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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.
Q. What is Air Intakes? Air is drawn from the atmosphere for a variety of process and equipment uses, including: • Combustion air (fired heaters, boilers, gas turbines, int
in a closed cycle steam enters the turbine at a temperature of 400oc and a pressure of 4000kpa and is condensed at 10kpa
Are a Moment of Inertia Moment of force about a point is product of the force ( F ) and perpendicular distance ( d ) between point and line of action of that is F.d. This mome
Degre e of Super Heat: It is difference between the temperature of superheated steam and saturation temperature resultant to the given pressure. So, the degree of superhea
Ask question #MiThe steam that leaves the super-heater is expanded from 130bar at 535°C to 25.2bar at 310°C in a high pressure turbine. The steam from the exit of the HP turbine is
Heat generated uniformly in Stainless steel plate having k=20 W/m. 0 C. The thickness of the plate is 1cm and the heat generation rate is 500 MW/m 3 . If the two sides of the plate
Q. Define the project scope? The Design Basis Memorandum defines the project scope. This includes basic design concepts and the basis and philosophies upon which the project s
Advantages of welding process Welding results in a good saving of material and reduced labour content of production. Low manufacturing costs. Dependability of the me
RESISTANCE WELDING PROCESSES The following five are the main types of resistance welding: 1. Spot welding 2. Seam welding 3. Projection welding 4. Upset butt we
(a) Can you explain limitations of Euler's theory (b) Derive a mathematical expression to determine the crippling load of a column with on end fixed and other end hinged (c)
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