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DRDO Interview Questions
Questions Answers Views Company eMail

what is the function of external oscillator in 8051 microcontroller

 1 5243

IN AN OSCILLOSCOPE TWO COUPLING IS THERE, THAT IS AC & DC COUPLING, WHERE DO WE USE THESE COUPLINGS ?

 2 5611

how write a addtion of two single dimensional array using of pointer in c language?

 3 4569

What's the difference between looping 0s and 1s in K map?

 4676

How will you send and receive data to a micro-processor? (One method is I/O mapped I/O which is the other one?)

1 4506

What is D-FF? What is the basic difference between Latches and Flip flops? What is a multiplexer? How can you convert an SR Flip-flop to a JK Flip-flop? How can you convert an JK Flip-flop to a D Flip-flop? What is Race-around problem? How can you rectify it? Which semiconductor device is used as a voltage regulator and why? Explain an ideal voltage source? Explain zener breakdown and avalanche breakdown? What are the different types of filters? What is the need of filtering ideal response of filters and actual response of filters? What is sampling theorem? What is impulse response? Explain the advantages and disadvantages of FIR filters compared to IIR counterparts. What is CMRR? Explain half-duplex and full-duplex communication? Which range of signals is used for terrestrial transmission? Why is there need for modulation? Which type of modulation is used in TV transmission? Why we use vestigial side band (VSB-C3F) transmission for picture? When transmitting digital signals is it necessary to transmit some harmonics in addition to fundamental frequency? For asynchronous transmission, is it necessary to supply some synchronizing pulses additionally or to supply or to supply start and stop bit? BPFSK is more efficient than BFSK in presence of noise. Why? What is meant by pre-emphasis and de-emphasis? Explain 3 dB cutoff frequency? Why is it 3 dB, not 1 dB? Explain ASCII, EBCDIC?

 3 8891

Difference between shock and vibration isolator

 2 11529

I have attended Scientist Entry Test on 7th Sep. Hereby I am submitting paper for Electronics and Communication branch…….. Hope it helps future aspirants……..

 1757

WHAT ARE THE BELT HORMONICS IN AC MACHINE HOW TO REDUCE IT

 2 4158

WHAT TYPE OF QUESTION ASK FOR POST SENIOR TECHNICAL ASSISTANT IN DRDO

 7654

if u give d.c. supply to transformer primary then what happen.&why??????????????

 4 8012

Who was the father of Chander Gupt Morya?

 2 4980

If 5+3+2=151012, 5+4+5=202504, 7+2+5=143542 then 8+6+2= ?

 21 30205

what is fili flop ?

 3 6142

In simply words(not explain any formula )what do you mean by power factor.?

 5 6209

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DRDO Interview Questions


Un-Answered Questions

Explain what is the difference between mutexes and semaphores?

402

Why do we need oop?

656

Mention the differences between sql server and mysql.

503

Explain about the process which takes place to execute a stored routine?

432

end a movie clip using script in flash 5

1813




Differentiate between data base and data mart?

1649

Describe vpn?

602

How to create a new tablespace in oracle?

552

Can we perform dml in function?

590

Why we use surrogate key?

695

What is exact difference between step page and page new(both will create the pages)?

178

How to do callout integration? : salesforce integration

206

Can I add more than one .xaml pages in silverlight application?

1

Main configuration file and command used for NFS enabling exported directories and deamons?

502

Explain what happens in text format?

300