Materials and Construction A chemical change takes place when iron Melts Rusts Is heated None of these Melts Rusts Is heated None of these ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction A metallic alloy in general as compared to their pure metal components is Having higher melting point Having lower electrical conductivity Having lower hardness, reactivity and fusibility More corrosion resistant Having higher melting point Having lower electrical conductivity Having lower hardness, reactivity and fusibility More corrosion resistant ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Straight silicon steel (containing Si from 0.5 to 5%) because of their low hysterisis loss and high magnetic permeability are used for electrical appliances. Which of the following electrical appliances made of silicon steel contains maximum percentage of silicon (about 4%)? Armature of small motors/generators Generators and small motors High frequency transformers Induction motors Armature of small motors/generators Generators and small motors High frequency transformers Induction motors ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Tin in its pure form is used for making Foil for wrapping cheese Collapsible tubes for toilet preparations All of these Cans for food packing Foil for wrapping cheese Collapsible tubes for toilet preparations All of these Cans for food packing ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Molten phthalic anhydride is stored in a/an __________ vessel. Nickel clad steel Aluminium Glass lined steel Lead lined steel Nickel clad steel Aluminium Glass lined steel Lead lined steel ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Light weight metallic alloy used in aircraft industry is Aluminium Duralumin Phosphor bronze High silicon (14%) iron Aluminium Duralumin Phosphor bronze High silicon (14%) iron ANSWER DOWNLOAD EXAMIANS APP
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