why diodes are not operated in the breakdown region in rectifiers?

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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?

0 Answers   MAHINDRA,

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i want RRB chennai section engineer model papers &previous years papers including GK, ARITHEMETIC, REASONING, GENERAL ENGLISH IN THE YEAR 2005,2006,2007, 2008.

1 Answers  

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what is the procedure of a call? MS to MS STD. i want to know about the questions of telecom. plz send me on my mail id. friends also can send me ....... my mail id is suneel.ec31@gmail.com

0 Answers   Lucent,

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why u choose ece

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What is the main differnce between the SCADA and HMI also what is DCS?

0 Answers   Maestro,

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Explain the difference between JK Flip Flop and Master slave JK Flip flop.

1 Answers   BEL,

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Explain the importance and effect of if in radio receiver?

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will anyone pls tell me which is the best institue for oracle certification and approx fee for that in banglore....

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Explain the working of stepping motors.

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the pic micro controller have internal oscillator but why we use external oscillator

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For a type a chopper (first quadrant), express the following variables as a function of vs, r and duty cycle
in case the load is resistive average output voltage and current?

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