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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.
The resultant of four vertical forces is a couple moment 30 Nm acting counter clockwise. Three of the four forces are shown in fig given below. Evaluate the fourth force.
What are the points that should be kept in mind during forging design? Some of the points which must be followed while forging design are: > A radial flow of fibers or grain
The Contractor shall perform all work with the highest quality workmanship throughout to provide a neat, uniform appearance with no sharp edges exposed. Insulation shall not be
Determine the minimum critical Euler axial compression force, Pcr and the minimum critical Euler axial compression stress, cru, for the column below which is pinned at the top and
Advantages and disadvantages
isentropic flow
Evaluate elongation of bar of varying cross section: How you evaluate elongation of bar of varying cross section:? Sol.: Take bar made up of different lengths and which
Explain the uses of Pier and Well Foundations Well foundations are used to transmit large loads from piers of bridges and other marine structures. These are constructions carr
#q(b) Illustrate governing mechanism of Kaplan turbine.uestion..
Example of support reaction: A fixed crane of 1000Kg mass is to lift 2400Kg crates. It is held in place by pin at point A and a rocker at point B . the C . G . is located
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