Engineering Materials Free carbon in iron makes the metal Hard and gives a coarse grained crystalline structure Soft and gives a coarse grained crystalline structure Soft and gives a fine grained crystalline structure Hard and gives a fine grained crystalline structure Hard and gives a coarse grained crystalline structure Soft and gives a coarse grained crystalline structure Soft and gives a fine grained crystalline structure Hard and gives a fine grained crystalline structure ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which is the false statement about wrought iron? It has Ability of hold protective coating Uniform strength in all directions High ductility High resistance to rusting and corrosion Ability of hold protective coating Uniform strength in all directions High ductility High resistance to rusting and corrosion ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Tungsten in steel Improves cutting ability and reduces hardenability Gives ductility, toughness, tensile strength and anti-corrosion properties Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties Improves wear resistance, cutting ability and toughness Improves cutting ability and reduces hardenability Gives ductility, toughness, tensile strength and anti-corrosion properties Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties Improves wear resistance, cutting ability and toughness ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Free cutting steels Can be cut freely Require minimum cutting force Is used where rapid machining is the prime requirement Contain carbon in free from Can be cut freely Require minimum cutting force Is used where rapid machining is the prime requirement Contain carbon in free from ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Chromium when added to steel _________ the tensile strength. Increases None of these Decreases Does not effect Increases None of these Decreases Does not effect ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The silicon steel is widely used for Motor car crankshafts Generators and transformers in the form of laminated cores Connecting rods Cutting tools Motor car crankshafts Generators and transformers in the form of laminated cores Connecting rods Cutting tools ANSWER DOWNLOAD EXAMIANS APP
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