Engineering Materials The unit cells All of these Contain the smallest number of atoms which when taken together have all the properties of the crystals of the particular metal May be defined as the smallest parallelepiped which could be transposed in three coordinate directions to build up the space lattice Have the same orientation and their similar faces are parallel All of these Contain the smallest number of atoms which when taken together have all the properties of the crystals of the particular metal May be defined as the smallest parallelepiped which could be transposed in three coordinate directions to build up the space lattice Have the same orientation and their similar faces are parallel ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The hardness of steel primarily depends on Percentage of carbon Shape of carbides and their distribution in iron Percentage of alloying elements Heat treatment employed Percentage of carbon Shape of carbides and their distribution in iron Percentage of alloying elements Heat treatment employed ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The molecules in a solid move Back and forth like tiny pendulums In a haphazard way In a random manner In circular motion Back and forth like tiny pendulums In a haphazard way In a random manner In circular motion 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 In which of the following cases, consideration of creep is important Cast iron pipes Flywheel of steam engine Gas turbine blades Cycle chains Cast iron pipes Flywheel of steam engine Gas turbine blades Cycle chains ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Points of arrest for iron correspond to Stages at which properties do not change with increase in temperature Stages at which allotropic forms change Stages at which further heating does not increase temperature for some time There is nothing like points of arrest Stages at which properties do not change with increase in temperature Stages at which allotropic forms change Stages at which further heating does not increase temperature for some time There is nothing like points of arrest ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS