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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.
Direct Current ( DC ) : The direct current flows through a wire in one direction and it remains same over time. The current from battery is always direct current. Direc
A pressure vessel is to be treated to generate compressive residual stresses on it inner surface. This involves increasing the pressure until taking 75% of the wall thickness goe
Disadvantages of two stroke engine: The following are some of the disadvantages of two stroke engine when compared with four stroke engine: 1. As firing takes place in ever
Q. What is Clad plate and overlay welding? Strip back cladding on clad plate a minimum of 5 mm (3/16") from the edges of weld preparation before welding on the backing plate.
hiw can i fix the maximum temp of the aluminium
example with its properties
Slip-On Flanges Slip-on flanges are limited to use under the following conditions: ASME/ANSI B16.5 standard forged flanges for design pressures and coincident temperatures n
Ordinate Dimensions Ordinate dimensions are not really a dimensions at all in that they did not indicate a measurement aur dimensions. Rather they annotate known co-ordinate po
a) Illustrate principal of magneto hydro dynamic system (MHD) with diagram? b) a thermal power plant has two 60 MW units each running for 8000hrs and one 30MW unit running for 2
Stress-strain carves for ductile materials: A material is said to be ductile in nature, if it elongates before fracture. One this type of material is mild steel. Shape of stre
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