Explain how does a signal differ from a wave?

0 Answers  

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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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How is the keycode calculated while interfacing a keyboard with a microprocessor?

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Explain why is the diffusion technique of formation of resistor most widely used?

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sample & previous year papers of sta & je (electronics 0

0 Answers   DMRC, Infosys,

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How to programme PIC microcontroller.

1 Answers  

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What is the type of current used by GSM Telecom Equipment?

3 Answers   Zain Group,

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How the current is reduced to zero in a photodiode?

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What the diffrence between distortion,interferance,noise&error

1 Answers   ABC,

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For high frequency applications will you prefer mosfet or igbt? Why?

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In a 2 stage RC coupled amplifier, the emitter resistance of 1st stage consists of 2 resistances (Re and Re')in series and the bypass capacitor is connected across only one of them(bigger resistance). Why?

0 Answers  

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WHAR IS DIFFERENCE BETWEEN NMOS AND PMOS?

7 Answers  

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