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DRDO Interview Questions
Questions Answers Views Company eMail

what is the function of external oscillator in 8051 microcontroller

 1 5227

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

 2 5595

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

 3 4549

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

 4665

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 4489

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 8876

Difference between shock and vibration isolator

 2 11509

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

 1744

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

 2 4136

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

 7647

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

 4 7989

Who was the father of Chander Gupt Morya?

 2 4969

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

 21 30126

what is fili flop ?

 3 6125

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

 5 6180

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DRDO Interview Questions


Un-Answered Questions

TRIColor

1754

What causes breaker to spark?

220

How would you choose differential range?

692

What are accessors, mutators, @property?

464

What is TCP/IP in R?

75




what is the use of FR-4(flame retardant)in PCB design why dielectric material used in inner layer in PCB design technology??

1521

What is erythropoiesis?

308

Why do arrays have a 0 in it?

415

can a deareator be placed at any height with care that suction (NPSH) for feed pump is satisfied

1523

How can you use “$rootscope” in angularjs?

491

What is the number of network ids in a class c network?

218

What is Relational Calculus?

522

What is HBase Shell?

126

When should you use the “break” in python?

412

What is the difference between cassandra, hadoop big data, mongodb, couchdb?

242