Explain GPRS architecture.

0 Answers   BSNL,

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how a log ratio amplifier works?

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how snuber circuit protect the thyrister

2 Answers  

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In the case of baseband signaling, the received waveforms are already in a pulse-like form. Why then, is a demodulator (receiving filter) needed to recover the pulse waveform?

0 Answers  

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how to calculate qty. of random rubble masonary in retaining wall?

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what are the variois ways to come out of the wait state?

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what is am transceiver.

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The magnitude of the gain or integrator transfer function using op-amp is A WR1Cf B -1/WR1Cf C -WR1Cf D 1/WR1Cf

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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 is commutation angle or overlap angle?

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What is SCADA ? What are its main components ? How it works ? When we need a SCADA & where ? Is there any similarities and comparison b/w PLC & SCADA ? What are its Pros & Cons ? What are the faults that occur in it most ?

2 Answers  

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which are the standards followed in high temperature Electronics?

0 Answers   General Motors GM, Secure Meters,

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