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DRDO Interview Questions

Questions Answers Views Company eMail

what is the function of external oscillator in 8051 microcontroller

1 6145

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

2 6806

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

3 5920

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

5171

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 5334

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 10579

Difference between shock and vibration isolator

2 12888

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

2271

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

2 5174

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

8119

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

4 9551

Who was the father of Chander Gupt Morya?

2 6598

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

21 36130

what is fili flop ?

3 7490

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

5 8012

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Un-Answered Questions

How co>operating system integrates with legacy codes?

1241

Mention some ipad and iphone testing tools and their usability.

1063

What is hibernate dtd?

382

What is segment address in 8086?

1056

y do v use single anteena in radar any other reason except cost???

2001

What does iunknown interface mean?

828

What qualities do you feel are required for a Bank Officer?

1139

Define MorphX?

245

What is coding?

1162

What are two different version of jquery library? : jquery mobile

835

Is linq faster than sql?

128

can we define multi-dimensional arrays in rpg ?

1752

What's the access scope of protected access specifier?

1098

Should I run malwarebytes with windows defender?

1045

What is python best for?

899