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DRDO Interview Questions
Questions Answers Views Company eMail

what is the function of external oscillator in 8051 microcontroller

 1 5259

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

 2 5621

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

 3 4620

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

 4682

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 4524

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 8927

Difference between shock and vibration isolator

 2 11554

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

 1766

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

 2 4182

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

 7662

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

 4 8043

Who was the father of Chander Gupt Morya?

 2 5002

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

 21 30327

what is fili flop ?

 3 6168

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

 5 6228

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DRDO Interview Questions


Un-Answered Questions

What is the range of the short type?

587

What happens when you issue a delete command in hbase?

125

How to find 3rd element from end in a linked list in one pass?

464

what is the use of void main() in C++ language?

641

How to execute cql commands in neo4j?

1




What is a document in sap? : fi- general ledger accounting

637

How to calculate(Thumb rule) the consumption of steel per cubic meter for different concrete members. 

2859

What is the namespace that is used for WPF?

127

What are the four types of fonts?

325

Dfine the density of plastic?

664

Given a spherical surface, write bump-mapping procedure to generate the bumpy surface of an orange.

2035

What is purpose of find feature?

614

how many types of thyristor are? shortly define them with purpose, application & working principle?

1437

What is a performance monitor?

558

Explain can the validation be done in the server side? Or this can be done only in the client side?

509