Engineering Materials Tungsten in steel Gives ductility, toughness, tensile strength and anti-corrosion properties Improves wear resistance, cutting ability and toughness Improves cutting ability and reduces hardenability 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 wear resistance, cutting ability and toughness 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 Which of the following display properties similar to that of steel? Blackheart cast iron None of these Whiteheart cast iron Both (A) and (B) Blackheart cast iron None of these Whiteheart cast iron Both (A) and (B) ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials A material is known as allotropic or polymorphic if it Has its atoms distributed in a random pattern Responds to heat treatment Exists in several crystal forms at different temperatures Has a fixed structure under all conditions Has its atoms distributed in a random pattern Responds to heat treatment Exists in several crystal forms at different temperatures Has a fixed structure under all conditions ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials A reversible change in the atomic structure of steel with corresponding change in the properties is known as Molecular change Physical change Solidus change Allotropic change Molecular change Physical change Solidus change Allotropic change ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The machinability of aluminium increases when _________ is added to aluminium. Magnesium Copper Lead and bismuth Silicon Magnesium Copper Lead and bismuth Silicon ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following element results in presence of free graphite in C.I.? Sulphur Manganese Carbon Silicon Sulphur Manganese Carbon Silicon ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS