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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.
Seawater is boiled in a 5 liter kettle to produce drinking water. In class we solved the steady-state version of this problem. Here you are asked to consider the transient period
advantages and disadvantages of hot working
Desgin of furnce - combustion chamber: • Deside on type of furnace :need review of furnace types (grete,fluidized bed,puluerised coal or other. • Sectch of furnace design with
Q. Show Seismic Loads For Ground Supported Equipment? V = C s W is the governing equation for horizontal seismic base shear of ground supported equipment. C s = 1.2A v S/(RT
HOW TO GO ABOUT WRITING A TERM PAPER TITLED: APPLICATION OF TURBULENT FLOW IN MECHANICAL ENGINEERING.
The mass flow rate is 28kg/s in an axial flow gas turbine that develops 3.5MW. The stagnation conditions are 780KPa and 730 deg.C. at the entry. At the exit of the nozzle, the stat
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Q. Two coils with self inductances 1H and 4H have a mutual inductance of 1H. The RMS value of current flowing in the two coils is 4A and 1A respectively. Find the coupling factor
Compare solid shaft with the hollow: Compare solid shaft with the hollow shaft, by strength and their weight. Sol.: ( a ) Comparison by strength: Assume that both the s
Q. Explain working of Steam Sampling? Sample coolers shall be supplied by the Vendor. A common sample spillage trough shall also be provided by the Vendor, with a cover screen
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