Chemical Engineering Basics Cold cracking in the heat affected zone of a high strength steel weld can take place because of the Sufficient hydrogen present in the welding arc Martensite formation Relatively high sulphur content in the base metal Retained austenite Sufficient hydrogen present in the welding arc Martensite formation Relatively high sulphur content in the base metal Retained austenite ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Lime contains about 90% CaO. Percentage CaO present in limestone is about 50 80 25 70 50 80 25 70 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Carbon is present in the form of __________ in grey cast iron. Flakes Spheroids Cementite Nodular aggregates of graphite Flakes Spheroids Cementite Nodular aggregates of graphite ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Maraging steels derive their strength from the following mechanism: A fine, highly dislocated and strong martensite Fine dispersions of alloy carbides in a ferrite matrix Fine dispersions of intermetallics of Fe, Ni, Ti etc Fine dispersions of Fe₃ C nucleated on dislocations in austenite A fine, highly dislocated and strong martensite Fine dispersions of alloy carbides in a ferrite matrix Fine dispersions of intermetallics of Fe, Ni, Ti etc Fine dispersions of Fe₃ C nucleated on dislocations in austenite ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Ignition of fuel in a diesel engine is by Spark Hot compressed air Fuel injection None of these Spark Hot compressed air Fuel injection None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature strength are Cobalt, chromium & nickel Molybdenun, tungsten & chromium Cobalt, zirconium & molybdenum Cobalt, chromium & tungsten Cobalt, chromium & nickel Molybdenun, tungsten & chromium Cobalt, zirconium & molybdenum Cobalt, chromium & tungsten ANSWER DOWNLOAD EXAMIANS APP
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