Casting - Casting objective questions and answers


1. Semi-centrifugal casting.......


   A.Is used to ensure purity and density at extremities of a casting

   B.Is used to cast symmetrical objects

   C.Is used to obtain high density and pure casting

   D.Uses heavy cast iron mould to act as chill

   E.Is not used for any purpose


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A.Is used to ensure purity and density at extremities of a casting

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2. Sprue in casting refers to.......


   A.Gate

   B.Runner

   C.Riser

   D.Vertical passage


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D.Vertical passage

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3. In slush casting process.........


   A.Molten metal is fed into the cavity in metallic mould by gravity

   B.Metal is poured into die cavity,and after a predeterminded time the mould is inverted to permit a part of metal still in molten state to flow out of cavity

   C.Cavity is filled with a precalculated quantity of metal and a core or plunger is inserted to force the metal into cavity

   D.Metal is forced into mould under high pressure


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B.Metal is poured into die cavity,and after a predeterminded time the mould is inverted to permit a part of metal still in molten state to flow out of cavity

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4. In carthias process......


   A.Molten metal is fed into the cavity in metallic mould by gravity

   B.Metal is poured into die cavity,and after a predeterminded time the mould is inverted to permit a part of metal still in molten state to flow out of cavity

   C.Cavity is filled with a precalculated quantity of metal and a core or plunger is inserted to force the metal into cavity

   D.Metal is forced into mould under high pressure


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C.Cavity is filled with a precalculated quantity of metal and a core or plunger is inserted to force the metal into cavity

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5. In slush casting.......


   A.Consumable patterns are used

   B.Plunger is used to force molten metal to fill up cavities

   C.Vaccum is applied to facilitate complete filling of casting

   D.When a solid shell of sufficient thickness has formed, remaining liquid is poured out

   E.Mercury is used for filling the master mould at normal temperature


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D.When a solid shell of sufficient thickness has formed, remaining liquid is poured out

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