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DRDO Interview Questions
Questions Answers Views Company eMail

what is the function of external oscillator in 8051 microcontroller

 1 5264

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

 2 5629

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

 3 4639

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

 4684

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 4528

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 8934

Difference between shock and vibration isolator

 2 11560

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

 1772

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

 7666

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

 4 8047

Who was the father of Chander Gupt Morya?

 2 5006

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

 21 30383

what is fili flop ?

 3 6174

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

 5 6240

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DRDO Interview Questions


Un-Answered Questions

Difference between overriding and overloading in java?

585

At what factor resistance r of a conductor depends?

647

What is a schema example?

458

How does zener phenomenon differ from avalanche breakdown?

703

What database are supported by Hive?

411




any body can you help me what is the script to automate an comand promt

1981

How to write test cases for the following scenario: The system shall limit the search result display to 200 records. Do we need to write test data for it. How do we create a test data for it.

1874

What is a view in drupal 8?

86

Explain the importance of pseudomonas?

1726

Explain why screensaver is required in windows?

452

Is array synchronized in java?

557

what are the common errors that occured while programming in AS/400?

1117

How do I open an xml document?

447

What is the difference between applications and applets?

601

What condition do we use in Cognos when multiple path exits to reach the fact table.(i.e in BOXI we use CONTEXT when multiple path exit)

1676