what kind of negative feedback is present in a noninverting op-amp.

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What is the use of excitation table in digital electronics?

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Explain what are the basic logic elements?

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why rs232 is used in uart when there are many rs devices like rs449 etc . what is the main advantage in using rs232

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SIR VERY GOOD MORNING I AM APPERING FOR RRB EXAM FOR SECTION ENGINEER I REQUEST U TO PLZ FORWORD THE PAPER PATTERN AND EVEN PREVIOUS QUESTION PAPER SIR. I THINK U WILL SURELY HELP ME OUT IN EXAM.

4 Answers   RRB,

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i want to know the syllabus for management trainee exam,vizag steel plant,2009

0 Answers   Vizag Steel,

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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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what is difference between voltage & current?

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can we calculate the voltage level for microwave energy which is using for our mobile communication?

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what is the difference between delegation and containership?

0 Answers   KIIT,

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what is the reason of RDI alarm in microwave link?

0 Answers   TATA,

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Why vestigial side band is used in tv signal transmission?

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