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DRDO Interview Questions

Questions Answers Views Company eMail

what is the function of external oscillator in 8051 microcontroller

1 5969

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

2 6527

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

3 5672

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

5076

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 5188

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 10200

Difference between shock and vibration isolator

2 12597

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

2186

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

2 4979

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

8034

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

4 9243

Who was the father of Chander Gupt Morya?

2 6284

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

21 34899

what is fili flop ?

3 7201

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

5 7616

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Un-Answered Questions

Which mysql function is used to concatenate string?

1403

Tell me what does 'indemnity' term means? : insurance sales

552

What are the four selection methods when choosing data from a data file?

1234

What is the benefit of hibernate tools eclipse plugin?

316

How to get execution path reports on query statements?

931

What is the purpose of callback function as an argument of setstate()?

395

What is the iterative deepening depth-first search algorithm?

957

How do you change preferences in excel?

585

What are the other services provided by the bank?

1002

What are swing components in java?

872

what is isotype switching?

397

What is the purpose of relationship validity period/date?

981

How do you avoid cyclic imports without resorting to imports in functions?

788

How do you achieve runtime polymorphism?

999

What is the Difference between public sector and private sector banks?

1069