Materials and Construction Silico-manganese steels (containing 0.7% Mn, 0.5% C and 2% Si) Are used for leaf and coiled springs Do not have good resilience properties Is tempered at 850°C Do not require heat treatment for any of its applications Are used for leaf and coiled springs Do not have good resilience properties Is tempered at 850°C Do not require heat treatment for any of its applications ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Hot working of lead is carried out at 373° K 75° C 150° C Room temperature 373° K 75° C 150° C Room temperature ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction __________ is a donor impurity for semi-conductors. Boron Antimony None of these Gallium Boron Antimony None of these Gallium ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction A magnetic material becomes __________ above the Curie temperature. Diamagnetic Ferromagnetic None of these Paramagnetic Diamagnetic Ferromagnetic None of these Paramagnetic ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction A metallic alloy in general as compared to their pure metal components is Having lower hardness, reactivity and fusibility Having lower electrical conductivity Having higher melting point More corrosion resistant Having lower hardness, reactivity and fusibility Having lower electrical conductivity Having higher melting point More corrosion resistant ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Presence of nickel in steel improves its Corrosion resistance Cutting ability All of these Wear resistance Corrosion resistance Cutting ability All of these Wear resistance ANSWER DOWNLOAD EXAMIANS APP
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