What are the advantages & disadvantages between analogue & digital watermarking?

1 Answers  

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what happens when a capacitor is connected in i)series ii)parallel to the circuit

2 Answers  

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What do you mean by half-duplex and full-duplex communication? Explain briefly.

9 Answers  

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please post me questions for technical interview in tata communications tranformations,

0 Answers  

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what is the syllabus of MAHAGENCO written exam held in NOV/DEC 2009

2 Answers   Electronics, MahaGenco,

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A thread has to access the address space of all other threads in the same process and can therefore mess up the stacks of other threads. Why is this not a protection problem? Could the same be allowed to occur for processes, e.g. one process writing data into the stack of other.

0 Answers   HCL,

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Can u please post some questions of MTNL junior telecom officer exam?

0 Answers   Lanco,

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why transformer does not work dc

2 Answers  

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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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Define mobility of a carrier. Show that the mobility constant of electron is larger than that of a hole.

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Is there any tradeoff between voice quality and bandwidth, how?

1 Answers   IIITM,

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I gave interviews for infosys and accenture in my college after which my college said I was selected in infosys. After some days I got a mail from accenture that we have dispatched the offer letter to ur college. I talked to my training officer and he is not ready to give me my letter. So how do i contact them to get my letter online ?

0 Answers   Infosys,

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