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 Answers   DRDO, Electronics,

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May want to know about OSI model 7 Layer 1 2 3 Layers of the most

1 Answers   Infosys,

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Which modulation we use in case of GPRS?

1 Answers   JAZ, NSN,

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What is circuit switching?

0 Answers  

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Why do we use distinct polarisation (UL-H:DL-V) while uplinking and downlinking rather than same (UL-H:DL-H)?

0 Answers  

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What are Basic difference between Nokia's Ultra & Flexi BTS.

2 Answers   NSN,

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tell me about accenture

0 Answers  

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for an insulating material,dielectric strength and dielectric loss should be respectively

1 Answers  

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if UT=4v & V LT=-2v the hysteresis voltage is equal to....?

0 Answers   Infosys,

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What are the operation of igbt?

0 Answers  

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What are the main purposes for which a cc amplifier may be used.

0 Answers  

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How much losses in microwave Link?

0 Answers  

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