Materials and Construction Silicon percentage in iron castings to have maximum hardness should be about 0.3 0.5 2.5 0.8 0.3 0.5 2.5 0.8 ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Atmospheric corrosion of metals result from their Fast hydration Fast oxidation Slow dehydration Slow oxidation Fast hydration Fast oxidation Slow dehydration Slow oxidation ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Copper has very low Tensile strength Ductility Thermal & electrical conductivity Malleability Tensile strength Ductility Thermal & electrical conductivity Malleability 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%)? High frequency transformers Armature of small motors/generators Generators and small motors Induction motors High frequency transformers Armature of small motors/generators Generators and small motors Induction motors ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Rubber lined vessels are corroded by the action of Sulphuric acid (95%) Chloroform Aqua regia All of these Sulphuric acid (95%) Chloroform Aqua regia All of these ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Mild steel is used for making Die block Drop forging Fish plates Channels Die block Drop forging Fish plates Channels ANSWER DOWNLOAD EXAMIANS APP
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