ISRO interview questions electronics communications - 2017-2018 StudyChaCha

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  #1  
Old May 5th, 2012, 12:40 PM
rajiv kalita
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Default ISRO interview questions electronics communications

Hello sir, I have done ISRO recruitment exam for scientist engineering and now I am preparing for interview section so would you tell me which type question will be ask by HR related to Electronics and communication engineering subject?
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  #2  
Old May 5th, 2012, 06:30 PM
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Default Re: ISRO interview questions electronics communications

For your help here I am uploading the file for interview questions which are generally asked for Electronics and communication engineering .

What do you mean by 3 dB cutoff frequency? Why is it 3 dB, not 1 dB?
What is the need for modulation?
What is EDFA ?
What is meant by pre-emphasis and de-emphasis?
What is Race-around problem? How can you rectify it?
What is CMRR? Explain briefly.
Difference between FM and AM, which is preferred & its advantages.
For asynchronous transmission, is it necessary to supply some synchronizing pulses additionally or to supply or to supply start and stop bit?
Questions on signal processing techniques ?
What is VOIP ?
On what principle do Transformers work ?
BPFSK is more efficient than BFSK in presence of noise. Why?
What is ZigBee and its specifications ?
Questions on different coding techniques ?
What is latest satellite from ISOR ?
What is impulse response?
Why we use vestigial side band (VSB-C3F) transmission for picture?
What are the different types of filters?
What are different types of antennas ?
What is Moore's Law ?
What is Lenz law ?
What do you mean by half-duplex and full-duplex communication? Explain briefly.
Explain the advantages and disadvantages of FIR filters compared to IIR counterparts.
What is sampling theorem?
How can you convert an SR Flip-flop to a JK Flip-flop?
What is Transmission Frequency of Bluetooth, Wi-Fi and Wi-MAX ?
Why is Zener Diode always used in Reverse Bias condition ?
When transmitting digital signals is it necessary to transmit some harmonics in addition to fundamental frequency?
What do you mean by an ideal voltage source?
What is Yagi-Uda antenna ?
What is a multiplexer?
What is the basic difference between Latches and Flip flops?
Which type of modulation is used in TV transmission?
What is FPGA ?
What is meant by D-FF?
How many satellites comprise the GPS and expand it ?
What is difference between Piconet and Scatternet ?
What is the need of filtering ideal response of filters and actual response of filters?
What is RS in RS-232 ?
Which range of signals are used for terrestrial transmission?
What do you mean by ASCII, EBCDIC?
What is MIMO ?
What do you mean by zener breakdown and avalanche breakdown?
Which semiconductor device is used as a voltage regulator and why?
How can you convert an JK Flip-flop to a D Flip-flop?
What is difference between Microprocessor and Microcontroller ?
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  #3  
Old February 15th, 2014, 12:44 PM
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Default Re: ISRO interview questions electronics communications

Here I am giving you interview question for candidates of electronic and communication engineering for recruitment in Indian space research organization

ISRO interview questions :

In radar we may know how a CW radar works and what are its applications.

. In digital we know how to reduce a Boolean expression using K-map. But do you know difference between looping 1s and 0s in K-map?

Do you know there is a limitation in Kmap?

Do you know any other method to reduce the expressions? Is there any limitation for that?

In mechanical we have heard a lot about 100cc or 150 cc bikes. What actually cc here means?

Is there any relationship with that with performance if so how and why?

Is there any 100% efficient Carnot cycle? Why?

In electrical we have heard a lot about transmission loss why it is caused? Can we prevent it ?

In Computer you know methods of sorting? Which is the most efficient and why?

In Physics do you know what is the cause of hall effect?

Sampling theorem, aliasing effects, digital modulation (compare BPSK and BFSK), what is FFSK?, line coding (compare Manchester and NRZ scheme), turbo codes??, trellis coded modulation??, advantage of cyclic codes

Eqvt ckt of transmission line and explain all the primary and secondary constants?

- losses associated with transmission line

- antenna gain, isotropic antenna?, antenna applns at different freq

- microwave sources - klystron, magnetron etc.

Contact details :
ISRO
ISRO Rd, Amarjyothi Layout, Raj Mahal Vilas 2nd Stage, Sanjay Nagar, Bangalore, Karnataka 560094 ‎
080 2341 5275 ‎

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  #4  
Old October 24th, 2015, 05:38 PM
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Default Re: ISRO interview questions electronics communications

i t i electronics technician B interview papaer
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