it, if possible write notes on it(especially if you are recently passed out). some times they may asks about current technologies like 3g,4g,bluetooth,ARM processors(this is to test are you following current topics or not). In interview dont blame or over argue with the panel members they have lot of practical expiriences. present your answers confidently. If you have any interview expirience in ISRO inform to panel during introduction and write in the bio-data forms also(prepare last time made mistakes, they may asks).
1ST INTERVIEW(technical assistant) ::
They asked me favourite subjects. I told networks,analog,digital,communications, then they asked why networks?
1)can you draw adder circuit?(drawn using op-amp,written equation also)
2)what is virtual ground concept?
3)can you draw adder circuit in digital?(half adder and full adder)
4) which logic family is fastest?
5) which logic family is highest logic swing?
6) what is figure of merit and it's units?
7) tell me TTL logic levels(logic zero voltage and logic one level)
8) can you explain logic levels with diagram?(Vil,Vol,Vih,Voh)
9)they given one networks circuit and asked will it works? if not try to make adjustments to work that circuit?
10) why are you using tri
state logic circuits & what is the adavantge of using it?
11) what is fan in and fan out of logic families?
12) which logic family has highest power disipation?
2nd INTERVIEW::
NO favourite subjecs direct attack
1)differences between micro controller and micro processor?
2)address lines and data lines count in 8086 processor
3) memory size of 8086 processor
4) can we use two processors on the same board
5) what is embedded systems and explain different types?
Next person asked about project.
6)explain your project?
7) can you run c program in labview(dll concept)
8)What is UPS?
9)ripple factor and efficiency of half wave and full wave rectifiers?
10) expain the operation of LED?
11) which material is using to produce blue,yellow and white colours?
12)what is flash counter?
13)explain the concept of sucessive approximation digital counter?
14) take one analog signal and draw the digital waveform after converting it into digital form using successive approximataion counter?
3rd INTERVIEW::
ASKED favourite subjects digital control networks analog
1)types of counters?
2)again adder circuits
3) what is grey and extended grey codes?
4) if you shift one bit from left to right what will happen?
5)convert 4.2v into binary form?
6)carry look ahead adder?
7) race around condition and how to eliminate it?
Then next controllers
8) what is stability and how can you tell wheather system is stable or not?
9)routh hurwitz conditions?
11) whatis type and orders of a sysyems?
11) if you give step signal to 2nd order system what will happen?
12)difference between controller and compensator?
13)explain all controllers with detailed explain(equation, advantages, disadavantage,which speicification will change)
14) explain wired OR and wired AND concepts?
The below questions are some important frequetly asking questions.
1) specifications of op-amp(i/p resistance,offset voltage,cmrr,how to reduce offset voltage,pssr etc)
2)advantge of laplace trasforms?
3) Instrumentation amplifier(very very important)
4) multivabrators and oscillators using op amp?
5) all analog and digital counters with diagrams, equations
6)all diode operations(led,pin,laser,tunnel,varactor etc)
7)differecnce between sensor and transducer?
8)what is nyquist criterion?
9)what is radar altimeter and how it works?
10) error correcting codes(reed solemon code)
11) microwave band ranges(l,s,c,x,ku)
12) matched fileter?
13) OQPSK modulation ,spread spectrum,msk modulation techniques?
14) what is link margin?
15)travelling wave tube?
16)root locus?
17) sampling theorems and PCM techniques?
18)envelop detector?
19)all logic families logic levels?
20)radar basics?
21) power amplifiers with circuit diagrams, wave forms and efficiences?
22)barkhausen criterion?
Guys ,,,help me Friends I was applied for electronics engineer sc post the exam will be going to be happened later then I has qualification on electrical engineering, so what will be my syllabus for the exam???
Please share some mechanical interview questions
Plz frnds help me...i am working in bsnl and applied for isro 2017 ...but in the advt it is written the NOC should reach by 12 oct but in bsnl they are saying it will take atleast 1 month for NOC ...what should i do frnds ...plz help me out😢😢
Any one pls tell me how to prepare for ISRO examination....which subjects are to be studied first?
Any one pls tell how to prepare for ISRO interview ?? (Computer Science)
Kindly help is electrical branch students can apply for electronics engineer post
while applying for isro, by mistake i filled "electronics and telecommunication" instead of "electronics and communication" in application form of isro. What should i do now? I already paid the fees online.
Any one please tell how to prepare for ISRO written?? (Computer Science)
Q repeat hote hai kya ISRO me?
any one from CS?
Any electrical branch students in the group,,, trying for electronics engineer post
Expected exam date?