Chemical Engineering Basics Maraging steels derive their strength from the following mechanism: Fine dispersions of intermetallics of Fe, Ni, Ti etc A fine, highly dislocated and strong martensite Fine dispersions of Fe₃ C nucleated on dislocations in austenite Fine dispersions of alloy carbides in a ferrite matrix Fine dispersions of intermetallics of Fe, Ni, Ti etc A fine, highly dislocated and strong martensite Fine dispersions of Fe₃ C nucleated on dislocations in austenite Fine dispersions of alloy carbides in a ferrite matrix ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics In radiative heat transfer, a grey surface is the one, which has Equal brightness in all directions Emissivity independent of wavelength Grey appearance to the eye Zero reflectivity Equal brightness in all directions Emissivity independent of wavelength Grey appearance to the eye Zero reflectivity ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics The heat treatment to which the steel wire containing > 0.25% carbon is subjected to is Bright annealing Full annealing Patenting None of these Bright annealing Full annealing Patenting None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Creep consideration is the most important in case of the Steam engine flywheel Cast iron pipes Cycle chains Blades of gas turbines Steam engine flywheel Cast iron pipes Cycle chains Blades of gas turbines ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics When the wet steam is throttled but still remains wet at the exit of the throttle valve, then its temperature & dryness fraction respectively Increases & increases Increases & decreases Decreases & decreases Decreases & increases Increases & increases Increases & decreases Decreases & decreases Decreases & increases ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics In extrusion of metals, which of the following statement is true ? Redundant work is a function of the die angle Relative motion between the billet surface and the container wall is always present Hollow ram is used for indirect extrusion Speed of the extruded material is same as that of ram speed Redundant work is a function of the die angle Relative motion between the billet surface and the container wall is always present Hollow ram is used for indirect extrusion Speed of the extruded material is same as that of ram speed ANSWER DOWNLOAD EXAMIANS APP
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