Engineering Materials When low carbon steel is heated up to upper critical temperature There is no change in grain size The grain size first increases and then decreases very rapidly The average grain size is a minimum The grain size increases very rapidly There is no change in grain size The grain size first increases and then decreases very rapidly The average grain size is a minimum The grain size increases very rapidly ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The machinability of aluminium increases when _________ is added to aluminium. Silicon Lead and bismuth Copper Magnesium Silicon Lead and bismuth Copper Magnesium ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Chromium in steel Improves cutting ability and reduces hardenability Gives ductility, toughness, tensile strength and anti-corrosion properties Improves wear resistance, cutting ability and toughness Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties Improves cutting ability and reduces hardenability Gives ductility, toughness, tensile strength and anti-corrosion properties Improves wear resistance, cutting ability and toughness Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The presence of hydrogen in steel causes Reduced neutron absorption cross-section Corrosion resistance Improved Weldability Embrittlement Reduced neutron absorption cross-section Corrosion resistance Improved Weldability Embrittlement ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is Invar Duralumin Hastelloy Silver metal Invar Duralumin Hastelloy Silver metal ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials An engineer's hammer is made of Forged steel High carbon steel Mild steel Cast iron Forged steel High carbon steel Mild steel Cast iron ANSWER DOWNLOAD EXAMIANS APP
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