Engineering Materials Which of the following has highest specific strength of all structural materials? Magnesium alloys Titanium alloys Chromium alloys Magnetic steel alloys Magnesium alloys Titanium alloys Chromium alloys Magnetic steel alloys ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Tungsten when added to steel __________ the critical temperature. Lowers None of these Raises Does not effect Lowers None of these Raises Does not effect ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Chromium 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 unit cells Contain the smallest number of atoms which when taken together have all the properties of the crystals of the particular metal 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 All of these Contain the smallest number of atoms which when taken together have all the properties of the crystals of the particular metal 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 All of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Tensile strength of steel can be safely increased by Adding carbon up to 2.8% Adding carbon up to 0.83% Adding carbon up to 6.3% Adding small quantities of copper Adding carbon up to 2.8% Adding carbon up to 0.83% Adding carbon up to 6.3% Adding small quantities of copper ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Hardness of upper bainite (acicular structure) is about RC 48 RC 57 RC 65 RC 80 RC 48 RC 57 RC 65 RC 80 ANSWER DOWNLOAD EXAMIANS APP
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