Answer / rohitash palsania

maximum

Answer / mubeen

purely resistive in nature

describe the functioning of parallel adder ? what are the adventages of parallel adder over series adder?

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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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Define what do you mean by donor and acceptor impurities?

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Explain how to increase the gain and directivity of an antenna?

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How the battery of a mobile phone is charged??? whether it is charged uniformly or charges fast initially and slowly later on during reaching its full charging value????

1 Answers  

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1.Explain 3D radar. 2.Method of mobile signal jamming. 3.Frequency hopping spread spectrum. 4.How does op-amp works in common mode? 5.Which flip flop is known as universal flip flop and why?

0 Answers   BEL,

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does capacitor requires ac or dc supply?Why?

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What is Virtual Handoff ?

2 Answers  

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Tell me why Up link Frequency is more than Down link frequency.?

1 Answers   Mobilink,

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Explain why fet is known as voltage control device?

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How many satellites are required to cover the earth?

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Can any one tell me what ll be the interview questions for fresher in lectronics.

1 Answers  

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