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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.
Classification of Cast Iron: CI having C in form of cementite is named as white cast iron. Microstructure of that CI consists of pearlite, cementite and ledeburite. Whether C
Force system: Defin e Non concurrent force system. Why we find the position of Resultant in Non concurrent force system? Sol.: In Equilibrium of concurrent force syste
Composite Materials While two various materials which neither react chemically nor dissolve in every other are combined together so they form a composite materials. Individual
Calculate total deflection -two close-coiled helical springs: Two close-coiled helical springs are compressed among two parallel plates by a load of 1000 N. The springs contai
how can we modified truss to make sure it can support 20% more forces than usual?
what phase description is
Compute the ratio of the torque: Compute the ratio of the torque transmitted by a hollow & a solid shaft of the similar material, length & weight. Solution d i = inte
Q. What is the procedure of hot working? A process is defined as hot working if it takes place when the workpiece is above the recrystallization temperature. Hot Working Ad
is it correct tosay tha the heat content of the system is 5 kv.
Gibson Ltd operates sportswear stores in Dublin and Cork and has set the following quarterly sales target for international and provlncial rugby shirts for 2013 per the attached sc
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