Techincal Interview Questions - ELECTRONICS

ELECTRONICS QUESTIONS

  • · 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 do you mean by ASCII, EBCDIC?

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