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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.
Evaluate the resultant both in magnitude and direction of the four force acting on the body as shown in figure given below :
The Radius Dimension Command The Radius command is quite identical to the Diameter command except that the dimension measurements a radius rather than a dimension and the resul
applications of dynamically induced emf
the velocity of a particle moving along x axis is defined by v=kx^3-4x^2+6x where v is in m/s,x in m and k is a constant .if k=2 compute the acceleration when x=2m #Minimum 100 wor
Determine the minimum thickness required: A thin spherical shell of 2 m diameter is subjected to an internal pressure of 1.5 N/mm 2 . If the allowable tensile stress of the ma
what is Otto cycle?
velocity ratio is 3 .pinion has 40 teeth. what would be the gear no of teeth?
types of maintenance
Lean Mixture: It generally ranges from approximately 15 : 1 to 17 : 1. By the use of this fuel, engine runs for higher economy.
Determine the stresses in the shell: A thin spherical shell of 1.5 m diameter & 8 mm thickness is filled having a liquid at an internal pressure of 1.5 N/mm 2 . Determine the
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