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DRDO Interview Questions

Questions Answers Views Company eMail

what is the function of external oscillator in 8051 microcontroller

1 6086

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

2 6678

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

3 5828

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

5121

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 5287

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 10452

Difference between shock and vibration isolator

2 12784

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

2236

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

2 5107

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

8089

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

4 9414

Who was the father of Chander Gupt Morya?

2 6459

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

21 35692

what is fili flop ?

3 7373

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

5 7842

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Un-Answered Questions

Describe the gac in the .net framework.

1032

Why SQL Agent is used?

1158

Is there any framework in j2me that supports for all three HTc,iphone,Nokia phones.

2304

What will be the maximum size of an extent of a segment if the tablepac's default storage values are specified as (initial 8K next 16k minextent 4 pctincrease 100).Explain.

1903

How do u determine,what to be tested?

2091

Can you please explain the difference between primary keys and foreign keys?

1124

Explain what are components of report studio?

1110

How can i display output voltage of my Power supply(DC) on the seven segment display ?? which IC is used?

2054

Check if duplicates exist in an array of N which has range 1 to N.

977

What is the difference between the servername directive and serveralias?

1045

What are the sub modules in sap financial accounting (fi) ?

1177

What are the problems faced by java programmers who don't use layout managers?

991

How can one back up the data of ms outlook?

How do you pause a recording in powerpoint?

371

What does windows error reporting service do?

913