Why is zener diode used as a voltage regulator?

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explain 4 maxwell equations???

1 Answers   BEL,

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what questions are asked in this round for ece

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what is ALE?what is it's function?

4 Answers  

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Define knee voltage of a diode.

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SIR,i WANT SBH CLERK EXAM MODEL PAPER PLEASE SEND IT TO MY EMAIL asif520520@gmail.com ,,thanks a lot ....

4 Answers   State Bank of Hyderabad SBH,

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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 are the causes of failure of mosfet in an high frequency application?

2 Answers  

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in what condition transistor act as switch and amplifier?

1 Answers   Spiro Solutions,

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Do u any one having Idea on Indocen Electronics. That is in Mumbai. I got an offer from that. Is that company is good or not. I am little bit confused on it. Please provide me the information.

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What type of gating signal is used in single phase ac voltage controller with rl load?

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Explain why fet is known as voltage control device?

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