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Q. An interface circuit consisting of R 1 and R 2 is designed between the source and the load, as illustrated in Figure such that the load sees a Thevenin resistance of 50 betw
1. Find the Nyquist rate for the following signals: (a) x(t) = 5 sin 3000Πt cos 4000Πt (b) A binary channel with bit rate 36000 bps is available for PCM voice transmission.
Q. What do you mean by Companding? In order to lower the crest factor of a waveform, so as to produce better performance, a process known as companding is used. It works like a
Can you explain how electrochemical grinding is advantageous over conventional grinding? How metal is moved in electrochemical grinding? What is the basic principle of electroch
Q. D flip-flop - latch or delay element? The symbol for the clocked D flip-flop is shown in Figure (a), in which the two output terminals Q and ¯ Q behave just as in the SRFF,
Q. What are concentrators? Elucidate how it helps in connecting number of subscribers. Ans: In rural areas, subscribers are usually dispersed. It is both expensive and unn
Q. What are the Display Devices? Display devices can be categorized as on/off indicators, numeric, alphanumeric, or graphical displays. They may also be classified as active an
Explain the Sequential Circuits? The Logic circuits whose outputs, at any instant of time, depends not merely the present input but as well the past output called sequential ci
It is uneconomic to provide adequate equipment to carry all the traffic which could possibly be offered to a telecommunication system. In a telephone exchange it's theoretically po
Q. In a hundred-line exchange 24 two-motion selectors are used. Draw schematic you suggest for this exchange and illustrate its working. How many simultaneous calls can be made du
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