Engineering Materials Iron-carbon alloys containing carbon ________ 4.3% are known as hyper-eutectic cast irons. Less than Equal to None of these More than Less than Equal to None of these More than ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Taps dies and drills contain carbon Above 2.2% Below 0.5% Above 1% Below 1% Above 2.2% Below 0.5% Above 1% Below 1% ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials In malleable iron, carbon is present in the form of Flakes Nodular aggregates of graphite Cementite Free carbon Flakes Nodular aggregates of graphite Cementite Free carbon ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Y-alloy contains 3.5 to 4.5% copper, 1.2 to 1.7% manganese, 1.8 to 2.3% nickel, 0.6% each of silicon, magnesium and iron, and rest aluminium 4 to 4.5% magnesium, 3 to 4% copper and rest aluminium 5 to 6% tin, 2 to 3% copper and rest aluminium 3.5 to 4.5% copper, 0.4 to 0.7% magnesium, 0.4 to 0.7% manganese and rest aluminium 3.5 to 4.5% copper, 1.2 to 1.7% manganese, 1.8 to 2.3% nickel, 0.6% each of silicon, magnesium and iron, and rest aluminium 4 to 4.5% magnesium, 3 to 4% copper and rest aluminium 5 to 6% tin, 2 to 3% copper and rest aluminium 3.5 to 4.5% copper, 0.4 to 0.7% magnesium, 0.4 to 0.7% manganese and rest aluminium ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The ability of a material to resist softening at high temperature is known as Fatigue Hot tempering Creep Hot hardness Fatigue Hot tempering Creep Hot hardness ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Vanadium in high speed steels Forms very hard carbides and thus increases wear resistance Promotes decarburisation Provides high hot hardness Promotes retention of austenite Forms very hard carbides and thus increases wear resistance Promotes decarburisation Provides high hot hardness Promotes retention of austenite ANSWER DOWNLOAD EXAMIANS APP
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