Materials and Construction Galvanising is generally done on Low carbon steel Stainless steel Cast iron Non-ferrous metals Low carbon steel Stainless steel Cast iron Non-ferrous metals ANSWER DOWNLOAD EXAMIANS APP
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 Manganese in steel affects its Ductility None of these Tensile strength Hardness Ductility None of these Tensile strength Hardness ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which one occupies the lowermost position in the electromotive series of metals? Alkali metals (K, Na, Li) Aluminium Noble metals (Ag, Pt, Au) Zinc Alkali metals (K, Na, Li) Aluminium Noble metals (Ag, Pt, Au) Zinc 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%)? Generators and small motors Induction motors Armature of small motors/generators High frequency transformers Generators and small motors Induction motors Armature of small motors/generators High frequency transformers ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Silico-manganese steels (containing 0.7% Mn, 0.5% C and 2% Si) Do not require heat treatment for any of its applications Do not have good resilience properties Is tempered at 850°C Are used for leaf and coiled springs Do not require heat treatment for any of its applications Do not have good resilience properties Is tempered at 850°C Are used for leaf and coiled springs ANSWER DOWNLOAD EXAMIANS APP
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