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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 rotation) Derive the equation for the shape of the surface zsurf(rsurf) for a rigid-body rotation of water at angular speed (rad/sec). Follow this process: 1) S
Simple problem on direct stress and Bending stress
Q. Steam Generator Piping? Control valves shall be Fisher or Purchaser-approved equal. All valves shall be detailed by size, rating, make, model number, and materials Two
A rectangular plate has two holes of dimensions shown and is released from the position shown. The plate is hinged about a horizontal axis and can rotate in the vertical plane. An
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what is the reason that rails are made in I-section form and not in the form of rectangular section.
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a) Illustrate with neat and clean diagram the measurement of brake power by prony brake Dynamiter OR Belt transmission type Dynamiter. b) A torsion dynamometer is fixed to a pro
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