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

1 Answers   Mobilink,

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why video is AM but audio is FM modulated in TV?

3 Answers  

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When compared with other transducers measuring temperature, a four-lead platinum RTD 1. has better linearity over a wide operating range 2. has better accuracy and precision 3. has better stability at high temperature 4. is inexpensive Which of these are correct? Select one: a. 1,2 and 3 b. 2,3 and 4 c. 1,2 and 4 d. 1,3 and 4

1 Answers  

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What is the work of Bus cable, Power cable and Er cable in nokia flexi edge bts.

0 Answers   TATA,

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The change in a semi-conductor strain gauge, in resistance on application of strain is mainly due to the change in its

0 Answers   C DAC, CDAC,

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Which configuration among ce, cb, cc gives highest input impedance and no voltage gain?

0 Answers  

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on what basis hardware and software interrupts are defined

5 Answers  

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What is Cell Splitting?

0 Answers  

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Explain find conductivity, resistivity and resistance?

0 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 mean life of a carrier.

0 Answers  

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Draw the block diagram of a 128 line EPABX and explain its operation?

0 Answers  

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