Engineering Materials Addition of lead and bismuth to aluminium results in One of the best known age and precipitation hardening systems Improvement of corrosion resistance Improving machinability Improvement of casting characteristics One of the best known age and precipitation hardening systems Improvement of corrosion resistance Improving machinability Improvement of casting characteristics ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Combined carbon in iron makes the metal Hard and gives a coarse grained crystalline structure Hard and gives a fine grained crystalline structure Soft and gives coarse grained crystalline structure Soft and gives a fine grained crystalline structure Hard and gives a coarse grained crystalline structure Hard and gives a fine grained crystalline structure Soft and gives coarse grained crystalline structure Soft and gives a fine grained crystalline structure ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The addition of which of the following improves machining of copper? Vanadium Tin Sulphur Zinc Vanadium Tin Sulphur Zinc ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Pipes for bicycle frames are made of Hot rolled steel Cold rolled steel Forged steel Cast steel Hot rolled steel Cold rolled steel Forged steel Cast steel ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Steel contains Alloying elements like chromium, tungsten nickel and copper 50% or more iron 80% or more iron Elements like phosphorus, sulphur and silicon in varying quantities Alloying elements like chromium, tungsten nickel and copper 50% or more iron 80% or more iron Elements like phosphorus, sulphur and silicon in varying quantities ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to 100°C will Increase Decrease First increase and then decrease Remain same Increase Decrease First increase and then decrease Remain same ANSWER DOWNLOAD EXAMIANS APP
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