what is orthogonal code of 0

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On what topic questions are asked?

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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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what is hole current??

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what are the benefits of 4gb fibre channel?

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no. of interrupts of 8051 excluding reset.

10 Answers   CBIT, ONGC,

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types of modulation and their differences

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Explain digital circuits and the various components used in creating them?

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What is a transistor. Can u explain the basic operation of it??????

14 Answers   TCS,

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What are the losses that occur in a thyristor during working conditions?

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need previous placement test papers of infosys and soctronics

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What is mean by R, Y, B, Bk in wiring???

1 Answers  

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