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Electronics Communications Interview Questions
Questions Answers Views Company eMail

what is the maximum delay gnerated by 555timer and why?

2417

from 12v,100ma power supply how an i get 5v,1amp draw the power supply diagram

2374

from 5v,50ma how can i get 5v,1amp draw the power supply diagram

Infosys, Texas,

9 12573

please send previous years question papers of JuniorEngineer (ELectronics)in RRB.

2055

can we calculate the voltage level for microwave energy which is using for our mobile communication?

2882

Is it possible to calculate a voltage for microwave energy generating in oven? Is there any formula relating frequency and voltage and it should be independent of speed?

2351

What do you mean by EDGE and any link for possible interview questions on this topic?

4 8347

can you give me example of igbt drive circuit... i still not under stand how it can be design with certain equation using mathlab program...

2058

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

DRDO,

5 29630

tell me site from where i can download WREN N MARTIN GRAMMER BOOK...

5 16571

In Atomic structure, is there any chance of attracting the electrons sorrounded by the nucleus, if it is possible can u explain that concept?

1 3603

why the pic micro controller have three timers

HCL,

2 9383

In automation process timer based automation is best or not? any other possible methods are available

2192

what is IGBT & how its work & also it s used

Johnson Controls,

2 11587

sir i want syllabus for junior engineer §ion engineer.

DRDO, RRB,

2123


Post New Electronics Communications Questions

Un-Answered Questions { Electronics Communications }

how do i write program like one shown 1234567654321 123456 654321 12345 54321 1234 4321 123 321 12 21 1 1

15674


For the same order of doping, why does n-type semiconductor exhibit larger conductivity than p-type semiconductor?

1225


Tell me what is race around condition in a jk flipflop? How it can be avoided?

1120


Explain avalanche breakdown?

1215


Define hard-driving or over-driving?

1215


Explain how to design binary to gray code converter?

1020


What is meant by 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? What do you mean by an ideal voltage source? What do you mean by 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 briefly. What do you mean by half-duplex and full-duplex communication? Explain briefly. Which range of signals are used for terrestrial transmission? What is the 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? What do you mean by 3 dB cutoff frequency? Why is it 3 dB, not 1 dB?

2137


what are the need of satellites in telecommunication. if satellite no means how can we communicate with others?

1521


I want previous rrb enteranse exam papers in section engineer. please send that papers to my id rohit_nist@yahoo.co.in

2784


What logic function is obtained by adding an inverter to the output of an and gate?

1105


please send the latest sample question paper for the hal online test for electronics stream

3398


List the parameters that should be considered for ac and dc applications.

1628


If we use heat sinkble rechem make HT jointing kit for XLPE HT (6KV)termination at HT side of transformenr, Is it required to fill the HT termination with Epoxy compoud?

2094


How much losses in microwave Link?

2051


Why signalling link load should be less than 30% in telecommunication?

2232