Techincal Interview Questions - ELECTRONICS

Radhika Deshpande · 2011-07-10T21:57:28+00:00

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?

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?