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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.
Hi there. I am stuck on a problem. I am working out the section of 2 beams for the floor of an elevator. Thus far the critical conditions are made up of a beam that is 1.8m long
String Vibration Fixed Ends In case of the vibrations of a string, both its ends at x = 0 and x = L may be permanently fixed; y (x = 0) = 0 , and y (x = L) = 0 at all t
Evaluate the acceleration of the three weights: A system of weight connected by the string passing over pulleys A and B is shown in figure given below. Find out acceleration
Define rpm
Application of Cost-Volume-Profit Relationships: Quality stores open for 10 hours a day. Company is considering decreasing the store hours through one hour. This shall resul
Rankine cycle with respect to P-V, T diagrams: The steam having high pressure is expanded to a low pressure within a reciprocating engine or a turbine. If expansion is idea
Prove the torsion equation T/J=τ/R=C. θ/L for the solid circular shaft. State the various assumptions used on above said equation.
W rite down the different assumptions in simple theory of bending. The assumptions which are made in theory of simple bending are stated below:
Q. What is IFD in project management? The P&IDs now reflect the next intermediate stage of development and incorporate any changes requested by the Customer during the IFA revi
Projection Welding This is a modified method of making single or multiple spot welds. Projection welds are made by providing an embossment or projection on one or both of
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