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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.
Rigid body and Momentum: Body : A body consists of a Number of particles, it has definite shape. Rigid body : A rigid body can be defined as the combination of a large
Write a MATLAB program to find the undamped natural frequencies and modes of an electric car treating it as a four degree of freedom system. Determine the undamped natural frequenc
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Define the Effect of Feed Increase in feed rate deteriorates surface finish. It is observed that a rate of feed in the range from0.12 to 0.15 mm per revolution has a negligible
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draw the projection of pentagonal pyramid have 30 mm edge and axis 50 mm long having base on hp and an edge of the box parallel to vp
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Find out the slope and deflection at the free end: Discover the slope and deflection at the free end of a cantilever shown in Figure. Take EI = 200 × 10 6 N-m 2 . Solutio
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