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Q. Describe Natural and Synthetic Sand?
Natural sand: A natural sand is the on which is available from natural deposits. Only assistive and water need to be added to it to make it satisfactory for moulding. The clay content of most natural sands is slightly higher than the desired so that new sand can be continuously added to the used sand to replenish that which is lost.
Synthetic sand: A synthetic sand is prepared by mixing a relatively clay free and having a specified type of clay binder as well as water and other additives. All are mixed in the foundry. This sand has the advantage that sand grains of specified composition and properties can be prepared on the basis of the metal being cast.
Define Properties of System For defining any type of system particular parameters are required. Properties are those observable characteristics of the system, which can be util
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describe equivalence of kelvin planck and clausious statement
An open topped tank with a base area of 1m2 contains a layer of water 0:5m deep below an oil layer 1m deep. If the densities of water and oil are 1000kg=m3 and 850kg=m3 respectivel
Q. Define Pattern draft or taper? It is also termed as "draw". It is the taper placed on the pattern surface that are parallel to the direction in which the pattern is withdraw
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