Materials and Construction In cold working of metal as compared to its hot working Ductility and impact strength improves Appreciable strain hardening is produced Cracks and blow holes are eliminated Yield stress, hardness and fatigue strength is not at all affected Ductility and impact strength improves Appreciable strain hardening is produced Cracks and blow holes are eliminated Yield stress, hardness and fatigue strength is not at all affected ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction H₂SO₄ (< 50% concentration) is corrosive to Aluminium, mild steel, stainless steel, concrete & tin Glass, graphite, porcelain & stoneware Copper, cast iron & high silicon iron (14% Si) Rubber (butyl and hard), silicone rubber & teflon Aluminium, mild steel, stainless steel, concrete & tin Glass, graphite, porcelain & stoneware Copper, cast iron & high silicon iron (14% Si) Rubber (butyl and hard), silicone rubber & teflon ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which of the following is the most elastic material? Steel Rubber Glass Plastic Steel Rubber Glass Plastic ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Chilled iron castings are Highly wear resistant Easily machinable Soft on surface None of these Highly wear resistant Easily machinable Soft on surface None of these ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Galvanising (i.e., zinc coating) of steel sheets is done to Prevent its rusting by contact with corrosive atmosphere Protect the base metal by cathodic protection Both A & B Neither A nor B Prevent its rusting by contact with corrosive atmosphere Protect the base metal by cathodic protection Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Carbon tetrachloride can be stored in a storage vessel made of High silicon iron (14% Si) Stainless steel All of these Tin High silicon iron (14% Si) Stainless steel All of these Tin ANSWER DOWNLOAD EXAMIANS APP
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