Engineering Materials In malleable iron, carbon is present in the form of Free carbon Nodular aggregates of graphite Flakes Cementite Free carbon Nodular aggregates of graphite Flakes Cementite ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Quenching is not necessary when hardening is done by Any one of these Case hardening Nitriding Flame hardening Any one of these Case hardening Nitriding Flame hardening ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Nickel in steel 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 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 ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Combined carbon in iron makes the metal Soft and gives a fine grained crystalline structure Soft and gives coarse grained crystalline structure Hard and gives a fine grained crystalline structure Hard and gives a coarse grained crystalline structure Soft and gives a fine grained crystalline structure Soft and gives coarse grained crystalline structure Hard and gives a fine grained crystalline structure Hard and gives a coarse grained crystalline structure ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following impurity in cast iron makes it hard and brittle? Manganese Sulphur Phosphorus Silicon Manganese Sulphur Phosphorus Silicon ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The surface hardness of the following order is achieved by nitriding operation 1000 to 1100 VPN 250 VPN 1500 VPN 600 VPN 1000 to 1100 VPN 250 VPN 1500 VPN 600 VPN ANSWER DOWNLOAD EXAMIANS APP
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