The science and technology of deep refrigeration processing occurring at temperatures lower than about 150 k. is the field of cryogenics. The name cryogenics is evolved from Greek word ?kryos? meaning icy cold. Phenomena that occurs at cryogenic temperatures include liquefaction and solidification of ambient gases; loss of ductility and embrittlement of some structural materials such as carbon steel; increase in thermal conductivity to a maximum value, followed by further decrease in temperature. Cryogenics is the low temperature (150 K) refrig ....etc

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The science and technology of deep refrigeration processing occurring at temperatures lower than about 150 k. is the field of cryogenics. The name cryogenics is evolved from Greek word ?kryos? meaning icy cold. Phenomena that occurs at cryogenic temperatures include liquefaction and solidification of ambient gases; loss of ductility and embrittlement of some structural materials such as carbon steel; increase in thermal conductivity to a maximum value, followed by further decrease in temperature. Cryogenics is the low temperature (150 K) refrig ....etc

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CRYOGENICS AND ROCKET PROPULSIONS



INTRODUCTION

A rocket is a machine that develops thrust by the rapid expulsion of matter. The major components of a chemical rocket assembly are a rocket motor or engine, propellant consisting of fuel and an oxidizer, a frame to hold the components, control systems and a cargo such as a satellite. A rocket differs from other engines in that it carries its fuel and oxidizer internally, therefore it will burn ....etc

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1.Consumption of raw soybeans can be harmful to health because of the presence of following anti-nutritional factor:
(A)Phytic acid(B)Tannins
(C )Oxalates(D)Trypsin inhibitor

2.In a standard fruit jam preparation the content of total soluble solids should not be less than :
(A)68% W/W(B)45% WAV
(C )65% W/W(D)70% W/W

3.The safe level of irradiation for foods, which presents no toxicological hazard is :
(A)5.0 kGy(B)10.0 kGv
(C )7.0 kGy(D)25.0 kGy

4.Subjecting rice to higher degree of polishing is associated with ....etc

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i need ppt on cryogenics and its space applications. ....etc

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i m badly seeking for the cryo ppt
pls help ....etc

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advantages and disadvantages of cryogentics ....etc

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plz send me seminar presentation on this ....etc

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1. INTRODUCTION TO CRYOGENICS
Cryogenics is the study of how to get to low temperatures and of how materials behave when they get there. Besides the familiar temperature scales of Fahrenheit and Celsius (Centigrade), cryogenicists use other temperature scales, the Kelvin and Rankine temperature scale. Although the apparatus used for spacecraft is specialized, some of the general approaches are the same as used in everyday life. Cryogenics involves the study of low temperatures from about 100 Kelvin to ....etc

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