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Semi-conducting materials
1) Semi-conducting are the materials whose valence electrons are bounded somewhat loosely to their atom.
2) They needs energy less than dielectrics and more than good conductors to take away an electron from the parent atom.
3)They have:
(i) An empty conduction band
(ii) Almost filled valence band
(iii) Very narrow energy gap (of about 1eV) separating the two bands.
Calculate ?G of Eqs?IX-1 and IX-2 for the case of n-octane and plot against r over the range r=5 to 3ooA and for the two cases of x=2 and x=250.Assume 20? IX-1:?G=-n?µ+4pr2? IX-2:?
bernaulli''s theorm related numericals
write merits and demerits of free radical mechanism
One cubic metre of wet soil weighs 19.80 kN. If the exact gravity of soil particles is 2.70 and water content is 11%, Determine the void ratio, dry density and degree of saturat
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why hard ness of bore well water is less than sea water? justify.
Materials used for DC applications are: Iron and low-carbon steels (maximum carbon 0.05 %) • Iron-Nickel alloys (Permalloy) • Iron-Cobalt alloy (Permendur)
a. Describe the problems of flooding and channelling in packed tower b. Describe the construction and working of sieve tray, bubble cap tray and counter flow tray c. Describe
Proximity Printing The proximity exposure method is same to contact printing except that a small gap, 10 to 25 microns wide, is maintained among the wafer and the mask during e
A gas-phase exothermic reaction is approved out in a multi-tube reactor with the catalyst in 1-inch. Tubes and boiling water in the jacket. The feed temperature and the jacket temp
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