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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.
As a student engineer illustrate what design consideration you would like to account for parts manufactured by machining and forging. A circular bas of 500mm length is hinghed f
A motor coil can be modeled as a hollow copper cylinder with an outer diameter of 50 mm, an inner diameter of 40 mm, and a length of 60 mm. The motor stalls at time t ¼ 0 and, at t
Determine the maximum shear stress and angle of twist: A hollow circular shaft of 6 m length and inner & outer diameter ois equal to 80 mm and 100 mm is subjected to a torq
define the prandtl stress function
Selection of boiler?
FLUX FEEDING & RECOVERY SYSTEM The flux is fed by gravity from the flux delivery hopper mounted on the welding head through a tube into the welding zone. Flux feeding is normally
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Q. Explain about Burner Management System? The Vendor shall provide a stand alone Burner Management System that is NFPA approved. Provision shall be made for communication wit
Throttling Process: The expansion of gas through an orifice or partly opened valve is called as throttling. q 1 -2 = 0 and w 1 -2 = 0 Now The throt
Friction is Undesirable: A friction is undesirable at the time of ice skating or when the block is lifted or put down on the truck with the help of inclined plane. If friction
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