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Q. What do you mean by Thermosetting plastics?
This plastic undergoes a number of chemical changes on heating and cure to infusible and practically insoluble articles. The chemical change is not reversible thermosetting plastics do not soften on reheating and can not be reworked. They rather become harder due to completion of any left-over polymerization reaction. Eventually, at high temperatures, the useful properties of the plastic get destroyed. This is called degradation. The commonest thermosetting plastics are: alkyds, epoxides, polyesters, phenolics and urea.
Q. What are the Specific Issues with plant Layout? There are a large number of regulations and related material that impact the operating plant. API (American Petroleum Institu
Example: Order Quantity and Reorder Point: Daily demand for a particular product manufactured by ABC company is distributed normally with a mean of 30 and standard deviation o
Q. Positive Material Identification Testing? Any physical evaluation or a test of a material to confirm that the material which has been or will be placed into service is consi
(a) Describe that internal energy is property of the system. (b) one kg of air at 1 bar and 300k is compressed adiabatically till its pressure becomes 5 times the original press
Polygon law of forces
What is the clear difference between gravitational potential and gravitational potential energy ? Ans) A body A of mass m is placed in the gravitational field of a body B of mass
#question.what are process of annealing? .
Give differences between direct stress and bending stress. Direct tensile and compressive stress is set up because of load applied parallel to length of object, and direct shea
Determine about the extent of excavation The extent of excavation depends upon the construction problems like dewatering and uplift. In extreme cases anchoring of the box may b
The Radial Dimension Commands There are 2 main radial dimension commands, DIMDIAMETER & DIMRADIUS. Both commands result in similar looking dimension so AutoCAD automatically i
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