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What do you understand by DRAM and its refreshing?
Dynamic RAM (DRAM) is fundamentally the same as SRAM, but this retains data for only 2 or 4 ms on an internal capacitor. But after 2 or 4 ms, the contents of the DRAM should be fully rewritten (refreshed) since the capacitors that is store logic 1 or logic 0, lose their charges. The whole content of the memory is refreshed with 256 reads in a 2-to-4 ms interval. Also refreshing occurs throughout a write, a read or a particular refresh cycle.
Q. Practical properties of operational amplifiers? To achieve voltage gain and consequently power gain, the op amp must be biased by a dc source. The biasing network is compris
a. Explain the meaning of amplitude modulation? Show that the AM output having two sidebands and the carrier frequency. b. Illustrate that the equivalent parallel impedance of a
Q. How many 500-page books can be stored on a 2400-ft, 1600-BPI magnetic tape if a typewritten page contains about 2500 bytes?
Q. Transistor terminals in BJT ? BJTS have three terminals namely base terminal, emitter terminal and collector terminal .The emitter layer is a source of charge carriers and i
A 100kw,230v,dc shunt generator,with Ra=0.05,and Rf=57.5 has no load rotational loss(friction,wandage,core loss)of 1.8kw.compute a) The generator efficiency at full load.
what is cro ?
why biasing of bjt transistor is essential?
Q. Show the Octal Number System? Though this was once a popular number base, especially in the Digital Equipment Corporation PDP/8 and other old computer systems, it is rarely
Q Using a combination of Uni-selectors and two motion selectors, draw a diagram of thousand line exchange and illustrate its working. Ans: The diagram for such an exchange i
Determine the Dielectric constant of slab: An air capacitor contains two parallel plates 10 cm 2 in area and 0.5 cm apart. While a dielectric slab of area 10 cm2 and thicknes
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