Engineering Materials Dow metal contains 90% magnesium and 9% aluminium with some copper 90% aluminium and 90% copper 92.5% aluminium and, 4% copper, 2% nickel and 1.5% Mg 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe 90% magnesium and 9% aluminium with some copper 90% aluminium and 90% copper 92.5% aluminium and, 4% copper, 2% nickel and 1.5% Mg 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The molecules in a solid move Back and forth like tiny pendulums In a random manner In a haphazard way In circular motion Back and forth like tiny pendulums In a random manner In a haphazard way In circular motion ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Following elements have face-centered cubic structure A iron (below 910°C and between 1400 to 1539°C), W All of these Mg, Zn, Ti, Zr, Br, Cd Gamma iron (910° to 1400°C), Cu, Ag, Au, Al, Ni, Pb, Pt A iron (below 910°C and between 1400 to 1539°C), W All of these Mg, Zn, Ti, Zr, Br, Cd Gamma iron (910° to 1400°C), Cu, Ag, Au, Al, Ni, Pb, Pt ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials When filing or machining cast iron makes our hands black, then it shows that ________ is present in cast iron. Cementite None of these Both A and B Free graphite Cementite None of these Both A and B Free graphite ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Free cutting steels Is used where rapid machining is the prime requirement Contain carbon in free from Can be cut freely Require minimum cutting force Is used where rapid machining is the prime requirement Contain carbon in free from Can be cut freely Require minimum cutting force ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Tungsten when added to steel __________ the critical temperature. Lowers None of these Does not effect Raises Lowers None of these Does not effect Raises ANSWER DOWNLOAD EXAMIANS APP
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