Answer / Suresh Kumar Singh

Power electronics has numerous applications in daily life, such as LED lighting, electric vehicles, solar power systems, adjustable speed drives for appliances and motors, power supplies for computers and mobile devices, and electrical power transmission and distribution.

Can a transistor be obtained by connecting tow semiconductor diodes back-to-back?

1 Answers  

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What is the use of scr?

4 Answers  

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proff of ERLANG B formula???

1 Answers  

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what is the difference between electronics and electricals?

3 Answers  

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Why π-filters are not suitable for varying loads?

1 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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What Are The Advantages Of Spread Spectrum?

1 Answers   Ericsson,

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i will be attending the HAL MANAGEMENT TRAINEE(TECHNICAL ) exam ,please i want previous years question papers of HAL in e&c.

1 Answers  

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For how much time F-1 vissa is valid?

1 Answers  

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What is different between EPABX and PBX

1 Answers   Annai College,

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What is monolithic ic?

1 Answers  

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two independent random variables x and y are uniformly distributed in the interval [-1,1].the probability that max[x,y] is less than 1/2 is a) 3/4 b)9/16 c)1/4 d)2/3

3 Answers   GATE, Goodrich,

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