Engineering Materials Gun metal contains 90% copper and 10% tin 70 - 78% copper and rest tin 85 - 92% copper and rest tin with little lead and nickel 70% copper and 30% zinc 90% copper and 10% tin 70 - 78% copper and rest tin 85 - 92% copper and rest tin with little lead and nickel 70% copper and 30% zinc ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which is the false statement about wrought iron? It has Ability of hold protective coating High ductility Uniform strength in all directions High resistance to rusting and corrosion Ability of hold protective coating High ductility Uniform strength in all directions High resistance to rusting and corrosion ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Foundry crucible is made of Graphite Mild steel German silver Lead Graphite Mild steel German silver Lead ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Perminvar alloy having constant permeability is an alloy of Iron, zinc and bismuth Nickel, copper and iron Copper, nickel and antimony Nickel, copper and zinc Iron, zinc and bismuth Nickel, copper and iron Copper, nickel and antimony Nickel, copper and zinc ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Tungsten in steel Gives ductility, toughness, tensile strength and anti-corrosion properties Improves cutting ability and reduces hardenability Improves wear resistance, cutting ability and toughness Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties Gives ductility, toughness, tensile strength and anti-corrosion properties Improves cutting ability and reduces hardenability 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