Engineering Materials Which of the following impurity in cast iron makes it hard and brittle? Sulphur Manganese Silicon Phosphorus Sulphur Manganese Silicon Phosphorus ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Smelting is the process of Reducing the ore with carbon in the presence of a flux Removing the impurities like clay, sand etc. from the iron ore by washing with water All of these Expelling moisture, carbon dioxide, sulphur and arsenic from the iron ore by heating in shallow kilns Reducing the ore with carbon in the presence of a flux Removing the impurities like clay, sand etc. from the iron ore by washing with water All of these Expelling moisture, carbon dioxide, sulphur and arsenic from the iron ore by heating in shallow kilns ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The unit cells May be defined as the smallest parallelepiped which could be transposed in three coordinate directions to build up the space lattice Contain the smallest number of atoms which when taken together have all the properties of the crystals of the particular metal All of these Have the same orientation and their similar faces are parallel May be defined as the smallest parallelepiped which could be transposed in three coordinate directions to build up the space lattice Contain the smallest number of atoms which when taken together have all the properties of the crystals of the particular metal All of these Have the same orientation and their similar faces are parallel ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The stiffness is the ability of a material to resist Deformation under stress None of these Fracture due to high impact loads Externally applied forces with breakdown or yielding Deformation under stress None of these Fracture due to high impact loads Externally applied forces with breakdown or yielding ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Crystal structure of a material is, generally, examined by Naked eye Optical microscope Metallurgical microscope X-ray techniques Naked eye Optical microscope Metallurgical microscope X-ray techniques ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Addition of silicon to aluminium results in Improvement of casting characteristics Improving machinability Improvement of corrosion resistance One of the best known age and precipitation hardening systems Improvement of casting characteristics Improving machinability Improvement of corrosion resistance One of the best known age and precipitation hardening systems ANSWER DOWNLOAD EXAMIANS APP
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