Engineering Materials Chromium in steel Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties Improves wear resistance, cutting ability and toughness Gives ductility, toughness, tensile strength and anti-corrosion properties Improves cutting ability and reduces hardenability Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties Improves wear resistance, cutting ability and toughness Gives ductility, toughness, tensile strength and anti-corrosion properties Improves cutting ability and reduces hardenability ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The lower critical point for all steels is 723°C 913°C 700°C 600°C 723°C 913°C 700°C 600°C ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The addition of which of the following improves machining of copper? Sulphur Zinc Tin Vanadium Sulphur Zinc Tin Vanadium ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The blade of a power saw is made of Malleable cast iron Stainless steel High speed steel Boron steel Malleable cast iron Stainless steel High speed steel Boron steel ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following impurity in cast iron promotes graphite nodule formation and increases the fluidity of the molten metal? Sulphur Silicon Phosphorus Manganese Sulphur Silicon Phosphorus Manganese ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Iron-carbon alloys containing carbon ________ 4.3% are known as hyper-eutectic cast irons. Less than Equal to None of these More than Less than Equal to None of these More than ANSWER DOWNLOAD EXAMIANS APP
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