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BEL Electronics Communications Interview Questions
Questions Answers Views Company eMail


3 11383

1.Explain 3D radar. 2.Method of mobile signal jamming. 3.Frequency hopping spread spectrum. 4.How does op-amp works in common mode? 5.Which flip flop is known as universal flip flop and why?


how different operators of mobile phones get connected? How the airtel network user get connected to other network users and talk to them?

3 3855

tel me the diffference between transistor and bios

3 5945

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


explain 4 maxwell equations???

1 4992

y do v use microprocessor for cpu's but not microcontrollers??? adv of mp over mc????


wat power transmitter we use in radar n explain its principle??


Difference between SONAR and RADAR? Can we use SONAR instead of RADAR? How can you 'swap' two numbers in two registers (using ALU), without using 3rd register?

1 6228

How will you connect a waveguide to a coax?


why does the current through inductor is constant, why current through inductor & voltage across capacitor is constant? can u explin clearly?

3 3992

how many states are there in digital watch?

3 3984

India is the power supply is 230v 50hz,so why the other countries 110v 60hz AC power supply why?

5 5419

I am working in a private software firm for past two years and now i want to switch to electronics company ... if they ask me ==>what I was doing for the past two years what would the appropriate answer to this ... please reply !


Explain the difference between JK Flip Flop and Master slave JK Flip flop.

1 3117

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Un-Answered Questions

what are system options for install base?


why /etc/shadow file do not have any permission ?


approx how long a simple website take time just for manual testing including report generation.


define material grades 15b25,10b21,scm-415,16mncr5 in detailwith their compositions


How do I charge bank charges on payments to clients


What binary value will be internally stored for NULL for the type S9(1) COMP 3 in mainframe


what is the procedure for scheduling conditional rendering?


What do you know about THP-1 cell line ?


mccb service sittings be done?


What is NGR . What is the purpose of 10 sec ,60 sec rating of NGR.


how to calculate load for a bungalow and 1column carry how much load if the size of column ,9"*15" .....or total structure load......


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?


what is csr? d form


Can i work 240 volt 1400 watts 1 ton ac with 24 volt battery..! How..?


whats the reason behind SF fault on siemens PLC.please explain in detail.


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