Engineering Materials Which of the following material has nearly zero coefficient of expansion? High speed steel Heat resisting steel Stainless steel Invar High speed steel Heat resisting steel Stainless steel Invar ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The hardness is the property of a material due to which it Can be rolled or hammered into thin sheets Breaks with little permanent distortion Can be drawn into wires Can cut another metal Can be rolled or hammered into thin sheets Breaks with little permanent distortion Can be drawn into wires Can cut another metal ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials In a hardening process, the hypo-eutectoid steel is Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air Heated below or closes to the lower critical temperature and then cooled slowly Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air Heated below or closes to the lower critical temperature and then cooled slowly Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The charge of the blast furnace consists of Calcined ore, coke and limestone all in equal parts Calcined ore (1 part), coke (8 parts) and limestone (4 parts) Calcined ore (8 parts), coke (4 parts) and limestone (1 part) Calcined ore (4 parts), coke (1 part) and limestone (8 parts) Calcined ore, coke and limestone all in equal parts Calcined ore (1 part), coke (8 parts) and limestone (4 parts) Calcined ore (8 parts), coke (4 parts) and limestone (1 part) Calcined ore (4 parts), coke (1 part) and limestone (8 parts) ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Nickel in steel 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 Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Permalloy is a Polymer None ferrous alloy Kind of stainless steel Nickel and iron alloy having high permeability Polymer None ferrous alloy Kind of stainless steel Nickel and iron alloy having high permeability ANSWER DOWNLOAD EXAMIANS APP
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