Engineering Materials Which of the following material has nearly zero coefficient of expansion? High speed steel Stainless steel Heat resisting steel Invar High speed steel Stainless steel Heat resisting steel Invar ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Nickel in steel 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 Improves cutting ability and reduces hardenability ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The hardness of steel increases if it contains Austenite Martensite Pearlite Cementite Austenite Martensite Pearlite Cementite ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following metal shrinks most from molten state to solid state? Brass Cast iron Cast steel Admiralty metal Brass Cast iron Cast steel Admiralty metal ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The presence of sulphur in pig iron makes The casting unsound It easily machinable It brittle It hard The casting unsound It easily machinable It brittle It hard ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The machinability of steel is increased by Sulphur, graphite and aluminium Phosphorous, lead and sulphur Phosphorous and aluminium Silicon and sulphur Sulphur, graphite and aluminium Phosphorous, lead and sulphur Phosphorous and aluminium Silicon and sulphur ANSWER DOWNLOAD EXAMIANS APP
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