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DRDO Electronics Communications Interview Questions
Questions Answers Views Company eMail

How can we measure the Refractive Index of a 2 m long optical fiber?

1 2834

Why do we use FM for sound and AM for video in TV transmisssion?

5 26105

sir i want syllabus for junior engineer §ion engineer.

1248

I'would like to know the type of questios asked for STA (senior technical assistant)interview in DRDO.whats the nature of the interview? whether theres HR and Technical interview?

2 7783

What is the maximum range of a general Radar

9 14160





what is the dwdm

7 13938

what do you mean by junk yard,neo,meo,leo in satellite communications

1170

why we use the fuse

5 5748

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

2 4701

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

4178

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 3838

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 7489

what is fili flop ?

3 4762

What is "Aging effect" in B.J.T. ? please mail the answer at my ID, which is- kuldeeptiwarit@gmail.com

1 4369

introduce your self

1 3333

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How we create border using images by css3?

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When do you think a developer should use sql server-based cursors?

129


How to report calorific values of fuel?

177


Mention the differences between thin clients and thick clients.

1


A rock anchor 3 1/2” in diameter is placed in rock. The which has an allowable shear strength of 1200 psi. Determine the required anchorage length to safely carry a 80 ton load using a 2.0:1 F.S

920






how does ruby on rails use the model view controller (mvc) framework?

169


What are the causes of steam turbine failure?

1256


Explain about unique identifier data type in sql server?

149


Is there a way to refresh browser using selenium?

166


Which are the molecules that make possible active transport through membranes?

163


What are different types of reports? : salesforce reports and dashboards

3


What is php dependency injection?

111


how we decide the require size is this for a known current at fuu load?

1000


How many tags are defined in xhtml 1.0?

145


Tell me are objects passed by value or by reference?

18