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DRDO Interview Questions
Questions Answers Views Company eMail

what is the function of external oscillator in 8051 microcontroller

 1 5246

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

 2 5611

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

 3 4578

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

 4676

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 4509

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 8897

Difference between shock and vibration isolator

 2 11532

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

 1757

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

 2 4160

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

 7654

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

 4 8014

Who was the father of Chander Gupt Morya?

 2 4985

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

 21 30217

what is fili flop ?

 3 6149

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

 5 6210

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Un-Answered Questions

in u flatfile some of fact records are missed then u load the diminision records are not if u load diminsion records what about fact table records

1729

What are the topics in core java?

527

How to estimate the shuttering material requirement for a slab and beam and shear wall..? Please send thumbrule to estimate material required ( Plywood, Ms plates, runners, acrospans, jacks)

1732

What does the objective c program fundamentally comprise of?

1

If a method's return type is void, can you use a return keyword in the method?

536




i am trying to set up a recurring reversing journal in Oracle GL, my problem is i have income balance of £30k that i only want to show 1/12th in a period over 12 months. can any one help me set it up . i want to show P01-13 opening balance £30k less £27500 P02-13 reverse P01-13 journal P02-13 opening balance £30k less £25000 etc. or does anyone know of another way it can be done automatically every month.

1852

What is non statutory audit?

649

What is cygwin used for?

463

What is the wet bulb globe temperature (wbgt)?

635

What are scriptlets?

593

In what case you don't see plugin menu?

106

What is face less component ?

102

What are the different types of wf agents?

511

What is difference between c++ 11 and c++ 14?

570

Can Windows Service be created Using WPF?

138